Compare commits
11 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
 Nikhil Handigol
|
d8137a9219 | ||
|
Nikhil Handigol
|
891ea4854d | ||
|
Nikhil Handigol
|
2e0e2d97ec | ||
|
Nikhil Handigol
|
71b3128122 | ||
|
Nikhil Handigol
|
5ca1fb7e0f | ||
|
Nikhil Handigol
|
18a0b7e4ac | ||
|
Nikhil Handigol
|
e27673aeec | ||
|
Nikhil Handigol
|
035d4d20fe | ||
|
Nikhil Handigol
|
550ee2469e | ||
|
Nikhil Handigol
|
d8d9035242 | ||
|
Nikhil Handigol
|
f1aca0d9a6 |
@@ -1 +0,0 @@
|
||||
*.py diff=python
|
||||
+2
-8
@@ -1,14 +1,8 @@
|
||||
mnexec
|
||||
*.pyc
|
||||
*~
|
||||
*.1
|
||||
*.xcodeproj
|
||||
*.xcworkspace
|
||||
\#*\#
|
||||
mininet.egg-info
|
||||
build
|
||||
dist
|
||||
doc/html
|
||||
doc/latex
|
||||
trunk
|
||||
build/*
|
||||
dist/*
|
||||
|
||||
|
||||
@@ -41,19 +41,16 @@ load-plugins=
|
||||
# can either give multiple identifier separated by comma (,) or put this option
|
||||
# multiple time (only on the command line, not in the configuration file where
|
||||
# it should appear only once).
|
||||
disable=pointless-except, invalid-name, super-init-not-called, fixme, star-args,
|
||||
too-many-instance-attributes, too-few-public-methods, too-many-arguments,
|
||||
too-many-locals, too-many-public-methods, duplicate-code, bad-whitespace,
|
||||
locally-disabled
|
||||
disable=W0704,C0103,W0231,E1102,W0511,W0142,R0902,R0903,R0904,R0913,R0914,R0801,I0011
|
||||
|
||||
|
||||
[REPORTS]
|
||||
|
||||
# Set the output format. Available formats are text, parseable, colorized, msvs
|
||||
# (visual studio) and html
|
||||
output-format=colorized
|
||||
msg-template='{path}:{line}: [{msg_id}({symbol}), {obj}] {msg}'
|
||||
|
||||
# Include message's id in output
|
||||
# Include message's id in outpu
|
||||
include-ids=yes
|
||||
|
||||
# Put messages in a separate file for each module / package specified on the
|
||||
@@ -194,7 +191,7 @@ additional-builtins=
|
||||
ignore-iface-methods=isImplementedBy,deferred,extends,names,namesAndDescriptions,queryDescriptionFor,getBases,getDescriptionFor,getDoc,getName,getTaggedValue,getTaggedValueTags,isEqualOrExtendedBy,setTaggedValue,isImplementedByInstancesOf,adaptWith,is_implemented_by
|
||||
|
||||
# List of method names used to declare (i.e. assign) instance attributes.
|
||||
defining-attr-methods=__init__,__new__,setUp,build
|
||||
defining-attr-methods=__init__,__new__,setUp
|
||||
|
||||
|
||||
# checks for sign of poor/misdesign:
|
||||
@@ -267,8 +264,7 @@ int-import-graph=
|
||||
max-line-length=80
|
||||
|
||||
# Maximum number of lines in a module
|
||||
# XXX 1500 -> 4000 for miniedit.py
|
||||
max-module-lines=4000
|
||||
max-module-lines=1500
|
||||
|
||||
# String used as indentation unit. This is usually " " (4 spaces) or "\t" (1
|
||||
# tab).
|
||||
|
||||
@@ -1,52 +0,0 @@
|
||||
Mininet Contributors
|
||||
|
||||
Mininet is an open source project and we gratefully acknowledge
|
||||
the many contributions to the project! If you have contributed
|
||||
code into the project and are not on this list, please let us know
|
||||
or send a pull request.
|
||||
|
||||
Contributors include:
|
||||
|
||||
Mininet Core Team (and alumni)
|
||||
|
||||
Bob Lantz
|
||||
Brandon Heller
|
||||
Nikhil Handigol
|
||||
Vimal Jeyakumar
|
||||
Brian O'Connor
|
||||
Cody Burkard
|
||||
|
||||
Additional Mininet Contributors
|
||||
|
||||
Tomasz Buchert
|
||||
Gustavo Pantuza Coelho Pinto
|
||||
Fernando Cappi
|
||||
Ryan Cox
|
||||
Shaun Crampton
|
||||
David Erickson
|
||||
Glen Gibb
|
||||
Andrew Ferguson
|
||||
Eder Leao Fernandes
|
||||
Gregory Gee
|
||||
Jon Hall
|
||||
Roan Huang
|
||||
Vitaly Ivanov
|
||||
Babis Kaidos
|
||||
Rich Lane
|
||||
Rémy Léone
|
||||
Zi Shen Lim
|
||||
David Mahler
|
||||
Murphy McCauley
|
||||
José Pedro Oliveira
|
||||
James Page
|
||||
Angad Singh
|
||||
Piyush Srivastava
|
||||
Ed Swierk
|
||||
Darshan Thaker
|
||||
Andreas Wundsam
|
||||
Isaku Yamahata
|
||||
Baohua Yang
|
||||
|
||||
Thanks also to everyone who has submitted issues and pull
|
||||
requests on github, and to our friendly mininet-discuss
|
||||
mailing list!
|
||||
@@ -1,179 +1,273 @@
|
||||
|
||||
Mininet Installation/Configuration Notes
|
||||
----------------------------------------
|
||||
|
||||
Mininet 2.2.1
|
||||
Mininet 1.0.0
|
||||
|
||||
---
|
||||
|
||||
The supported installation methods for Mininet are 1) using a
|
||||
pre-built VM image, and 2) native installation on Ubuntu. You can also
|
||||
easily create your own Mininet VM image (4).
|
||||
|
||||
The supported installation methods for Mininet are 1) using
|
||||
a pre-built VM image, and 2) native installation on Ubuntu or Debian.
|
||||
(Other distributions may be supported in the future - if you would
|
||||
like to contribute an installation script, we would welcome it!)
|
||||
|
||||
1. Easiest "installation" - use our pre-built VM image!
|
||||
1. Easiest "install" - use our pre-built VM image!
|
||||
|
||||
The easiest way to get Mininet running is to start with one of our
|
||||
pre-built virtual machine images from <http://mininet.org/>
|
||||
The easiest way to get Mininet running is to start with one of our pre-built
|
||||
virtual machine images from http://openflow.org/mininet
|
||||
|
||||
Boot up the VM image, log in, and follow the instructions on the
|
||||
Mininet web site.
|
||||
Boot up the VM image, log in, and follow the instructions on the wiki page.
|
||||
|
||||
One advantage of using the VM image is that it doesn't mess with
|
||||
your native OS installation or damage it in any way.
|
||||
An additional advantage of using the VM image is that it doesn't mess with
|
||||
your native OS installation or damage it in any way.
|
||||
|
||||
Although a single Mininet instance can simulate multiple networks
|
||||
with multiple controllers, only one Mininet instance may currently
|
||||
be run at a time, and Mininet requires root access in the machine
|
||||
it's running on. Therefore, if you have a multiuser system, you
|
||||
may wish to consider running Mininet in a VM.
|
||||
2. Native installation (experimental!) for Ubuntu 10.04 LTS
|
||||
|
||||
2. Next-easiest option: use our Ubuntu package!
|
||||
If you are running Ubuntu 10.04 LTS (or possibly Debian 5), you may be
|
||||
able to use our handy install.sh script, which is in mininet/util.
|
||||
|
||||
To install Mininet itself (i.e. `mn` and the Python API) on Ubuntu
|
||||
12.10+:
|
||||
WARNING: USE AT YOUR OWN RISK!
|
||||
|
||||
sudo apt-get install mininet
|
||||
install.sh is a bit intrusive and may possibly damage your OS and/or
|
||||
home directory, by creating/modifying several directories such as
|
||||
mininet, openflow, openvswitch and noxcore. Although we hope it won't
|
||||
do anything completely terrible, you may want to look at the script
|
||||
before you run it, and you should make sure your system and home
|
||||
directory are backed up just in case!
|
||||
|
||||
Note: if you are upgrading from an older version of Mininet, make
|
||||
sure you remove the old OVS from `/usr/local`:
|
||||
To install ALL of the software which we use for OpenFlow tutorials,
|
||||
you may use
|
||||
|
||||
sudo rm /usr/local/bin/ovs*
|
||||
sudo rm /usr/local/sbin/ovs*
|
||||
$ mininet/util/install.sh
|
||||
|
||||
3. Native installation from source
|
||||
This takes about 20-30 minutes.
|
||||
|
||||
3.1. Native installation from source on Ubuntu 12.04+
|
||||
Alternately, you can install just the pieces you need.
|
||||
|
||||
If you're reading this, you've probably already done so, but the
|
||||
command to download the Mininet source code is:
|
||||
We recommend the following steps, in order:
|
||||
|
||||
git clone git://github.com/mininet/mininet.git
|
||||
[a) On Debian 5, first install a Mininet-compatible kernel:
|
||||
$ mininet/util/install.sh -k
|
||||
Reboot and run 'uname -r' to make sure you're running the new kernel.]
|
||||
|
||||
Note that the above git command will check out the latest and greatest
|
||||
Mininet (which we recommend!) If you want to run the last tagged/released
|
||||
version of Mininet, you can look at the release tags using
|
||||
b) Install mininet and its dependencies:
|
||||
$ mininet/util/install.sh -n
|
||||
|
||||
c) Install OpenFlow 1.0 and associated useful software
|
||||
$ mininet/util/install.sh -f
|
||||
|
||||
cd mininet
|
||||
git tag
|
||||
d) Install Open vSwitch and its kernel module
|
||||
$ mininet/util/install.sh -vm
|
||||
|
||||
and then
|
||||
e) If you wish to install the version of NOX we use in the tutorial:
|
||||
$ mininet/util/install.sh -x
|
||||
|
||||
git checkout <release tag>
|
||||
Note: NOX development is progressing over time, so after you complete
|
||||
the tutorial you may wish to install the latest and greatest NOX from
|
||||
noxrepo.org.
|
||||
|
||||
where <release tag> is the release you want to check out.
|
||||
Good luck! Some additional installation notes are provided below, for
|
||||
the brave and/or Linux-savvy, or those who are trying to understand what
|
||||
is installed and why.
|
||||
|
||||
If you are running Ubuntu, Debian, or Fedora, you may be able to use
|
||||
our handy `install.sh` script, which is in `mininet/util`.
|
||||
p.s. Note that only one instance of Mininet is currently supported on a single
|
||||
machine - that's one reason we recommend using a VM to run it.
|
||||
|
||||
*WARNING: USE AT YOUR OWN RISK!*
|
||||
---
|
||||
|
||||
`install.sh` is a bit intrusive and may possibly damage your OS
|
||||
and/or home directory, by creating/modifying several directories
|
||||
such as `mininet`, `openflow`, `oftest`, `pox`, etc.. We recommend
|
||||
trying it in a VM before trying it on a system you use from day to day.
|
||||
Mininet Manual Installation Notes
|
||||
|
||||
Although we hope it won't do anything completely terrible, you may
|
||||
want to look at the script before you run it, and you should make
|
||||
sure your system and home directory are backed up just in case!
|
||||
These installation notes assume you understand how to do things like
|
||||
compile kernels, apply patches, configure networks, write code, etc.. If
|
||||
this is unfamiliar territory, or if you run into trouble, we recommend
|
||||
using one of our pre-built virtual machine images (see above.)
|
||||
|
||||
To install Mininet itself, the OpenFlow reference implementation, and
|
||||
Open vSwitch, you may use:
|
||||
If you wish to try to create a VM to run Mininet, you may also wish
|
||||
to look at the Wiki page:
|
||||
|
||||
mininet/util/install.sh -fnv
|
||||
http://openflow.org/foswiki/bin/view/OpenFlow/MininetVMCreationNotes
|
||||
|
||||
This should be reasonably quick, and the following command should
|
||||
work after the installation:
|
||||
0. Obtaining Mininet
|
||||
|
||||
sudo mn --test pingall
|
||||
If you're reading this, you've already done it, but the command to
|
||||
download mininet is:
|
||||
|
||||
git clone git://openflow.org/mininet.git
|
||||
|
||||
1. Core Mininet installation
|
||||
|
||||
To install ALL of the software which we use for OpenFlow tutorials,
|
||||
including POX, the OpenFlow WireShark dissector, the `oftest`
|
||||
framework, and other potentially useful software, you may use:
|
||||
The core Mininet installation requires gcc, make, python,
|
||||
and setuptools. On Ubuntu and Debian you may install them with:
|
||||
|
||||
# aptitude install gcc make python setuptools
|
||||
|
||||
mininet/util/install.sh -a
|
||||
To install Mininet itself, with root privileges:
|
||||
|
||||
# cd mininet
|
||||
# make install
|
||||
|
||||
This takes about 4 minutes on our test system.
|
||||
This places the mininet package in /usr/lib/python-*/site-packages/,
|
||||
so that 'import mininet' will work, and installs the primary mn
|
||||
script (mn) as well as its helper utility (mnexec.)
|
||||
|
||||
On Ubuntu and Debian, Mininet's dependencies and core files may also be
|
||||
installed using mininet/util/install.sh -n
|
||||
|
||||
You can change the directory where the dependencies are installed using
|
||||
the -s <directory> flag.
|
||||
2. Installation script for Ubuntu/Debian Lenny
|
||||
|
||||
mininet/util/install.sh -s <directory> -a
|
||||
If you are running Ubuntu 10.04 or Debian Lenny, you may be able to use the
|
||||
util/install.sh script to install a compatible Linux kernel as well as
|
||||
other software including the OpenFlow reference implementation, the Open
|
||||
vSwitch switch implementation, and the NOX OpenFlow controller.
|
||||
|
||||
3.2. Native installation from source on Fedora 18+.
|
||||
Many different installation options are possible by passing different
|
||||
options to install.sh; install.sh -h lists them all.
|
||||
|
||||
Assuming the mininet source tree is installed in ~/mininet, the steps to run
|
||||
install.sh to install EVERYTHING we use for OpenFlow tutorials are:
|
||||
|
||||
% cd
|
||||
% time ~/mininet/util/install.sh # installs tons of stuff
|
||||
% sudo reboot # to load new kernel
|
||||
% ~/mininet/util/install.sh -c # to clean out unneeded kernel stuff
|
||||
|
||||
As root execute the following operations:
|
||||
This installs a lot of useful software, but it will take a while (30
|
||||
minutes or more, depending on your network connection, computer, etc..)
|
||||
|
||||
Probably the minimal semi-useful configuration would be to install
|
||||
Mininet itself, kernel support if necessary, and either the
|
||||
reference OpenFlow switch or Open vSwitch. This could be installed
|
||||
as follows:
|
||||
|
||||
% sudo ~/mininet/util/install.sh -knvm
|
||||
|
||||
Respectively, this installs kernel support, core mininet dependencies,
|
||||
Open vSwitch, and the Open vSwitch kernel module. If a new kernel was
|
||||
installed, then a reboot may be required.
|
||||
|
||||
* install git
|
||||
If install.sh cannot be used for some reason (e.g. you're on Fedora
|
||||
or some other Linux - please don't say CentOS) or if you don't want to
|
||||
install all of these components (they're useful!), the kernel and
|
||||
OpenFlow software requirements are described in steps [3] and [4],
|
||||
which follow.
|
||||
|
||||
yum install git
|
||||
If you successfully used install.sh, congratulations! You're basically
|
||||
done. Proceed to step [6] for additional advice.
|
||||
|
||||
3. Linux Kernel requirements
|
||||
|
||||
* create an user account (e.g. mininet) and add it to the wheel group
|
||||
Mininet requires a kernel built with network namespace support enabled,
|
||||
i.e. with CONFIG_NET_NS=Y, such as the kernel shipped with
|
||||
Ubuntu 10.04 LTS, currently 2.6.32. On Ubuntu 10.04, you should not need
|
||||
to install or build a custom kernel, although 2.6.33+ is faster at
|
||||
tearing down virtual ethernet pairs.
|
||||
|
||||
useradd [...] mininet
|
||||
usermod -a -G wheel mininet
|
||||
For Ubuntu and Debian, we provide a 2.6.33 kernel package which you may be
|
||||
able to install using "util/install.sh -k". Note our kernel package
|
||||
requires an ext2 or ext3 root file system, so it won't work if you have
|
||||
a default Ubuntu install, which uses ext4.
|
||||
|
||||
If your kernel wasn't compiled with CONFIG_NET_NS=Y, you will need to
|
||||
build and install a kernel that does! >= 2.6.33 works better, but may
|
||||
be harder to get working, depending on your Linux distribution.
|
||||
|
||||
A script for building Debian packages for 2.6.33.1 is provided in
|
||||
mininet/util/kbuild. You may wish to read it, as it applies patches
|
||||
to enable 2.6.33.1 to build under debian-stable, and to enable the
|
||||
tun driver to work correctly with Mininet.
|
||||
|
||||
Earlier kernels (e.g. 2.6.29) work with CONFIG_NET_NS enabled and no
|
||||
additional patches, but are much slower at removing veth interfaces,
|
||||
resulting in much slower switch shutdown.
|
||||
|
||||
* change the SElinux setting to permissive. It can be done
|
||||
temporarily with:
|
||||
For scalable configurations, you might need to increase some of your
|
||||
kernel limits. Sample params are in util/sysctl_addon, which can be
|
||||
appended to /etc/sysctl.conf (and modified as necessary for your
|
||||
desired configuration):
|
||||
|
||||
setenforce 0
|
||||
sudo su -c "cat sysctl_addon >> /etc/sysctl.conf"
|
||||
|
||||
then login with the new account (e.g. mininet) and do the following:
|
||||
To save the config change, run:
|
||||
|
||||
* clone the Mininet repository
|
||||
sudo sysctl -p
|
||||
|
||||
4. OpenFlow software and configuration requirements
|
||||
|
||||
git clone git://github.com/mininet/mininet.git
|
||||
Mininet requires either the reference OpenFlow switch implementation
|
||||
(from openflowswitch.org) or Open vSwitch (openvswitch.org) to be
|
||||
installed. "make test" requires the reference user space
|
||||
implementations as well as Open vSwitch. Note the reference kernel
|
||||
implementation is not currently included in OpenFlow 1.0.
|
||||
|
||||
On Ubuntu and Debian, the install.sh script may be used with the '-f'
|
||||
option to install the OpenFlow reference implementation, the '-v' option
|
||||
to build Open vSwitch, and the '-m' option to install the Open vSwitch
|
||||
kernel module into /lib/modules (note: you must build Open vSwitch first!)
|
||||
|
||||
Mininet will automatically load and remove kernel module dependencies
|
||||
for supported switch types, using modprobe and rmmod - but these
|
||||
modules must be in a location where modprobe can find them (e.g.
|
||||
something like /lib/modules/`uname -r`/kernel/drivers/net/)
|
||||
|
||||
* install Mininet, the OpenFlow reference implementation, and
|
||||
Open vSwitch
|
||||
The reference OpenFlow controller (controller(8)) only supports 16
|
||||
switches by default! If you wish to run a network with more than 16
|
||||
switches, please recompile controller(8) with larger limits, or use a
|
||||
different controller such as nox. A patch to controller(8) is included
|
||||
as util/openflow-patches/controller.patch.
|
||||
|
||||
5. Other software dependencies
|
||||
|
||||
mininet/util/install.sh -fnv
|
||||
On Ubuntu and Debian, other Mininet dependencies may be installed using
|
||||
the '-n' option of the install.sh script.
|
||||
|
||||
* enable and start openvswitch
|
||||
To run the iperf test, you need to install iperf:
|
||||
|
||||
sudo systemctl enable openvswitch
|
||||
sudo systemctl start openvswitch
|
||||
sudo aptitude/yum install iperf
|
||||
|
||||
* test the mininet installation
|
||||
We assume you already have ping installed. ;-)
|
||||
|
||||
To use xterm or sshd with Mininet, you need the following:
|
||||
|
||||
sudo mn --test pingall
|
||||
|
||||
4. Creating your own Mininet/OpenFlow tutorial VM
|
||||
|
||||
Creating your own Ubuntu Mininet VM for use with the OpenFlow tutorial
|
||||
is easy! First, create a new Ubuntu VM. Next, run two commands in it:
|
||||
|
||||
wget https://raw.github.com/mininet/mininet/master/util/vm/install-mininet-vm.sh
|
||||
time install-mininet-vm.sh
|
||||
|
||||
Finally, verify that Mininet is installed and working in the VM:
|
||||
|
||||
sudo mn --test pingall
|
||||
|
||||
5. Installation on other Linux distributions
|
||||
|
||||
Although we don't support other Linux distributions directly, it
|
||||
should be possible to install and run Mininet with some degree of
|
||||
manual effort.
|
||||
|
||||
In general, you must have:
|
||||
|
||||
* A Linux kernel compiled with network namespace support enabled
|
||||
|
||||
* An compatible software switch such as Open vSwitch or
|
||||
the Linux bridge.
|
||||
|
||||
* Python, `bash`, `ping`, `iperf`, etc.
|
||||
|
||||
* Root privileges (required for network device access)
|
||||
|
||||
We encourage contribution of patches to the `install.sh` script to
|
||||
support other Linux distributions.
|
||||
sudo aptitude/yum install sshd xterm screen
|
||||
|
||||
Some examples may have additional requirements - consult the specific
|
||||
example file for details.
|
||||
|
||||
The install.sh script has an '-x' option to install the version of
|
||||
NOX from the OpenFlow tutorial.
|
||||
|
||||
6. Other notes and recommendations
|
||||
|
||||
If you did not install certain useful packages and you wish to later,
|
||||
it may be possible to install them using install.sh.
|
||||
|
||||
Mininet should be run either on a machine with
|
||||
no other important processes, or on a virtual machine (recommended!)
|
||||
|
||||
Multiple concurrent Mininet instances are not supported!
|
||||
|
||||
Good luck!
|
||||
|
||||
Mininet Team
|
||||
|
||||
---
|
||||
|
||||
Historical information on OpenFlow 0.8.9 and the reference kernel module:
|
||||
|
||||
The kernel reference implementation has been deprecated, but it may
|
||||
be possible to get it work with Mininet.
|
||||
|
||||
To switch to the most recent OpenFlow 0.8.9 release branch (the most
|
||||
recent one with full NOX support and kernel datapath support) in your
|
||||
OpenFlow git tree:
|
||||
|
||||
git checkout -b release/0.8.9 remotes/origin/release/0.8.9
|
||||
|
||||
A patch to enable datapath.c to compile with recent kernels
|
||||
is included in util/openflow-patches/datapath.patch.
|
||||
|
||||
In OpenFlow 1.0, switch port numbering starts at 1 (for better or for worse.)
|
||||
To run with previous versions of OpenFlow, it may be necessary
|
||||
to change SWITCH_PORT_BASE from 1 to 0 in node.py.
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
@@ -1,10 +1,6 @@
|
||||
Mininet 2.2.1 License
|
||||
Mininet 1.0.0 License
|
||||
|
||||
Copyright (c) 2013-2015 Open Networking Laboratory
|
||||
Copyright (c) 2009-2012 Bob Lantz and The Board of Trustees of
|
||||
The Leland Stanford Junior University
|
||||
|
||||
Original authors: Bob Lantz and Brandon Heller
|
||||
Copyright (c) 2009-2011 Bob Lantz and Brandon Heller
|
||||
|
||||
We are making Mininet available for public use and benefit with the
|
||||
expectation that others will use, modify and enhance the Software and
|
||||
|
||||
@@ -1,31 +1,21 @@
|
||||
MININET = mininet/*.py
|
||||
TEST = mininet/test/*.py
|
||||
EXAMPLES = mininet/examples/*.py
|
||||
MN = bin/mn
|
||||
BIN = $(MN)
|
||||
EXAMPLES = examples/*.py
|
||||
BIN = bin/mn
|
||||
PYSRC = $(MININET) $(TEST) $(EXAMPLES) $(BIN)
|
||||
MNEXEC = mnexec
|
||||
MANPAGES = mn.1 mnexec.1
|
||||
P8IGN = E251,E201,E302,E202,E126,E127,E203,E226
|
||||
BINDIR = /usr/bin
|
||||
MANDIR = /usr/share/man/man1
|
||||
DOCDIRS = doc/html doc/latex
|
||||
PDF = doc/latex/refman.pdf
|
||||
|
||||
CFLAGS += -Wall -Wextra
|
||||
P8IGN = E251,E201,E302,E202
|
||||
|
||||
all: codecheck test
|
||||
|
||||
clean:
|
||||
rm -rf build dist *.egg-info *.pyc $(MNEXEC) $(MANPAGES) $(DOCDIRS)
|
||||
rm -rf build dist *.egg-info *.pyc $(MNEXEC)
|
||||
|
||||
codecheck: $(PYSRC)
|
||||
-echo "Running code check"
|
||||
util/versioncheck.py
|
||||
pyflakes $(PYSRC)
|
||||
pylint --rcfile=.pylint $(PYSRC)
|
||||
# Exclude miniedit from pep8 checking for now
|
||||
pep8 --repeat --ignore=$(P8IGN) `ls $(PYSRC) | grep -v miniedit.py`
|
||||
pep8 --repeat --ignore=$(P8IGN) $(PYSRC)
|
||||
|
||||
errcheck: $(PYSRC)
|
||||
-echo "Running check for errors only"
|
||||
@@ -35,39 +25,15 @@ errcheck: $(PYSRC)
|
||||
test: $(MININET) $(TEST)
|
||||
-echo "Running tests"
|
||||
mininet/test/test_nets.py
|
||||
mininet/test/test_hifi.py
|
||||
|
||||
slowtest: $(MININET)
|
||||
-echo "Running slower tests (walkthrough, examples)"
|
||||
mininet/test/test_walkthrough.py -v
|
||||
mininet/examples/test/runner.py -v
|
||||
|
||||
mnexec: mnexec.c $(MN) mininet/net.py
|
||||
cc $(CFLAGS) $(LDFLAGS) -DVERSION=\"`PYTHONPATH=. $(MN) --version`\" $< -o $@
|
||||
|
||||
install: $(MNEXEC) $(MANPAGES)
|
||||
install $(MNEXEC) $(BINDIR)
|
||||
install $(MANPAGES) $(MANDIR)
|
||||
install: $(MNEXEC)
|
||||
install $(MNEXEC) /usr/local/bin/
|
||||
python setup.py install
|
||||
|
||||
develop: $(MNEXEC) $(MANPAGES)
|
||||
# Perhaps we should link these as well
|
||||
install $(MNEXEC) $(BINDIR)
|
||||
install $(MANPAGES) $(MANDIR)
|
||||
develop: $(MNEXEC)
|
||||
install $(MNEXEC) /usr/local/bin/
|
||||
python setup.py develop
|
||||
|
||||
man: $(MANPAGES)
|
||||
doc:
|
||||
doxygen doxygen.cfg
|
||||
|
||||
mn.1: $(MN)
|
||||
PYTHONPATH=. help2man -N -n "create a Mininet network." \
|
||||
--no-discard-stderr $< -o $@
|
||||
|
||||
mnexec.1: mnexec
|
||||
help2man -N -n "execution utility for Mininet." \
|
||||
-h "-h" -v "-v" --no-discard-stderr ./$< -o $@
|
||||
|
||||
.PHONY: doc
|
||||
|
||||
doc: man
|
||||
doxygen doc/doxygen.cfg
|
||||
make -C doc/latex
|
||||
|
||||
@@ -0,0 +1,86 @@
|
||||
|
||||
Mininet: A Simple Virtual Testbed for OpenFlow/SDN
|
||||
or
|
||||
How to Squeeze a 1024-node OpenFlow Network onto your Laptop
|
||||
|
||||
Mininet 1.0.0
|
||||
|
||||
---
|
||||
Welcome to Mininet!
|
||||
|
||||
Mininet creates OpenFlow test networks by using process-based
|
||||
virtualization and network namespaces.
|
||||
|
||||
Simulated hosts (as well as switches and controllers with the user
|
||||
datapath) are created as processes in separate network namespaces. This
|
||||
allows a complete OpenFlow network to be simulated on top of a single
|
||||
Linux kernel.
|
||||
|
||||
Mininet may be invoked directly from the command line, and also provides a
|
||||
handy Python API for creating networks of varying sizes and topologies.
|
||||
|
||||
Mininet is currently in *limited alpha release*. We encourage you to
|
||||
experiment with it and hope that you will provide us with feedback on
|
||||
features, documentation, and how you're using it. We plan to make it
|
||||
available publicly via a GPL or BSD license (probably in April), but please
|
||||
don't distribute the code or URLs yet! The feedback you provide will help
|
||||
us improve Mininet for general release.
|
||||
|
||||
In order to run Mininet, you must have:
|
||||
|
||||
* A Linux 2.6.26 or greater kernel compiled with network namespace support
|
||||
enabled (see INSTALL for additional information.)
|
||||
|
||||
* An OpenFlow implementation (either the reference user or kernel
|
||||
space implementations, or Open vSwitch.) Appropriate kernel modules
|
||||
(e.g. tun and ofdatapath for the reference kernel implementation) must
|
||||
be loaded.
|
||||
|
||||
* Python, bash, ping, iperf, etc.
|
||||
|
||||
* Root privileges (required for network device access)
|
||||
|
||||
Currently Mininet includes:
|
||||
|
||||
- A simple node infrastructure (Host, Switch, Controller classes) for
|
||||
creating virtual OpenFlow networks
|
||||
|
||||
- A simple network infrastructure (Mininet class) supporting parametrized
|
||||
topologies (Topo subclasses.) For example, a tree network may be created
|
||||
with the command
|
||||
|
||||
# mn --topo tree,depth=2,fanout=3
|
||||
|
||||
- Basic tests, including connectivity (ping) and bandwidth (iperf)
|
||||
|
||||
- A command-line interface (CLI class) which provides useful
|
||||
diagnostic commands, as well as the ability to send a command to a
|
||||
node. For example,
|
||||
|
||||
mininet> h11 ifconfig -a
|
||||
|
||||
tells host h11 to run the command 'ifconfig -a'
|
||||
|
||||
- A 'cleanup' command to get rid of junk (interfaces, processes, files in
|
||||
/tmp, etc.) which might be left around by Mininet or Linux. Try this if
|
||||
things stop working!
|
||||
|
||||
# mn -c
|
||||
|
||||
- Examples (in the examples/ directory) to help you get started.
|
||||
|
||||
Batteries are not included (yet!)
|
||||
|
||||
However, some preliminary installation notes are included in the INSTALL
|
||||
file.
|
||||
|
||||
Additionally, much useful information, including a Mininet tutorial,
|
||||
is available on the Mininet wiki:
|
||||
|
||||
http://openflow.org/mininet
|
||||
|
||||
Enjoy, and good luck!
|
||||
|
||||
---
|
||||
Bob Lantz
|
||||
rlantz@cs.stanford.edu
|
||||
@@ -1,129 +0,0 @@
|
||||
Mininet: Rapid Prototyping for Software Defined Networks
|
||||
========================================================
|
||||
|
||||
*The best way to emulate almost any network on your laptop!*
|
||||
|
||||
Mininet 2.2.1
|
||||
|
||||
### What is Mininet?
|
||||
|
||||
Mininet emulates a complete network of hosts, links, and switches
|
||||
on a single machine. To create a sample two-host, one-switch network,
|
||||
just run:
|
||||
|
||||
`sudo mn`
|
||||
|
||||
Mininet is useful for interactive development, testing, and demos,
|
||||
especially those using OpenFlow and SDN. OpenFlow-based network
|
||||
controllers prototyped in Mininet can usually be transferred to
|
||||
hardware with minimal changes for full line-rate execution.
|
||||
|
||||
### How does it work?
|
||||
|
||||
Mininet creates virtual networks using process-based virtualization
|
||||
and network namespaces - features that are available in recent Linux
|
||||
kernels. In Mininet, hosts are emulated as `bash` processes running in
|
||||
a network namespace, so any code that would normally run on a Linux
|
||||
server (like a web server or client program) should run just fine
|
||||
within a Mininet "Host". The Mininet "Host" will have its own private
|
||||
network interface and can only see its own processes. Switches in
|
||||
Mininet are software-based switches like Open vSwitch or the OpenFlow
|
||||
reference switch. Links are virtual ethernet pairs, which live in the
|
||||
Linux kernel and connect our emulated switches to emulated hosts
|
||||
(processes).
|
||||
|
||||
### Features
|
||||
|
||||
Mininet includes:
|
||||
|
||||
* A command-line launcher (`mn`) to instantiate networks.
|
||||
|
||||
* A handy Python API for creating networks of varying sizes and
|
||||
topologies.
|
||||
|
||||
* Examples (in the `examples/` directory) to help you get started.
|
||||
|
||||
* Full API documentation via Python `help()` docstrings, as well as
|
||||
the ability to generate PDF/HTML documentation with `make doc`.
|
||||
|
||||
* Parametrized topologies (`Topo` subclasses) using the Mininet
|
||||
object. For example, a tree network may be created with the
|
||||
command:
|
||||
|
||||
`mn --topo tree,depth=2,fanout=3`
|
||||
|
||||
* A command-line interface (`CLI` class) which provides useful
|
||||
diagnostic commands (like `iperf` and `ping`), as well as the
|
||||
ability to run a command to a node. For example,
|
||||
|
||||
`mininet> h11 ifconfig -a`
|
||||
|
||||
tells host h11 to run the command `ifconfig -a`
|
||||
|
||||
* A "cleanup" command to get rid of junk (interfaces, processes, files
|
||||
in /tmp, etc.) which might be left around by Mininet or Linux. Try
|
||||
this if things stop working!
|
||||
|
||||
`mn -c`
|
||||
|
||||
### New features in this release
|
||||
|
||||
This is primarily a performance improvement and bug fix release.
|
||||
|
||||
- Batch startup has been implemented for Open vSwitch, improving
|
||||
startup performance.
|
||||
|
||||
- OVS patch links have been implemented via OVSLink and --link ovs
|
||||
|
||||
Warning! These links have *serious limitations* compared to
|
||||
virtual Ethernet pairs: they are not attached to real Linux
|
||||
interfaces so you cannot use tcpdump or wireshark with them;
|
||||
they also cannot be used in long chains - we don't recommend more
|
||||
than 64 OVSLinks, for example --linear,64. However, they can offer
|
||||
significantly better performance than veth pairs, for certain
|
||||
configurations.
|
||||
|
||||
- You can now easily install Mininet on a Raspberry Pi ;-)
|
||||
|
||||
- Additional information for this release and previous releases
|
||||
may be found in the release notes on docs.mininet.org
|
||||
|
||||
### Installation
|
||||
|
||||
See `INSTALL` for installation instructions and details.
|
||||
|
||||
### Documentation
|
||||
|
||||
In addition to the API documentation (`make doc`), much useful
|
||||
information, including a Mininet walkthrough and an introduction
|
||||
to the Python API, is available on the
|
||||
[Mininet Web Site](http://mininet.org).
|
||||
There is also a wiki which you are encouraged to read and to
|
||||
contribute to, particularly the Frequently Asked Questions (FAQ.)
|
||||
|
||||
### Support
|
||||
|
||||
Mininet is community-supported. We encourage you to join the
|
||||
Mininet mailing list, `mininet-discuss` at:
|
||||
|
||||
<https://mailman.stanford.edu/mailman/listinfo/mininet-discuss>
|
||||
|
||||
### Join Us
|
||||
|
||||
Thanks again to all of the Mininet contributors!
|
||||
|
||||
Mininet is an open source project and is currently hosted
|
||||
at <https://github.com/mininet>. You are encouraged to download
|
||||
the code, examine it, modify it, and submit bug reports, bug fixes,
|
||||
feature requests, new features and other issues and pull requests.
|
||||
Thanks to everyone who has contributed code to the Mininet project
|
||||
(see CONTRIBUTORS for more info!) It is because of everyone's
|
||||
hard work that Mininet continues to grow and improve.
|
||||
|
||||
### Enjoy Mininet
|
||||
|
||||
Best wishes, and we look forward to seeing what you can do with
|
||||
Mininet to change the networking world!
|
||||
|
||||
Bob Lantz
|
||||
Mininet Core Team
|
||||
@@ -12,112 +12,125 @@ Example to pull custom params (topo, switch, etc.) from a file:
|
||||
"""
|
||||
|
||||
from optparse import OptionParser
|
||||
import os
|
||||
import os.path
|
||||
import sys
|
||||
import time
|
||||
|
||||
# Fix setuptools' evil madness, and open up (more?) security holes
|
||||
if 'PYTHONPATH' in os.environ:
|
||||
sys.path = os.environ[ 'PYTHONPATH' ].split( ':' ) + sys.path
|
||||
|
||||
from mininet.clean import cleanup
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import lg, LEVELS, info, debug, warn, error
|
||||
from mininet.net import Mininet, MininetWithControlNet, VERSION
|
||||
from mininet.log import lg, LEVELS, info, warn
|
||||
from mininet.net import Mininet, MininetWithControlNet
|
||||
from mininet.node import ( Host, CPULimitedHost, Controller, OVSController,
|
||||
Ryu, NOX, RemoteController, findController,
|
||||
DefaultController, NullController,
|
||||
UserSwitch, OVSSwitch, OVSBridge,
|
||||
IVSSwitch )
|
||||
from mininet.nodelib import LinuxBridge
|
||||
from mininet.link import Link, TCLink, OVSLink
|
||||
from mininet.topo import ( SingleSwitchTopo, LinearTopo,
|
||||
SingleSwitchReversedTopo, MinimalTopo )
|
||||
from mininet.topolib import TreeTopo, TorusTopo
|
||||
from mininet.util import customClass, specialClass, splitArgs
|
||||
from mininet.util import buildTopo
|
||||
NOX, RemoteController, UserSwitch, OVSKernelSwitch,
|
||||
OVSLegacyKernelSwitch )
|
||||
from mininet.link import Link, TCLink
|
||||
from mininet.topo import SingleSwitchTopo, LinearTopo, SingleSwitchReversedTopo
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.util import makeNumeric, custom
|
||||
|
||||
from functools import partial
|
||||
|
||||
# Experimental! cluster edition prototype
|
||||
from mininet.examples.cluster import ( MininetCluster, RemoteHost,
|
||||
RemoteOVSSwitch, RemoteLink,
|
||||
SwitchBinPlacer, RandomPlacer,
|
||||
ClusterCleanup )
|
||||
from mininet.examples.clustercli import ClusterCLI
|
||||
def customNode( constructors, argStr ):
|
||||
"Return custom Node constructor based on argStr"
|
||||
cname, newargs, kwargs = splitArgs( argStr )
|
||||
constructor = constructors.get( cname, None )
|
||||
|
||||
if not constructor:
|
||||
raise Exception( "error: %s is unknown - please specify one of %s" %
|
||||
( cname, constructors.keys() ) )
|
||||
|
||||
def customized( name, *args, **params ):
|
||||
"Customized Node constructor"
|
||||
params.update( kwargs )
|
||||
if not newargs:
|
||||
return constructor( name, *args, **params )
|
||||
if args:
|
||||
warn( 'warning: %s replacing %s with %s\n' % (
|
||||
constructor, args, newargs ) )
|
||||
return constructor( name, *newargs, **params )
|
||||
|
||||
return customized
|
||||
|
||||
PLACEMENT = { 'block': SwitchBinPlacer, 'random': RandomPlacer }
|
||||
|
||||
# built in topologies, created only when run
|
||||
TOPODEF = 'minimal'
|
||||
TOPOS = { 'minimal': MinimalTopo,
|
||||
'linear': LinearTopo,
|
||||
'reversed': SingleSwitchReversedTopo,
|
||||
'single': SingleSwitchTopo,
|
||||
'tree': TreeTopo,
|
||||
'torus': TorusTopo }
|
||||
TOPOS = { 'minimal': lambda: SingleSwitchTopo( k=2 ),
|
||||
'linear': LinearTopo,
|
||||
'reversed': SingleSwitchReversedTopo,
|
||||
'single': SingleSwitchTopo,
|
||||
'tree': TreeTopo }
|
||||
|
||||
SWITCHDEF = 'default'
|
||||
SWITCHDEF = 'ovsk'
|
||||
SWITCHES = { 'user': UserSwitch,
|
||||
'ovs': OVSSwitch,
|
||||
'ovsbr' : OVSBridge,
|
||||
# Keep ovsk for compatibility with 2.0
|
||||
'ovsk': OVSSwitch,
|
||||
'ivs': IVSSwitch,
|
||||
'lxbr': LinuxBridge,
|
||||
'default': OVSSwitch }
|
||||
'ovsk': OVSKernelSwitch,
|
||||
'ovsl': OVSLegacyKernelSwitch }
|
||||
|
||||
HOSTDEF = 'proc'
|
||||
HOSTS = { 'proc': Host,
|
||||
'rt': specialClass( CPULimitedHost, defaults=dict( sched='rt' ) ),
|
||||
'cfs': specialClass( CPULimitedHost, defaults=dict( sched='cfs' ) ) }
|
||||
|
||||
CONTROLLERDEF = 'default'
|
||||
'rt': custom( CPULimitedHost, sched='rt' ),
|
||||
'cfs': custom( CPULimitedHost, sched='cfs' ) }
|
||||
|
||||
CONTROLLERDEF = 'ref'
|
||||
CONTROLLERS = { 'ref': Controller,
|
||||
'ovsc': OVSController,
|
||||
'nox': NOX,
|
||||
'remote': RemoteController,
|
||||
'ryu': Ryu,
|
||||
'default': DefaultController, # Note: replaced below
|
||||
'none': NullController }
|
||||
'none': lambda name: None }
|
||||
|
||||
LINKDEF = 'default'
|
||||
LINKS = { 'default': Link,
|
||||
'tc': TCLink,
|
||||
'ovs': OVSLink }
|
||||
'tc': TCLink }
|
||||
|
||||
|
||||
# optional tests to run
|
||||
TESTS = [ 'cli', 'build', 'pingall', 'pingpair', 'iperf', 'all', 'iperfudp',
|
||||
'none' ]
|
||||
'none' ]
|
||||
|
||||
ALTSPELLING = { 'pingall': 'pingAll',
|
||||
'pingpair': 'pingPair',
|
||||
'iperfudp': 'iperfUdp',
|
||||
'iperfUDP': 'iperfUdp' }
|
||||
ALTSPELLING = { 'pingall': 'pingAll', 'pingpair': 'pingPair',
|
||||
'iperfudp': 'iperfUdp', 'iperfUDP': 'iperfUdp', 'prefixlen': 'prefixLen' }
|
||||
|
||||
|
||||
def addDictOption( opts, choicesDict, default, name, **kwargs ):
|
||||
def splitArgs( argstr ):
|
||||
"""Split argument string into usable python arguments
|
||||
argstr: argument string with format fn,arg2,kw1=arg3...
|
||||
returns: fn, args, kwargs"""
|
||||
split = argstr.split( ',' )
|
||||
fn = split[ 0 ]
|
||||
params = split[ 1: ]
|
||||
# Convert int and float args; removes the need for function
|
||||
# to be flexible with input arg formats.
|
||||
args = [ makeNumeric( s ) for s in params if '=' not in s ]
|
||||
kwargs = {}
|
||||
for s in [ p for p in params if '=' in p ]:
|
||||
key, val = s.split( '=' )
|
||||
kwargs[ key ] = makeNumeric( val )
|
||||
return fn, args, kwargs
|
||||
|
||||
|
||||
def buildTopo( topoStr ):
|
||||
"Create topology from string with format (object, arg1, arg2,...)."
|
||||
topo, args, kwargs = splitArgs( topoStr )
|
||||
if topo not in TOPOS:
|
||||
raise Exception( 'Invalid topo name %s' % topo )
|
||||
return TOPOS[ topo ]( *args, **kwargs )
|
||||
|
||||
|
||||
def addDictOption( opts, choicesDict, default, name, helpStr=None ):
|
||||
"""Convenience function to add choices dicts to OptionParser.
|
||||
opts: OptionParser instance
|
||||
choicesDict: dictionary of valid choices, must include default
|
||||
default: default choice key
|
||||
name: long option name
|
||||
kwargs: additional arguments to add_option"""
|
||||
helpStr = ( '|'.join( sorted( choicesDict.keys() ) ) +
|
||||
'[,param=value...]' )
|
||||
helpList = [ '%s=%s' % ( k, v.__name__ )
|
||||
for k, v in choicesDict.items() ]
|
||||
helpStr += ' ' + ( ' '.join( helpList ) )
|
||||
params = dict( type='string', default=default, help=helpStr )
|
||||
params.update( **kwargs )
|
||||
opts.add_option( '--' + name, **params )
|
||||
|
||||
def version( *_args ):
|
||||
"Print Mininet version and exit"
|
||||
print "%s" % VERSION
|
||||
exit()
|
||||
help: string"""
|
||||
if default not in choicesDict:
|
||||
raise Exception( 'Invalid default %s for choices dict: %s' %
|
||||
( default, name ) )
|
||||
if not helpStr:
|
||||
helpStr = ( '|'.join( sorted( choicesDict.keys() ) ) +
|
||||
'[,param=value...]' )
|
||||
opts.add_option( '--' + name,
|
||||
type='string',
|
||||
default = default,
|
||||
help = helpStr )
|
||||
|
||||
|
||||
class MininetRunner( object ):
|
||||
@@ -133,32 +146,9 @@ class MininetRunner( object ):
|
||||
self.setup()
|
||||
self.begin()
|
||||
|
||||
def custom( self, _option, _opt_str, value, _parser ):
|
||||
"""Parse custom file and add params.
|
||||
option: option e.g. --custom
|
||||
opt_str: option string e.g. --custom
|
||||
value: the value the follows the option
|
||||
parser: option parser instance"""
|
||||
files = []
|
||||
if os.path.isfile( value ):
|
||||
# Accept any single file (including those with commas)
|
||||
files.append( value )
|
||||
else:
|
||||
# Accept a comma-separated list of filenames
|
||||
files += value.split(',')
|
||||
|
||||
for fileName in files:
|
||||
customs = {}
|
||||
if os.path.isfile( fileName ):
|
||||
execfile( fileName, customs, customs )
|
||||
for name, val in customs.iteritems():
|
||||
self.setCustom( name, val )
|
||||
else:
|
||||
raise Exception( 'could not find custom file: %s' % fileName )
|
||||
|
||||
def setCustom( self, name, value ):
|
||||
"Set custom parameters for MininetRunner."
|
||||
if name in ( 'topos', 'switches', 'hosts', 'controllers', 'links' ):
|
||||
if name in ( 'topos', 'switches', 'hosts', 'controllers' ):
|
||||
# Update dictionaries
|
||||
param = name.upper()
|
||||
globals()[ param ].update( value )
|
||||
@@ -169,100 +159,74 @@ class MininetRunner( object ):
|
||||
# Add or modify global variable or class
|
||||
globals()[ name ] = value
|
||||
|
||||
def setNat( self, _option, opt_str, value, parser ):
|
||||
"Set NAT option(s)"
|
||||
assert self # satisfy pylint
|
||||
parser.values.nat = True
|
||||
# first arg, first char != '-'
|
||||
if parser.rargs and parser.rargs[ 0 ][ 0 ] != '-':
|
||||
value = parser.rargs.pop( 0 )
|
||||
_, args, kwargs = splitArgs( opt_str + ',' + value )
|
||||
parser.values.nat_args = args
|
||||
parser.values.nat_kwargs = kwargs
|
||||
def parseCustomFile( self, fileName ):
|
||||
"Parse custom file and add params before parsing cmd-line options."
|
||||
customs = {}
|
||||
if os.path.isfile( fileName ):
|
||||
execfile( fileName, customs, customs )
|
||||
for name, val in customs.iteritems():
|
||||
self.setCustom( name, val )
|
||||
else:
|
||||
parser.values.nat_args = []
|
||||
parser.values.nat_kwargs = {}
|
||||
raise Exception( 'could not find custom file: %s' % fileName )
|
||||
|
||||
def parseArgs( self ):
|
||||
"""Parse command-line args and return options object.
|
||||
returns: opts parse options dict"""
|
||||
if '--custom' in sys.argv:
|
||||
index = sys.argv.index( '--custom' )
|
||||
if len( sys.argv ) > index + 1:
|
||||
filename = sys.argv[ index + 1 ]
|
||||
self.parseCustomFile( filename )
|
||||
else:
|
||||
raise Exception( 'Custom file name not found' )
|
||||
|
||||
desc = ( "The %prog utility creates Mininet network from the\n"
|
||||
"command line. It can create parametrized topologies,\n"
|
||||
"invoke the Mininet CLI, and run tests." )
|
||||
|
||||
usage = ( '%prog [options]\n'
|
||||
'(type %prog -h for details)' )
|
||||
|
||||
opts = OptionParser( description=desc, usage=usage )
|
||||
opts = OptionParser()
|
||||
addDictOption( opts, SWITCHES, SWITCHDEF, 'switch' )
|
||||
addDictOption( opts, HOSTS, HOSTDEF, 'host' )
|
||||
addDictOption( opts, CONTROLLERS, [], 'controller', action='append' )
|
||||
addDictOption( opts, CONTROLLERS, CONTROLLERDEF, 'controller' )
|
||||
addDictOption( opts, LINKS, LINKDEF, 'link' )
|
||||
addDictOption( opts, TOPOS, TOPODEF, 'topo' )
|
||||
|
||||
opts.add_option( '--clean', '-c', action='store_true',
|
||||
default=False, help='clean and exit' )
|
||||
opts.add_option( '--custom', action='callback',
|
||||
callback=self.custom,
|
||||
type='string',
|
||||
help='read custom classes or params from .py file(s)'
|
||||
)
|
||||
|
||||
default=False, help='clean and exit' )
|
||||
opts.add_option( '--custom', type='string', default=None,
|
||||
help='read custom topo and node params from .py file' )
|
||||
opts.add_option( '--test', type='choice', choices=TESTS,
|
||||
default=TESTS[ 0 ],
|
||||
help='|'.join( TESTS ) )
|
||||
default=TESTS[ 0 ],
|
||||
help='|'.join( TESTS ) )
|
||||
opts.add_option( '--xterms', '-x', action='store_true',
|
||||
default=False, help='spawn xterms for each node' )
|
||||
default=False, help='spawn xterms for each node' )
|
||||
opts.add_option( '--ipbase', '-i', type='string', default='10.0.0.0/8',
|
||||
help='base IP address for hosts' )
|
||||
opts.add_option( '--mac', action='store_true',
|
||||
default=False, help='automatically set host MACs' )
|
||||
default=False, help='automatically set host MACs' )
|
||||
opts.add_option( '--arp', action='store_true',
|
||||
default=False, help='set all-pairs ARP entries' )
|
||||
default=False, help='set all-pairs ARP entries' )
|
||||
opts.add_option( '--verbosity', '-v', type='choice',
|
||||
choices=LEVELS.keys(), default = 'info',
|
||||
help = '|'.join( LEVELS.keys() ) )
|
||||
choices=LEVELS.keys(), default = 'info',
|
||||
help = '|'.join( LEVELS.keys() ) )
|
||||
opts.add_option( '--ip', type='string', default='127.0.0.1',
|
||||
help='ip address as a dotted decimal string for a'
|
||||
'remote controller' )
|
||||
opts.add_option( '--innamespace', action='store_true',
|
||||
default=False, help='sw and ctrl in namespace?' )
|
||||
opts.add_option( '--listenport', type='int', default=6634,
|
||||
default=False, help='sw and ctrl in namespace?' )
|
||||
opts.add_option( '--listenport', type='int', default=6635,
|
||||
help='base port for passive switch listening' )
|
||||
opts.add_option( '--nolistenport', action='store_true',
|
||||
default=False, help="don't use passive listening " +
|
||||
"port")
|
||||
default=False, help="don't use passive listening port")
|
||||
opts.add_option( '--pre', type='string', default=None,
|
||||
help='CLI script to run before tests' )
|
||||
help='CLI script to run before tests' )
|
||||
opts.add_option( '--post', type='string', default=None,
|
||||
help='CLI script to run after tests' )
|
||||
help='CLI script to run after tests' )
|
||||
opts.add_option( '--prefixlen', type='int', default=8,
|
||||
help='prefix length (e.g. /8) for automatic '
|
||||
'network configuration' )
|
||||
opts.add_option( '--pin', action='store_true',
|
||||
default=False, help="pin hosts to CPU cores "
|
||||
"(requires --host cfs or --host rt)" )
|
||||
opts.add_option( '--nat', action='callback', callback=self.setNat,
|
||||
help="[option=val...] adds a NAT to the topology that"
|
||||
" connects Mininet hosts to the physical network."
|
||||
" Warning: This may route any traffic on the machine"
|
||||
" that uses Mininet's"
|
||||
" IP subnet into the Mininet network."
|
||||
" If you need to change"
|
||||
" Mininet's IP subnet, see the --ipbase option." )
|
||||
opts.add_option( '--version', action='callback', callback=version,
|
||||
help='prints the version and exits' )
|
||||
opts.add_option( '--cluster', type='string', default=None,
|
||||
metavar='server1,server2...',
|
||||
help=( 'run on multiple servers (experimental!)' ) )
|
||||
opts.add_option( '--placement', type='choice',
|
||||
choices=PLACEMENT.keys(), default='block',
|
||||
metavar='block|random',
|
||||
help=( 'node placement for --cluster '
|
||||
'(experimental!) ' ) )
|
||||
|
||||
self.options, self.args = opts.parse_args()
|
||||
|
||||
# We don't accept extra arguments after the options
|
||||
if self.args:
|
||||
opts.print_help()
|
||||
exit()
|
||||
|
||||
def setup( self ):
|
||||
"Setup and validate environment."
|
||||
|
||||
@@ -274,49 +238,26 @@ class MininetRunner( object ):
|
||||
% self.options.verbosity )
|
||||
lg.setLogLevel( self.options.verbosity )
|
||||
|
||||
# Maybe we'll reorganize this someday...
|
||||
# pylint: disable=too-many-branches,too-many-statements
|
||||
|
||||
def begin( self ):
|
||||
"Create and run mininet."
|
||||
|
||||
if self.options.cluster:
|
||||
servers = self.options.cluster.split( ',' )
|
||||
for server in servers:
|
||||
ClusterCleanup.add( server )
|
||||
|
||||
if self.options.clean:
|
||||
cleanup()
|
||||
exit()
|
||||
|
||||
start = time.time()
|
||||
|
||||
if not self.options.controller:
|
||||
# Update default based on available controllers
|
||||
CONTROLLERS[ 'default' ] = findController()
|
||||
self.options.controller = [ 'default' ]
|
||||
if not CONTROLLERS[ 'default' ]:
|
||||
self.options.controller = [ 'none' ]
|
||||
if self.options.switch == 'default':
|
||||
info( '*** No default OpenFlow controller found '
|
||||
'for default switch!\n' )
|
||||
info( '*** Falling back to OVS Bridge\n' )
|
||||
self.options.switch = 'ovsbr'
|
||||
elif self.options.switch not in ( 'ovsbr', 'lxbr' ):
|
||||
raise Exception( "Could not find a default controller "
|
||||
"for switch %s" %
|
||||
self.options.switch )
|
||||
|
||||
topo = buildTopo( TOPOS, self.options.topo )
|
||||
switch = customClass( SWITCHES, self.options.switch )
|
||||
host = customClass( HOSTS, self.options.host )
|
||||
controller = [ customClass( CONTROLLERS, c )
|
||||
for c in self.options.controller ]
|
||||
link = customClass( LINKS, self.options.link )
|
||||
topo = buildTopo( self.options.topo )
|
||||
switch = customNode( SWITCHES, self.options.switch )
|
||||
host = customNode( HOSTS, self.options.host )
|
||||
controller = customNode( CONTROLLERS, self.options.controller )
|
||||
link = customNode( LINKS, self.options.link )
|
||||
|
||||
if self.validate:
|
||||
self.validate( self.options )
|
||||
|
||||
inNamespace = self.options.innamespace
|
||||
Net = MininetWithControlNet if inNamespace else Mininet
|
||||
ipBase = self.options.ipbase
|
||||
xterms = self.options.xterms
|
||||
mac = self.options.mac
|
||||
@@ -325,22 +266,6 @@ class MininetRunner( object ):
|
||||
listenPort = None
|
||||
if not self.options.nolistenport:
|
||||
listenPort = self.options.listenport
|
||||
|
||||
# Handle inNamespace, cluster options
|
||||
inNamespace = self.options.innamespace
|
||||
cluster = self.options.cluster
|
||||
if inNamespace and cluster:
|
||||
print "Please specify --innamespace OR --cluster"
|
||||
exit()
|
||||
Net = MininetWithControlNet if inNamespace else Mininet
|
||||
cli = ClusterCLI if cluster else CLI
|
||||
if cluster:
|
||||
warn( '*** WARNING: Experimental cluster mode!\n'
|
||||
'*** Using RemoteHost, RemoteOVSSwitch, RemoteLink\n' )
|
||||
host, switch, link = RemoteHost, RemoteOVSSwitch, RemoteLink
|
||||
Net = partial( MininetCluster, servers=servers,
|
||||
placement=PLACEMENT[ self.options.placement ] )
|
||||
|
||||
mn = Net( topo=topo,
|
||||
switch=switch, host=host, controller=controller,
|
||||
link=link,
|
||||
@@ -350,13 +275,8 @@ class MininetRunner( object ):
|
||||
autoStaticArp=arp, autoPinCpus=pin,
|
||||
listenPort=listenPort )
|
||||
|
||||
if self.options.ensure_value( 'nat', False ):
|
||||
nat = mn.addNAT( *self.options.nat_args,
|
||||
**self.options.nat_kwargs )
|
||||
nat.configDefault()
|
||||
|
||||
if self.options.pre:
|
||||
cli( mn, script=self.options.pre )
|
||||
CLI( mn, script=self.options.pre )
|
||||
|
||||
test = self.options.test
|
||||
test = ALTSPELLING.get( test, test )
|
||||
@@ -366,18 +286,16 @@ class MininetRunner( object ):
|
||||
if test == 'none':
|
||||
pass
|
||||
elif test == 'all':
|
||||
mn.waitConnected()
|
||||
mn.start()
|
||||
mn.ping()
|
||||
mn.iperf()
|
||||
elif test == 'cli':
|
||||
cli( mn )
|
||||
CLI( mn )
|
||||
elif test != 'build':
|
||||
mn.waitConnected()
|
||||
getattr( mn, test )()
|
||||
|
||||
if self.options.post:
|
||||
cli( mn, script=self.options.post )
|
||||
CLI( mn, script=self.options.post )
|
||||
|
||||
mn.stop()
|
||||
|
||||
@@ -386,21 +304,4 @@ class MininetRunner( object ):
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
try:
|
||||
MininetRunner()
|
||||
except KeyboardInterrupt:
|
||||
info( "\n\nKeyboard Interrupt. Shutting down and cleaning up...\n\n")
|
||||
cleanup()
|
||||
except Exception:
|
||||
# Print exception
|
||||
type_, val_, trace_ = sys.exc_info()
|
||||
errorMsg = ( "-"*80 + "\n" +
|
||||
"Caught exception. Cleaning up...\n\n" +
|
||||
"%s: %s\n" % ( type_.__name__, val_ ) +
|
||||
"-"*80 + "\n" )
|
||||
error( errorMsg )
|
||||
# Print stack trace to debug log
|
||||
import traceback
|
||||
stackTrace = traceback.format_exc()
|
||||
debug( stackTrace + "\n" )
|
||||
cleanup()
|
||||
MininetRunner()
|
||||
|
||||
+24
-13
@@ -1,5 +1,7 @@
|
||||
"""Custom topology example
|
||||
|
||||
author: Brandon Heller (brandonh@stanford.edu)
|
||||
|
||||
Two directly connected switches plus a host for each switch:
|
||||
|
||||
host --- switch --- switch --- host
|
||||
@@ -8,27 +10,36 @@ Adding the 'topos' dict with a key/value pair to generate our newly defined
|
||||
topology enables one to pass in '--topo=mytopo' from the command line.
|
||||
"""
|
||||
|
||||
from mininet.topo import Topo
|
||||
from mininet.topo import Topo, Node
|
||||
|
||||
class MyTopo( Topo ):
|
||||
"Simple topology example."
|
||||
|
||||
def __init__( self ):
|
||||
def __init__( self, enable_all = True ):
|
||||
"Create custom topo."
|
||||
|
||||
# Initialize topology
|
||||
Topo.__init__( self )
|
||||
# Add default members to class.
|
||||
super( MyTopo, self ).__init__()
|
||||
|
||||
# Add hosts and switches
|
||||
leftHost = self.addHost( 'h1' )
|
||||
rightHost = self.addHost( 'h2' )
|
||||
leftSwitch = self.addSwitch( 's3' )
|
||||
rightSwitch = self.addSwitch( 's4' )
|
||||
# Set Node IDs for hosts and switches
|
||||
leftHost = 1
|
||||
leftSwitch = 2
|
||||
rightSwitch = 3
|
||||
rightHost = 4
|
||||
|
||||
# Add links
|
||||
self.addLink( leftHost, leftSwitch )
|
||||
self.addLink( leftSwitch, rightSwitch )
|
||||
self.addLink( rightSwitch, rightHost )
|
||||
# Add nodes
|
||||
self.add_node( leftSwitch, Node( is_switch=True ) )
|
||||
self.add_node( rightSwitch, Node( is_switch=True ) )
|
||||
self.add_node( leftHost, Node( is_switch=False ) )
|
||||
self.add_node( rightHost, Node( is_switch=False ) )
|
||||
|
||||
# Add edges
|
||||
self.add_edge( leftHost, leftSwitch )
|
||||
self.add_edge( leftSwitch, rightSwitch )
|
||||
self.add_edge( rightSwitch, rightHost )
|
||||
|
||||
# Consider all switches and hosts 'on'
|
||||
self.enable_all()
|
||||
|
||||
|
||||
topos = { 'mytopo': ( lambda: MyTopo() ) }
|
||||
|
||||
Vendored
-33
@@ -1,33 +0,0 @@
|
||||
mininet (2.1.0-0ubuntu1) saucy; urgency=low
|
||||
|
||||
* Add 2.1.0 final packaging
|
||||
|
||||
-- Bob Lantz <rlantz@cs.stanford.edu> Wed, 18 Sep 2013 22:43:47 -0700
|
||||
|
||||
mininet (2.1.0~rc1-0ubuntu1) saucy; urgency=low
|
||||
|
||||
* New upstream release candidate:
|
||||
- d/control: Drop dependency on python-networkx, add iperf, socat
|
||||
and cgroup-bin to Depends.
|
||||
|
||||
-- James Page <james.page@ubuntu.com> Wed, 28 Aug 2013 10:10:20 +0100
|
||||
|
||||
mininet (2.0.0-0ubuntu1) raring; urgency=low
|
||||
|
||||
* New upstream release.
|
||||
|
||||
-- James Page <james.page@ubuntu.com> Wed, 19 Dec 2012 15:48:01 +0000
|
||||
|
||||
mininet (2.0.0~rc1-0ubuntu1) quantal; urgency=low
|
||||
|
||||
* New upstream release.
|
||||
* Update copyright to match upstream release
|
||||
* Fix this message
|
||||
|
||||
-- Bob Lantz <rlantz@cs.stanford.edu> Sun, 18 Nov 2012 00:15:09 -0800
|
||||
|
||||
mininet (2.0.0~d4-0ubuntu1) quantal; urgency=low
|
||||
|
||||
* Initial release.
|
||||
|
||||
-- Bob Lantz <rlantz@cs.stanford.edu> Tue, 07 Aug 2012 14:11:27 -0700
|
||||
Vendored
-1
@@ -1 +0,0 @@
|
||||
9
|
||||
Vendored
-31
@@ -1,31 +0,0 @@
|
||||
Source: mininet
|
||||
Section: net
|
||||
Priority: extra
|
||||
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
|
||||
XSBC-Original-Maintainer: Bob Lantz <rlantz@cs.stanford.edu>
|
||||
Standards-Version: 3.9.3
|
||||
Build-Depends:
|
||||
debhelper (>= 9~),
|
||||
help2man,
|
||||
python-dev,
|
||||
python-pkg-resources,
|
||||
python-setuptools
|
||||
Homepage: http://openflow.org/mininet
|
||||
|
||||
Package: mininet
|
||||
Architecture: any
|
||||
Depends:
|
||||
openvswitch-switch,
|
||||
telnet,
|
||||
socat,
|
||||
iperf,
|
||||
cgroup-bin,
|
||||
${misc:Depends},
|
||||
${python:Depends},
|
||||
${shlibs:Depends}
|
||||
Recommends: openvswitch-controller
|
||||
Description: Process-based network emulator
|
||||
Mininet is a network emulator which uses lightweight
|
||||
virtualization to create virtual networks for rapid
|
||||
prototyping of Software-Defined Network (SDN) designs
|
||||
using OpenFlow.
|
||||
Vendored
-37
@@ -1,37 +0,0 @@
|
||||
Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0
|
||||
Upstream-Name: mininet
|
||||
Source: https://github.com/mininet/mininet
|
||||
|
||||
Files: *
|
||||
Copyright: 2012-2013 Open Networking Laboratory,
|
||||
2009-2012 Bob Lantz,
|
||||
2009-2012 The Board of Trustees of the Leland Stanford Junior
|
||||
University
|
||||
License:
|
||||
Original authors: Bob Lantz and Brandon Heller
|
||||
.
|
||||
We are making Mininet available for public use and benefit with the
|
||||
expectation that others will use, modify and enhance the Software and
|
||||
contribute those enhancements back to the community. However, since we
|
||||
would like to make the Software available for broadest use, with as few
|
||||
restrictions as possible permission is hereby granted, free of charge, to
|
||||
any person obtaining a copy of this Software to deal in the Software
|
||||
under the copyrights without restriction, including without limitation
|
||||
the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
and/or sell copies of the Software, and to permit persons to whom the
|
||||
Software is furnished to do so, subject to the following conditions:
|
||||
.
|
||||
The above copyright notice and this permission notice shall be included
|
||||
in all copies or substantial portions of the Software.
|
||||
.
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
||||
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
.
|
||||
The name and trademarks of copyright holder(s) may NOT be used in
|
||||
advertising or publicity pertaining to the Software or any derivatives
|
||||
without specific, written prior permission.
|
||||
Vendored
-1
@@ -1 +0,0 @@
|
||||
README.md
|
||||
Vendored
-1
@@ -1 +0,0 @@
|
||||
examples/*
|
||||
Vendored
-1
@@ -1 +0,0 @@
|
||||
mnexec /usr/bin
|
||||
Vendored
-1
@@ -1 +0,0 @@
|
||||
*.1
|
||||
Vendored
-12
@@ -1,12 +0,0 @@
|
||||
#!/usr/bin/make -f
|
||||
|
||||
%:
|
||||
dh $@ --buildsystem=python_distutils --with=python2
|
||||
|
||||
override_dh_auto_build:
|
||||
make man
|
||||
make mnexec
|
||||
dh_auto_build
|
||||
|
||||
get-orig-source:
|
||||
uscan --force-download --rename
|
||||
Vendored
-1
@@ -1 +0,0 @@
|
||||
3.0 (quilt)
|
||||
Vendored
-3
@@ -1,3 +0,0 @@
|
||||
version=3
|
||||
opts=filenamemangle=s/(.*)\/archive/$1/,uversionmangle=s/([abdr].*)\.tar\.gz/~$1/ \
|
||||
https://github.com/mininet/mininet/tags .*/archive\/(\d.*\.tar\.gz)
|
||||
@@ -25,7 +25,7 @@ DOXYFILE_ENCODING = UTF-8
|
||||
# The PROJECT_NAME tag is a single word (or a sequence of words surrounded
|
||||
# by quotes) that should identify the project.
|
||||
|
||||
PROJECT_NAME = "Mininet Python API Reference Manual"
|
||||
PROJECT_NAME = Mininet
|
||||
|
||||
# The PROJECT_NUMBER tag can be used to enter a project or revision number.
|
||||
# This could be handy for archiving the generated documentation or
|
||||
@@ -114,7 +114,7 @@ FULL_PATH_NAMES = YES
|
||||
# If left blank the directory from which doxygen is run is used as the
|
||||
# path to strip.
|
||||
|
||||
STRIP_FROM_PATH =
|
||||
STRIP_FROM_PATH =
|
||||
|
||||
# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of
|
||||
# the path mentioned in the documentation of a class, which tells
|
||||
@@ -919,7 +919,7 @@ COMPACT_LATEX = NO
|
||||
# by the printer. Possible values are: a4, a4wide, letter, legal and
|
||||
# executive. If left blank a4wide will be used.
|
||||
|
||||
PAPER_TYPE = letter
|
||||
PAPER_TYPE = a4wide
|
||||
|
||||
# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
|
||||
# packages that should be included in the LaTeX output.
|
||||
@@ -0,0 +1,79 @@
|
||||
|
||||
Mininet Examples
|
||||
|
||||
These examples are intended to help you get started using
|
||||
Mininet's Python API.
|
||||
|
||||
---
|
||||
|
||||
baresshd.py:
|
||||
|
||||
This example uses Mininet's medium-level API to create an sshd
|
||||
process running in a namespace. Doesn't use OpenFlow.
|
||||
|
||||
consoles.py:
|
||||
|
||||
This example creates a grid of console windows, one for each node,
|
||||
and allows interaction with and monitoring of each console, including
|
||||
graphical monitoring.
|
||||
|
||||
controllers.py:
|
||||
|
||||
This example creates a network and adds multiple controllers to it.
|
||||
|
||||
emptynet.py:
|
||||
|
||||
This example demonstrates creating an empty network (i.e. with no
|
||||
topology object) and adding nodes to it.
|
||||
|
||||
linearbandwidth.py:
|
||||
|
||||
This example shows how to create a custom topology programatically
|
||||
by subclassing Topo, and how to run a series of tests on it.
|
||||
|
||||
miniedit.py:
|
||||
|
||||
This example demonstrates creating a network via a graphical editor.
|
||||
|
||||
multiping.py:
|
||||
|
||||
This example demonstrates one method for
|
||||
monitoring output from multiple hosts, using node.monitor().
|
||||
|
||||
multipoll.py:
|
||||
|
||||
This example demonstrates monitoring output files from multiple hosts.
|
||||
|
||||
multitest.py:
|
||||
|
||||
This example creates a network and runs multiple tests on it.
|
||||
|
||||
scratchnet.py, scratchnetuser.py:
|
||||
|
||||
These two examples demonstrate how to create a network by using the lowest-
|
||||
level Mininet functions. Generally the higher-level API is easier to use,
|
||||
but scratchnet shows what is going on behind the scenes.
|
||||
|
||||
simpleperf.py:
|
||||
|
||||
A simple example of configuring network and CPU bandwidth limits.
|
||||
|
||||
sshd.py:
|
||||
|
||||
This example shows how to run an sshd process in each host, allowing
|
||||
you to log in via ssh. This requires connecting the Mininet data network
|
||||
to an interface in the root namespace (generaly the control network
|
||||
already lives in the root namespace, so it does not need to be explicitly
|
||||
connected.)
|
||||
|
||||
treeping64.py:
|
||||
|
||||
This example creates a 64-host tree network, and attempts to check full
|
||||
connectivity using ping, for different switch/datapath types.
|
||||
|
||||
tree1024.py:
|
||||
|
||||
This example attempts to create a 1024-host network, and then runs the
|
||||
CLI on it. It may run into scalability limits, depending on available
|
||||
memory and sysctl configuration (see INSTALL.)
|
||||
|
||||
@@ -1,179 +0,0 @@
|
||||
Mininet Examples
|
||||
========================================================
|
||||
|
||||
These examples are intended to help you get started using
|
||||
Mininet's Python API.
|
||||
|
||||
========================================================
|
||||
|
||||
#### baresshd.py:
|
||||
|
||||
This example uses Mininet's medium-level API to create an sshd
|
||||
process running in a namespace. Doesn't use OpenFlow.
|
||||
|
||||
#### bind.py:
|
||||
|
||||
This example shows how you can create private directories for each
|
||||
node in a Mininet topology.
|
||||
|
||||
#### cluster.py:
|
||||
|
||||
This example contains all of the code for experimental cluster
|
||||
edition. Remote classes and MininetCluster can be imported from
|
||||
here to create a topology with nodes on remote machines.
|
||||
|
||||
#### clusterSanity.py:
|
||||
|
||||
This example runs cluster edition locally as a sanity check to test
|
||||
basic functionality.
|
||||
|
||||
#### clustercli.py:
|
||||
|
||||
This example contains a CLI for experimental cluster edition.
|
||||
|
||||
#### clusterdemo.py:
|
||||
|
||||
This example is a basic demo of cluster edition on 3 servers with
|
||||
a tree topology of depth 3 and fanout 3.
|
||||
|
||||
#### consoles.py:
|
||||
|
||||
This example creates a grid of console windows, one for each node,
|
||||
and allows interaction with and monitoring of each console, including
|
||||
graphical monitoring.
|
||||
|
||||
#### controllers.py:
|
||||
|
||||
This example creates a network with multiple controllers, by
|
||||
using a custom `Switch()` subclass.
|
||||
|
||||
#### controllers2.py:
|
||||
|
||||
This example creates a network with multiple controllers by
|
||||
creating an empty network, adding nodes to it, and manually
|
||||
starting the switches.
|
||||
|
||||
#### controlnet.py:
|
||||
|
||||
This examples shows how you can model the control network as well
|
||||
as the data network, by actually creating two Mininet objects.
|
||||
|
||||
#### cpu.py:
|
||||
|
||||
This example tests iperf bandwidth for varying CPU limits.
|
||||
|
||||
#### emptynet.py:
|
||||
|
||||
This example demonstrates creating an empty network (i.e. with no
|
||||
topology object) and adding nodes to it.
|
||||
|
||||
#### hwintf.py:
|
||||
|
||||
This example shows how to add an interface (for example a real
|
||||
hardware interface) to a network after the network is created.
|
||||
|
||||
#### intfoptions.py:
|
||||
|
||||
This example reconfigures a TCIntf during runtime with different
|
||||
traffic control commands to test bandwidth, loss, and delay.
|
||||
|
||||
#### limit.py:
|
||||
|
||||
This example shows how to use link and CPU limits.
|
||||
|
||||
#### linearbandwidth.py:
|
||||
|
||||
This example shows how to create a custom topology programatically
|
||||
by subclassing Topo, and how to run a series of tests on it.
|
||||
|
||||
#### linuxrouter.py:
|
||||
|
||||
This example shows how to create and configure a router in Mininet
|
||||
that uses Linux IP forwarding.
|
||||
|
||||
#### miniedit.py:
|
||||
|
||||
This example demonstrates creating a network via a graphical editor.
|
||||
|
||||
#### mobility.py:
|
||||
|
||||
This example demonstrates detaching an interface from one switch and
|
||||
attaching it another as a basic way to move a host around a network.
|
||||
|
||||
#### multiLink.py:
|
||||
|
||||
This example demonstrates the creation of multiple links between
|
||||
nodes using a custom Topology class.
|
||||
|
||||
#### multiping.py:
|
||||
|
||||
This example demonstrates one method for
|
||||
monitoring output from multiple hosts, using `node.monitor()`.
|
||||
|
||||
#### multipoll.py:
|
||||
|
||||
This example demonstrates monitoring output files from multiple hosts.
|
||||
|
||||
#### multitest.py:
|
||||
|
||||
This example creates a network and runs multiple tests on it.
|
||||
|
||||
#### nat.py:
|
||||
|
||||
This example shows how to connect a Mininet network to the Internet
|
||||
using NAT. It also answers the eternal question "why can't I ping
|
||||
`google.com`?"
|
||||
|
||||
#### natnet.py:
|
||||
|
||||
This example demonstrates how to create a network using a NAT node
|
||||
to connect hosts to the internet.
|
||||
|
||||
#### numberedports.py:
|
||||
|
||||
This example verifies the mininet ofport numbers match up to the ovs port numbers.
|
||||
It also verifies that the port numbers match up to the interface numbers
|
||||
|
||||
#### popen.py:
|
||||
|
||||
This example monitors a number of hosts using `host.popen()` and
|
||||
`pmonitor()`.
|
||||
|
||||
#### popenpoll.py:
|
||||
|
||||
This example demonstrates monitoring output from multiple hosts using
|
||||
the `node.popen()` interface (which returns `Popen` objects) and `pmonitor()`.
|
||||
|
||||
#### scratchnet.py, scratchnetuser.py:
|
||||
|
||||
These two examples demonstrate how to create a network by using the lowest-
|
||||
level Mininet functions. Generally the higher-level API is easier to use,
|
||||
but scratchnet shows what is going on behind the scenes.
|
||||
|
||||
#### simpleperf.py:
|
||||
|
||||
A simple example of configuring network and CPU bandwidth limits.
|
||||
|
||||
#### sshd.py:
|
||||
|
||||
This example shows how to run an `sshd` process in each host, allowing
|
||||
you to log in via `ssh`. This requires connecting the Mininet data network
|
||||
to an interface in the root namespace (generaly the control network
|
||||
already lives in the root namespace, so it does not need to be explicitly
|
||||
connected.)
|
||||
|
||||
#### tree1024.py:
|
||||
|
||||
This example attempts to create a 1024-host network, and then runs the
|
||||
CLI on it. It may run into scalability limits, depending on available
|
||||
memory and `sysctl` configuration (see `INSTALL`.)
|
||||
|
||||
#### treeping64.py:
|
||||
|
||||
This example creates a 64-host tree network, and attempts to check full
|
||||
connectivity using `ping`, for different switch/datapath types.
|
||||
|
||||
#### vlanhost.py:
|
||||
|
||||
An example of how to subclass Host to use a VLAN on its primary interface.
|
||||
|
||||
@@ -1,4 +0,0 @@
|
||||
"""
|
||||
Mininet Examples
|
||||
See README for details
|
||||
"""
|
||||
+2
-16
@@ -2,12 +2,7 @@
|
||||
|
||||
"This example doesn't use OpenFlow, but attempts to run sshd in a namespace."
|
||||
|
||||
import sys
|
||||
from mininet.node import Host
|
||||
from mininet.util import ensureRoot, waitListening
|
||||
|
||||
ensureRoot()
|
||||
timeout = 5
|
||||
|
||||
print "*** Creating nodes"
|
||||
h1 = Host( 'h1' )
|
||||
@@ -29,15 +24,6 @@ f.write( 'Welcome to %s at %s\n' % ( h1.name, h1.IP() ) )
|
||||
f.close()
|
||||
|
||||
print "*** Running sshd"
|
||||
cmd = '/usr/sbin/sshd -o UseDNS=no -u0 -o "Banner /tmp/%s.banner"' % h1.name
|
||||
# add arguments from the command line
|
||||
if len( sys.argv ) > 1:
|
||||
cmd += ' ' + ' '.join( sys.argv[ 1: ] )
|
||||
h1.cmd( cmd )
|
||||
listening = waitListening( server=h1, port=22, timeout=timeout )
|
||||
h1.cmd( '/usr/sbin/sshd -o "Banner /tmp/%s.banner"' % h1.name )
|
||||
|
||||
if listening:
|
||||
print "*** You may now ssh into", h1.name, "at", h1.IP()
|
||||
else:
|
||||
print ( "*** Warning: after %s seconds, %s is not listening on port 22"
|
||||
% ( timeout, h1.name ) )
|
||||
print "*** You may now ssh into", h1.name, "at", h1.IP()
|
||||
|
||||
@@ -1,67 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
bind.py: Bind mount example
|
||||
|
||||
This creates hosts with private directories that the user specifies.
|
||||
These hosts may have persistent directories that will be available
|
||||
across multiple mininet session, or temporary directories that will
|
||||
only last for one mininet session. To specify a persistent
|
||||
directory, add a tuple to a list of private directories:
|
||||
|
||||
[ ( 'directory to be mounted on', 'directory to be mounted' ) ]
|
||||
|
||||
String expansion may be used to create a directory template for
|
||||
each host. To do this, add a %(name)s in place of the host name
|
||||
when creating your list of directories:
|
||||
|
||||
[ ( '/var/run', '/tmp/%(name)s/var/run' ) ]
|
||||
|
||||
If no persistent directory is specified, the directories will default
|
||||
to temporary private directories. To do this, simply create a list of
|
||||
directories to be made private. A tmpfs will then be mounted on them.
|
||||
|
||||
You may use both temporary and persistent directories at the same
|
||||
time. In the following privateDirs string, each host will have a
|
||||
persistent directory in the root filesystem at
|
||||
"/tmp/(hostname)/var/run" mounted on "/var/run". Each host will also
|
||||
have a temporary private directory mounted on "/var/log".
|
||||
|
||||
[ ( '/var/run', '/tmp/%(name)s/var/run' ), '/var/log' ]
|
||||
|
||||
This example has both persistent directories mounted on '/var/log'
|
||||
and '/var/run'. It also has a temporary private directory mounted
|
||||
on '/var/mn'
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import Host
|
||||
from mininet.cli import CLI
|
||||
from mininet.topo import SingleSwitchTopo
|
||||
from mininet.log import setLogLevel, info
|
||||
|
||||
from functools import partial
|
||||
|
||||
|
||||
# Sample usage
|
||||
|
||||
def testHostWithPrivateDirs():
|
||||
"Test bind mounts"
|
||||
topo = SingleSwitchTopo( 10 )
|
||||
privateDirs = [ ( '/var/log', '/tmp/%(name)s/var/log' ),
|
||||
( '/var/run', '/tmp/%(name)s/var/run' ),
|
||||
'/var/mn' ]
|
||||
host = partial( Host,
|
||||
privateDirs=privateDirs )
|
||||
net = Mininet( topo=topo, host=host )
|
||||
net.start()
|
||||
directories = [ directory[ 0 ] if isinstance( directory, tuple )
|
||||
else directory for directory in privateDirs ]
|
||||
info( 'Private Directories:', directories, '\n' )
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
testHostWithPrivateDirs()
|
||||
info( 'Done.\n')
|
||||
@@ -1,914 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
cluster.py: prototyping/experimentation for distributed Mininet,
|
||||
aka Mininet: Cluster Edition
|
||||
|
||||
Author: Bob Lantz
|
||||
|
||||
Core classes:
|
||||
|
||||
RemoteNode: a Node() running on a remote server
|
||||
RemoteOVSSwitch(): an OVSSwitch() running on a remote server
|
||||
RemoteLink: a Link() on a remote server
|
||||
Tunnel: a Link() between a local Node() and a RemoteNode()
|
||||
|
||||
These are largely interoperable with local objects.
|
||||
|
||||
- One Mininet to rule them all
|
||||
|
||||
It is important that the same topologies, APIs, and CLI can be used
|
||||
with minimal or no modification in both local and distributed environments.
|
||||
|
||||
- Multiple placement models
|
||||
|
||||
Placement should be as easy as possible. We should provide basic placement
|
||||
support and also allow for explicit placement.
|
||||
|
||||
Questions:
|
||||
|
||||
What is the basic communication mechanism?
|
||||
|
||||
To start with? Probably a single multiplexed ssh connection between each
|
||||
pair of mininet servers that needs to communicate.
|
||||
|
||||
How are tunnels created?
|
||||
|
||||
We have several options including ssh, GRE, OF capsulator, socat, VDE, l2tp,
|
||||
etc.. It's not clear what the best one is. For now, we use ssh tunnels since
|
||||
they are encrypted and semi-automatically shared. We will probably want to
|
||||
support GRE as well because it's very easy to set up with OVS.
|
||||
|
||||
How are tunnels destroyed?
|
||||
|
||||
They are destroyed when the links are deleted in Mininet.stop()
|
||||
|
||||
How does RemoteNode.popen() work?
|
||||
|
||||
It opens a shared ssh connection to the remote server and attaches to
|
||||
the namespace using mnexec -a -g.
|
||||
|
||||
Is there any value to using Paramiko vs. raw ssh?
|
||||
|
||||
Maybe, but it doesn't seem to support L2 tunneling.
|
||||
|
||||
Should we preflight the entire network, including all server-to-server
|
||||
connections?
|
||||
|
||||
Yes! We don't yet do this with remote server-to-server connections yet.
|
||||
|
||||
Should we multiplex the link ssh connections?
|
||||
|
||||
Yes, this is done automatically with ControlMaster=auto.
|
||||
|
||||
Note on ssh and DNS:
|
||||
Please add UseDNS: no to your /etc/ssh/sshd_config!!!
|
||||
|
||||
Things to do:
|
||||
|
||||
- asynchronous/pipelined/parallel startup
|
||||
- ssh debugging/profiling
|
||||
- make connections into real objects
|
||||
- support for other tunneling schemes
|
||||
- tests and benchmarks
|
||||
- hifi support (e.g. delay compensation)
|
||||
"""
|
||||
|
||||
from mininet.node import Node, Host, OVSSwitch, Controller
|
||||
from mininet.link import Link, Intf
|
||||
from mininet.net import Mininet
|
||||
from mininet.topo import LinearTopo
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.util import quietRun, errRun
|
||||
from mininet.examples.clustercli import CLI
|
||||
from mininet.log import setLogLevel, debug, info, error
|
||||
from mininet.clean import addCleanupCallback
|
||||
|
||||
from signal import signal, SIGINT, SIG_IGN
|
||||
from subprocess import Popen, PIPE, STDOUT
|
||||
import os
|
||||
from random import randrange
|
||||
import sys
|
||||
import re
|
||||
from itertools import groupby
|
||||
from operator import attrgetter
|
||||
from distutils.version import StrictVersion
|
||||
|
||||
|
||||
def findUser():
|
||||
"Try to return logged-in (usually non-root) user"
|
||||
return (
|
||||
# If we're running sudo
|
||||
os.environ.get( 'SUDO_USER', False ) or
|
||||
# Logged-in user (if we have a tty)
|
||||
( quietRun( 'who am i' ).split() or [ False ] )[ 0 ] or
|
||||
# Give up and return effective user
|
||||
quietRun( 'whoami' ) )
|
||||
|
||||
|
||||
class ClusterCleanup( object ):
|
||||
"Cleanup callback"
|
||||
|
||||
inited = False
|
||||
serveruser = {}
|
||||
|
||||
@classmethod
|
||||
def add( cls, server, user='' ):
|
||||
"Add an entry to server: user dict"
|
||||
if not cls.inited:
|
||||
addCleanupCallback( cls.cleanup )
|
||||
if not user:
|
||||
user = findUser()
|
||||
cls.serveruser[ server ] = user
|
||||
|
||||
@classmethod
|
||||
def cleanup( cls ):
|
||||
"Clean up"
|
||||
info( '*** Cleaning up cluster\n' )
|
||||
for server, user in cls.serveruser.iteritems():
|
||||
if server == 'localhost':
|
||||
# Handled by mininet.clean.cleanup()
|
||||
continue
|
||||
else:
|
||||
cmd = [ 'su', user, '-c',
|
||||
'ssh %s@%s sudo mn -c' % ( user, server ) ]
|
||||
info( cmd, '\n' )
|
||||
info( quietRun( cmd ) )
|
||||
|
||||
# BL note: so little code is required for remote nodes,
|
||||
# we will probably just want to update the main Node()
|
||||
# class to enable it for remote access! However, there
|
||||
# are a large number of potential failure conditions with
|
||||
# remote nodes which we may want to detect and handle.
|
||||
# Another interesting point is that we could put everything
|
||||
# in a mix-in class and easily add cluster mode to 2.0.
|
||||
|
||||
class RemoteMixin( object ):
|
||||
|
||||
"A mix-in class to turn local nodes into remote nodes"
|
||||
|
||||
# ssh base command
|
||||
# -q: don't print stupid diagnostic messages
|
||||
# BatchMode yes: don't ask for password
|
||||
# ForwardAgent yes: forward authentication credentials
|
||||
sshbase = [ 'ssh', '-q',
|
||||
'-o', 'BatchMode=yes',
|
||||
'-o', 'ForwardAgent=yes', '-tt' ]
|
||||
|
||||
def __init__( self, name, server='localhost', user=None, serverIP=None,
|
||||
controlPath=False, splitInit=False, **kwargs):
|
||||
"""Instantiate a remote node
|
||||
name: name of remote node
|
||||
server: remote server (optional)
|
||||
user: user on remote server (optional)
|
||||
controlPath: specify shared ssh control path (optional)
|
||||
splitInit: split initialization?
|
||||
**kwargs: see Node()"""
|
||||
# We connect to servers by IP address
|
||||
self.server = server if server else 'localhost'
|
||||
self.serverIP = ( serverIP if serverIP
|
||||
else self.findServerIP( self.server ) )
|
||||
self.user = user if user else findUser()
|
||||
ClusterCleanup.add( server=server, user=user )
|
||||
if controlPath is True:
|
||||
# Set a default control path for shared SSH connections
|
||||
controlPath = '/tmp/mn-%r@%h:%p'
|
||||
self.controlPath = controlPath
|
||||
self.splitInit = splitInit
|
||||
if self.user and self.server != 'localhost':
|
||||
self.dest = '%s@%s' % ( self.user, self.serverIP )
|
||||
self.sshcmd = [ 'sudo', '-E', '-u', self.user ] + self.sshbase
|
||||
if self.controlPath:
|
||||
self.sshcmd += [ '-o', 'ControlPath=' + self.controlPath,
|
||||
'-o', 'ControlMaster=auto',
|
||||
'-o', 'ControlPersist=' + '1' ]
|
||||
self.sshcmd += [ self.dest ]
|
||||
self.isRemote = True
|
||||
else:
|
||||
self.dest = None
|
||||
self.sshcmd = []
|
||||
self.isRemote = False
|
||||
# Satisfy pylint
|
||||
self.shell, self.pid = None, None
|
||||
super( RemoteMixin, self ).__init__( name, **kwargs )
|
||||
|
||||
# Determine IP address of local host
|
||||
_ipMatchRegex = re.compile( r'\d+\.\d+\.\d+\.\d+' )
|
||||
|
||||
@classmethod
|
||||
def findServerIP( cls, server ):
|
||||
"Return our server's IP address"
|
||||
# First, check for an IP address
|
||||
ipmatch = cls._ipMatchRegex.findall( server )
|
||||
if ipmatch:
|
||||
return ipmatch[ 0 ]
|
||||
# Otherwise, look up remote server
|
||||
output = quietRun( 'getent ahostsv4 %s' % server )
|
||||
ips = cls._ipMatchRegex.findall( output )
|
||||
ip = ips[ 0 ] if ips else None
|
||||
return ip
|
||||
|
||||
# Command support via shell process in namespace
|
||||
def startShell( self, *args, **kwargs ):
|
||||
"Start a shell process for running commands"
|
||||
if self.isRemote:
|
||||
kwargs.update( mnopts='-c' )
|
||||
super( RemoteMixin, self ).startShell( *args, **kwargs )
|
||||
# Optional split initialization
|
||||
self.sendCmd( 'echo $$' )
|
||||
if not self.splitInit:
|
||||
self.finishInit()
|
||||
|
||||
def finishInit( self ):
|
||||
"Wait for split initialization to complete"
|
||||
self.pid = int( self.waitOutput() )
|
||||
|
||||
def rpopen( self, *cmd, **opts ):
|
||||
"Return a Popen object on underlying server in root namespace"
|
||||
params = { 'stdin': PIPE,
|
||||
'stdout': PIPE,
|
||||
'stderr': STDOUT,
|
||||
'sudo': True }
|
||||
params.update( opts )
|
||||
return self._popen( *cmd, **params )
|
||||
|
||||
def rcmd( self, *cmd, **opts):
|
||||
"""rcmd: run a command on underlying server
|
||||
in root namespace
|
||||
args: string or list of strings
|
||||
returns: stdout and stderr"""
|
||||
popen = self.rpopen( *cmd, **opts )
|
||||
# print 'RCMD: POPEN:', popen
|
||||
# These loops are tricky to get right.
|
||||
# Once the process exits, we can read
|
||||
# EOF twice if necessary.
|
||||
result = ''
|
||||
while True:
|
||||
poll = popen.poll()
|
||||
result += popen.stdout.read()
|
||||
if poll is not None:
|
||||
break
|
||||
return result
|
||||
|
||||
@staticmethod
|
||||
def _ignoreSignal():
|
||||
"Detach from process group to ignore all signals"
|
||||
os.setpgrp()
|
||||
|
||||
def _popen( self, cmd, sudo=True, tt=True, **params):
|
||||
"""Spawn a process on a remote node
|
||||
cmd: remote command to run (list)
|
||||
**params: parameters to Popen()
|
||||
returns: Popen() object"""
|
||||
if type( cmd ) is str:
|
||||
cmd = cmd.split()
|
||||
if self.isRemote:
|
||||
if sudo:
|
||||
cmd = [ 'sudo', '-E' ] + cmd
|
||||
if tt:
|
||||
cmd = self.sshcmd + cmd
|
||||
else:
|
||||
# Hack: remove -tt
|
||||
sshcmd = list( self.sshcmd )
|
||||
sshcmd.remove( '-tt' )
|
||||
cmd = sshcmd + cmd
|
||||
else:
|
||||
if self.user and not sudo:
|
||||
# Drop privileges
|
||||
cmd = [ 'sudo', '-E', '-u', self.user ] + cmd
|
||||
params.update( preexec_fn=self._ignoreSignal )
|
||||
debug( '_popen', cmd, '\n' )
|
||||
popen = super( RemoteMixin, self )._popen( cmd, **params )
|
||||
return popen
|
||||
|
||||
def popen( self, *args, **kwargs ):
|
||||
"Override: disable -tt"
|
||||
return super( RemoteMixin, self).popen( *args, tt=False, **kwargs )
|
||||
|
||||
def addIntf( self, *args, **kwargs ):
|
||||
"Override: use RemoteLink.moveIntf"
|
||||
kwargs.update( moveIntfFn=RemoteLink.moveIntf )
|
||||
return super( RemoteMixin, self).addIntf( *args, **kwargs )
|
||||
|
||||
|
||||
class RemoteNode( RemoteMixin, Node ):
|
||||
"A node on a remote server"
|
||||
pass
|
||||
|
||||
|
||||
class RemoteHost( RemoteNode ):
|
||||
"A RemoteHost is simply a RemoteNode"
|
||||
pass
|
||||
|
||||
|
||||
class RemoteOVSSwitch( RemoteMixin, OVSSwitch ):
|
||||
"Remote instance of Open vSwitch"
|
||||
|
||||
OVSVersions = {}
|
||||
|
||||
def __init__( self, *args, **kwargs ):
|
||||
# No batch startup yet
|
||||
kwargs.update( batch=True )
|
||||
super( RemoteOVSSwitch, self ).__init__( *args, **kwargs )
|
||||
|
||||
def isOldOVS( self ):
|
||||
"Is remote switch using an old OVS version?"
|
||||
cls = type( self )
|
||||
if self.server not in cls.OVSVersions:
|
||||
# pylint: disable=not-callable
|
||||
vers = self.cmd( 'ovs-vsctl --version' )
|
||||
# pylint: enable=not-callable
|
||||
cls.OVSVersions[ self.server ] = re.findall(
|
||||
r'\d+\.\d+', vers )[ 0 ]
|
||||
return ( StrictVersion( cls.OVSVersions[ self.server ] ) <
|
||||
StrictVersion( '1.10' ) )
|
||||
|
||||
@classmethod
|
||||
def batchStartup( cls, switches, **_kwargs ):
|
||||
"Start up switches in per-server batches"
|
||||
key = attrgetter( 'server' )
|
||||
for server, switchGroup in groupby( sorted( switches, key=key ), key ):
|
||||
info( '(%s)' % server )
|
||||
group = tuple( switchGroup )
|
||||
switch = group[ 0 ]
|
||||
OVSSwitch.batchStartup( group, run=switch.cmd )
|
||||
return switches
|
||||
|
||||
@classmethod
|
||||
def batchShutdown( cls, switches, **_kwargs ):
|
||||
"Stop switches in per-server batches"
|
||||
key = attrgetter( 'server' )
|
||||
for server, switchGroup in groupby( sorted( switches, key=key ), key ):
|
||||
info( '(%s)' % server )
|
||||
group = tuple( switchGroup )
|
||||
switch = group[ 0 ]
|
||||
OVSSwitch.batchShutdown( group, run=switch.rcmd )
|
||||
return switches
|
||||
|
||||
|
||||
class RemoteLink( Link ):
|
||||
"A RemoteLink is a link between nodes which may be on different servers"
|
||||
|
||||
def __init__( self, node1, node2, **kwargs ):
|
||||
"""Initialize a RemoteLink
|
||||
see Link() for parameters"""
|
||||
# Create links on remote node
|
||||
self.node1 = node1
|
||||
self.node2 = node2
|
||||
self.tunnel = None
|
||||
kwargs.setdefault( 'params1', {} )
|
||||
kwargs.setdefault( 'params2', {} )
|
||||
self.cmd = None # satisfy pylint
|
||||
Link.__init__( self, node1, node2, **kwargs )
|
||||
|
||||
def stop( self ):
|
||||
"Stop this link"
|
||||
if self.tunnel:
|
||||
self.tunnel.terminate()
|
||||
self.intf1.delete()
|
||||
self.intf2.delete()
|
||||
else:
|
||||
Link.stop( self )
|
||||
self.tunnel = None
|
||||
|
||||
def makeIntfPair( self, intfname1, intfname2, addr1=None, addr2=None,
|
||||
node1=None, node2=None, deleteIntfs=True ):
|
||||
"""Create pair of interfaces
|
||||
intfname1: name of interface 1
|
||||
intfname2: name of interface 2
|
||||
(override this method [and possibly delete()]
|
||||
to change link type)"""
|
||||
node1 = self.node1 if node1 is None else node1
|
||||
node2 = self.node2 if node2 is None else node2
|
||||
server1 = getattr( node1, 'server', 'localhost' )
|
||||
server2 = getattr( node2, 'server', 'localhost' )
|
||||
if server1 == server2:
|
||||
# Link within same server
|
||||
return Link.makeIntfPair( intfname1, intfname2, addr1, addr2,
|
||||
node1, node2, deleteIntfs=deleteIntfs )
|
||||
# Otherwise, make a tunnel
|
||||
self.tunnel = self.makeTunnel( node1, node2, intfname1, intfname2,
|
||||
addr1, addr2 )
|
||||
return self.tunnel
|
||||
|
||||
@staticmethod
|
||||
def moveIntf( intf, node, printError=True ):
|
||||
"""Move remote interface from root ns to node
|
||||
intf: string, interface
|
||||
dstNode: destination Node
|
||||
srcNode: source Node or None (default) for root ns
|
||||
printError: if true, print error"""
|
||||
intf = str( intf )
|
||||
cmd = 'ip link set %s netns %s' % ( intf, node.pid )
|
||||
node.rcmd( cmd )
|
||||
links = node.cmd( 'ip link show' )
|
||||
if not ' %s:' % intf in links:
|
||||
if printError:
|
||||
error( '*** Error: RemoteLink.moveIntf: ' + intf +
|
||||
' not successfully moved to ' + node.name + '\n' )
|
||||
return False
|
||||
return True
|
||||
|
||||
def makeTunnel( self, node1, node2, intfname1, intfname2,
|
||||
addr1=None, addr2=None ):
|
||||
"Make a tunnel across switches on different servers"
|
||||
# We should never try to create a tunnel to ourselves!
|
||||
assert node1.server != 'localhost' or node2.server != 'localhost'
|
||||
# And we can't ssh into this server remotely as 'localhost',
|
||||
# so try again swappping node1 and node2
|
||||
if node2.server == 'localhost':
|
||||
return self.makeTunnel( node2, node1, intfname2, intfname1,
|
||||
addr2, addr1 )
|
||||
# 1. Create tap interfaces
|
||||
for node in node1, node2:
|
||||
# For now we are hard-wiring tap9, which we will rename
|
||||
cmd = 'ip tuntap add dev tap9 mode tap user ' + node.user
|
||||
result = node.rcmd( cmd )
|
||||
if result:
|
||||
raise Exception( 'error creating tap9 on %s: %s' %
|
||||
( node, result ) )
|
||||
# 2. Create ssh tunnel between tap interfaces
|
||||
# -n: close stdin
|
||||
dest = '%s@%s' % ( node2.user, node2.serverIP )
|
||||
cmd = [ 'ssh', '-n', '-o', 'Tunnel=Ethernet', '-w', '9:9',
|
||||
dest, 'echo @' ]
|
||||
self.cmd = cmd
|
||||
tunnel = node1.rpopen( cmd, sudo=False )
|
||||
# When we receive the character '@', it means that our
|
||||
# tunnel should be set up
|
||||
debug( 'Waiting for tunnel to come up...\n' )
|
||||
ch = tunnel.stdout.read( 1 )
|
||||
if ch != '@':
|
||||
raise Exception( 'makeTunnel:\n',
|
||||
'Tunnel setup failed for',
|
||||
'%s:%s' % ( node1, node1.dest ), 'to',
|
||||
'%s:%s\n' % ( node2, node2.dest ),
|
||||
'command was:', cmd, '\n' )
|
||||
# 3. Move interfaces if necessary
|
||||
for node in node1, node2:
|
||||
if not self.moveIntf( 'tap9', node ):
|
||||
raise Exception( 'interface move failed on node %s' % node )
|
||||
# 4. Rename tap interfaces to desired names
|
||||
for node, intf, addr in ( ( node1, intfname1, addr1 ),
|
||||
( node2, intfname2, addr2 ) ):
|
||||
if not addr:
|
||||
result = node.cmd( 'ip link set tap9 name', intf )
|
||||
else:
|
||||
result = node.cmd( 'ip link set tap9 name', intf,
|
||||
'address', addr )
|
||||
if result:
|
||||
raise Exception( 'error renaming %s: %s' % ( intf, result ) )
|
||||
return tunnel
|
||||
|
||||
def status( self ):
|
||||
"Detailed representation of link"
|
||||
if self.tunnel:
|
||||
if self.tunnel.poll() is not None:
|
||||
status = "Tunnel EXITED %s" % self.tunnel.returncode
|
||||
else:
|
||||
status = "Tunnel Running (%s: %s)" % (
|
||||
self.tunnel.pid, self.cmd )
|
||||
else:
|
||||
status = "OK"
|
||||
result = "%s %s" % ( Link.status( self ), status )
|
||||
return result
|
||||
|
||||
|
||||
# Some simple placement algorithms for MininetCluster
|
||||
|
||||
class Placer( object ):
|
||||
"Node placement algorithm for MininetCluster"
|
||||
|
||||
def __init__( self, servers=None, nodes=None, hosts=None,
|
||||
switches=None, controllers=None, links=None ):
|
||||
"""Initialize placement object
|
||||
servers: list of servers
|
||||
nodes: list of all nodes
|
||||
hosts: list of hosts
|
||||
switches: list of switches
|
||||
controllers: list of controllers
|
||||
links: list of links
|
||||
(all arguments are optional)
|
||||
returns: server"""
|
||||
self.servers = servers or []
|
||||
self.nodes = nodes or []
|
||||
self.hosts = hosts or []
|
||||
self.switches = switches or []
|
||||
self.controllers = controllers or []
|
||||
self.links = links or []
|
||||
|
||||
def place( self, node ):
|
||||
"Return server for a given node"
|
||||
assert self, node # satisfy pylint
|
||||
# Default placement: run locally
|
||||
return 'localhost'
|
||||
|
||||
|
||||
class RandomPlacer( Placer ):
|
||||
"Random placement"
|
||||
def place( self, nodename ):
|
||||
"""Random placement function
|
||||
nodename: node name"""
|
||||
assert nodename # please pylint
|
||||
# This may be slow with lots of servers
|
||||
return self.servers[ randrange( 0, len( self.servers ) ) ]
|
||||
|
||||
|
||||
class RoundRobinPlacer( Placer ):
|
||||
"""Round-robin placement
|
||||
Note this will usually result in cross-server links between
|
||||
hosts and switches"""
|
||||
|
||||
def __init__( self, *args, **kwargs ):
|
||||
Placer.__init__( self, *args, **kwargs )
|
||||
self.next = 0
|
||||
|
||||
def place( self, nodename ):
|
||||
"""Round-robin placement function
|
||||
nodename: node name"""
|
||||
assert nodename # please pylint
|
||||
# This may be slow with lots of servers
|
||||
server = self.servers[ self.next ]
|
||||
self.next = ( self.next + 1 ) % len( self.servers )
|
||||
return server
|
||||
|
||||
|
||||
class SwitchBinPlacer( Placer ):
|
||||
"""Place switches (and controllers) into evenly-sized bins,
|
||||
and attempt to co-locate hosts and switches"""
|
||||
|
||||
def __init__( self, *args, **kwargs ):
|
||||
Placer.__init__( self, *args, **kwargs )
|
||||
# Easy lookup for servers and node sets
|
||||
self.servdict = dict( enumerate( self.servers ) )
|
||||
self.hset = frozenset( self.hosts )
|
||||
self.sset = frozenset( self.switches )
|
||||
self.cset = frozenset( self.controllers )
|
||||
# Server and switch placement indices
|
||||
self.placement = self.calculatePlacement()
|
||||
|
||||
@staticmethod
|
||||
def bin( nodes, servers ):
|
||||
"Distribute nodes evenly over servers"
|
||||
# Calculate base bin size
|
||||
nlen = len( nodes )
|
||||
slen = len( servers )
|
||||
# Basic bin size
|
||||
quotient = int( nlen / slen )
|
||||
binsizes = { server: quotient for server in servers }
|
||||
# Distribute remainder
|
||||
remainder = nlen % slen
|
||||
for server in servers[ 0 : remainder ]:
|
||||
binsizes[ server ] += 1
|
||||
# Create binsize[ server ] tickets for each server
|
||||
tickets = sum( [ binsizes[ server ] * [ server ]
|
||||
for server in servers ], [] )
|
||||
# And assign one ticket to each node
|
||||
return { node: ticket for node, ticket in zip( nodes, tickets ) }
|
||||
|
||||
def calculatePlacement( self ):
|
||||
"Pre-calculate node placement"
|
||||
placement = {}
|
||||
# Create host-switch connectivity map,
|
||||
# associating host with last switch that it's
|
||||
# connected to
|
||||
switchFor = {}
|
||||
for src, dst in self.links:
|
||||
if src in self.hset and dst in self.sset:
|
||||
switchFor[ src ] = dst
|
||||
if dst in self.hset and src in self.sset:
|
||||
switchFor[ dst ] = src
|
||||
# Place switches
|
||||
placement = self.bin( self.switches, self.servers )
|
||||
# Place controllers and merge into placement dict
|
||||
placement.update( self.bin( self.controllers, self.servers ) )
|
||||
# Co-locate hosts with their switches
|
||||
for h in self.hosts:
|
||||
if h in placement:
|
||||
# Host is already placed - leave it there
|
||||
continue
|
||||
if h in switchFor:
|
||||
placement[ h ] = placement[ switchFor[ h ] ]
|
||||
else:
|
||||
raise Exception(
|
||||
"SwitchBinPlacer: cannot place isolated host " + h )
|
||||
return placement
|
||||
|
||||
def place( self, node ):
|
||||
"""Simple placement algorithm:
|
||||
place switches into evenly sized bins,
|
||||
and place hosts near their switches"""
|
||||
return self.placement[ node ]
|
||||
|
||||
|
||||
class HostSwitchBinPlacer( Placer ):
|
||||
"""Place switches *and hosts* into evenly-sized bins
|
||||
Note that this will usually result in cross-server
|
||||
links between hosts and switches"""
|
||||
|
||||
def __init__( self, *args, **kwargs ):
|
||||
Placer.__init__( self, *args, **kwargs )
|
||||
# Calculate bin sizes
|
||||
scount = len( self.servers )
|
||||
self.hbin = max( int( len( self.hosts ) / scount ), 1 )
|
||||
self.sbin = max( int( len( self.switches ) / scount ), 1 )
|
||||
self.cbin = max( int( len( self.controllers ) / scount ), 1 )
|
||||
info( 'scount:', scount )
|
||||
info( 'bins:', self.hbin, self.sbin, self.cbin, '\n' )
|
||||
self.servdict = dict( enumerate( self.servers ) )
|
||||
self.hset = frozenset( self.hosts )
|
||||
self.sset = frozenset( self.switches )
|
||||
self.cset = frozenset( self.controllers )
|
||||
self.hind, self.sind, self.cind = 0, 0, 0
|
||||
|
||||
def place( self, nodename ):
|
||||
"""Simple placement algorithm:
|
||||
place nodes into evenly sized bins"""
|
||||
# Place nodes into bins
|
||||
if nodename in self.hset:
|
||||
server = self.servdict[ self.hind / self.hbin ]
|
||||
self.hind += 1
|
||||
elif nodename in self.sset:
|
||||
server = self.servdict[ self.sind / self.sbin ]
|
||||
self.sind += 1
|
||||
elif nodename in self.cset:
|
||||
server = self.servdict[ self.cind / self.cbin ]
|
||||
self.cind += 1
|
||||
else:
|
||||
info( 'warning: unknown node', nodename )
|
||||
server = self.servdict[ 0 ]
|
||||
return server
|
||||
|
||||
|
||||
# The MininetCluster class is not strictly necessary.
|
||||
# However, it has several purposes:
|
||||
# 1. To set up ssh connection sharing/multiplexing
|
||||
# 2. To pre-flight the system so that everything is more likely to work
|
||||
# 3. To allow connection/connectivity monitoring
|
||||
# 4. To support pluggable placement algorithms
|
||||
|
||||
class MininetCluster( Mininet ):
|
||||
|
||||
"Cluster-enhanced version of Mininet class"
|
||||
|
||||
# Default ssh command
|
||||
# BatchMode yes: don't ask for password
|
||||
# ForwardAgent yes: forward authentication credentials
|
||||
sshcmd = [ 'ssh', '-o', 'BatchMode=yes', '-o', 'ForwardAgent=yes' ]
|
||||
|
||||
def __init__( self, *args, **kwargs ):
|
||||
"""servers: a list of servers to use (note: include
|
||||
localhost or None to use local system as well)
|
||||
user: user name for server ssh
|
||||
placement: Placer() subclass"""
|
||||
params = { 'host': RemoteHost,
|
||||
'switch': RemoteOVSSwitch,
|
||||
'link': RemoteLink,
|
||||
'precheck': True }
|
||||
params.update( kwargs )
|
||||
servers = params.pop( 'servers', [ 'localhost' ] )
|
||||
servers = [ s if s else 'localhost' for s in servers ]
|
||||
self.servers = servers
|
||||
self.serverIP = params.pop( 'serverIP', {} )
|
||||
if not self.serverIP:
|
||||
self.serverIP = { server: RemoteMixin.findServerIP( server )
|
||||
for server in self.servers }
|
||||
self.user = params.pop( 'user', findUser() )
|
||||
if params.pop( 'precheck' ):
|
||||
self.precheck()
|
||||
self.connections = {}
|
||||
self.placement = params.pop( 'placement', SwitchBinPlacer )
|
||||
# Make sure control directory exists
|
||||
self.cdir = os.environ[ 'HOME' ] + '/.ssh/mn'
|
||||
errRun( [ 'mkdir', '-p', self.cdir ] )
|
||||
Mininet.__init__( self, *args, **params )
|
||||
|
||||
def popen( self, cmd ):
|
||||
"Popen() for server connections"
|
||||
assert self # please pylint
|
||||
old = signal( SIGINT, SIG_IGN )
|
||||
conn = Popen( cmd, stdin=PIPE, stdout=PIPE, close_fds=True )
|
||||
signal( SIGINT, old )
|
||||
return conn
|
||||
|
||||
def baddLink( self, *args, **kwargs ):
|
||||
"break addlink for testing"
|
||||
pass
|
||||
|
||||
def precheck( self ):
|
||||
"""Pre-check to make sure connection works and that
|
||||
we can call sudo without a password"""
|
||||
result = 0
|
||||
info( '*** Checking servers\n' )
|
||||
for server in self.servers:
|
||||
ip = self.serverIP[ server ]
|
||||
if not server or server == 'localhost':
|
||||
continue
|
||||
info( server, '' )
|
||||
dest = '%s@%s' % ( self.user, ip )
|
||||
cmd = [ 'sudo', '-E', '-u', self.user ]
|
||||
cmd += self.sshcmd + [ '-n', dest, 'sudo true' ]
|
||||
debug( ' '.join( cmd ), '\n' )
|
||||
_out, _err, code = errRun( cmd )
|
||||
if code != 0:
|
||||
error( '\nstartConnection: server connection check failed '
|
||||
'to %s using command:\n%s\n'
|
||||
% ( server, ' '.join( cmd ) ) )
|
||||
result |= code
|
||||
if result:
|
||||
error( '*** Server precheck failed.\n'
|
||||
'*** Make sure that the above ssh command works'
|
||||
' correctly.\n'
|
||||
'*** You may also need to run mn -c on all nodes, and/or\n'
|
||||
'*** use sudo -E.\n' )
|
||||
sys.exit( 1 )
|
||||
info( '\n' )
|
||||
|
||||
def modifiedaddHost( self, *args, **kwargs ):
|
||||
"Slightly modify addHost"
|
||||
assert self # please pylint
|
||||
kwargs[ 'splitInit' ] = True
|
||||
return Mininet.addHost( *args, **kwargs )
|
||||
|
||||
def placeNodes( self ):
|
||||
"""Place nodes on servers (if they don't have a server), and
|
||||
start shell processes"""
|
||||
if not self.servers or not self.topo:
|
||||
# No shirt, no shoes, no service
|
||||
return
|
||||
nodes = self.topo.nodes()
|
||||
placer = self.placement( servers=self.servers,
|
||||
nodes=self.topo.nodes(),
|
||||
hosts=self.topo.hosts(),
|
||||
switches=self.topo.switches(),
|
||||
links=self.topo.links() )
|
||||
for node in nodes:
|
||||
config = self.topo.nodeInfo( node )
|
||||
# keep local server name consistent accross nodes
|
||||
if 'server' in config.keys() and config[ 'server' ] is None:
|
||||
config[ 'server' ] = 'localhost'
|
||||
server = config.setdefault( 'server', placer.place( node ) )
|
||||
if server:
|
||||
config.setdefault( 'serverIP', self.serverIP[ server ] )
|
||||
info( '%s:%s ' % ( node, server ) )
|
||||
key = ( None, server )
|
||||
_dest, cfile, _conn = self.connections.get(
|
||||
key, ( None, None, None ) )
|
||||
if cfile:
|
||||
config.setdefault( 'controlPath', cfile )
|
||||
|
||||
def addController( self, *args, **kwargs ):
|
||||
"Patch to update IP address to global IP address"
|
||||
controller = Mininet.addController( self, *args, **kwargs )
|
||||
# Update IP address for controller that may not be local
|
||||
if ( isinstance( controller, Controller)
|
||||
and controller.IP() == '127.0.0.1'
|
||||
and ' eth0:' in controller.cmd( 'ip link show' ) ):
|
||||
Intf( 'eth0', node=controller ).updateIP()
|
||||
return controller
|
||||
|
||||
def buildFromTopo( self, *args, **kwargs ):
|
||||
"Start network"
|
||||
info( '*** Placing nodes\n' )
|
||||
self.placeNodes()
|
||||
info( '\n' )
|
||||
Mininet.buildFromTopo( self, *args, **kwargs )
|
||||
|
||||
|
||||
def testNsTunnels():
|
||||
"Test tunnels between nodes in namespaces"
|
||||
net = Mininet( host=RemoteHost, link=RemoteLink )
|
||||
h1 = net.addHost( 'h1' )
|
||||
h2 = net.addHost( 'h2', server='ubuntu2' )
|
||||
net.addLink( h1, h2 )
|
||||
net.start()
|
||||
net.pingAll()
|
||||
net.stop()
|
||||
|
||||
# Manual topology creation with net.add*()
|
||||
#
|
||||
# This shows how node options may be used to manage
|
||||
# cluster placement using the net.add*() API
|
||||
|
||||
def testRemoteNet( remote='ubuntu2' ):
|
||||
"Test remote Node classes"
|
||||
print '*** Remote Node Test'
|
||||
net = Mininet( host=RemoteHost, switch=RemoteOVSSwitch,
|
||||
link=RemoteLink )
|
||||
c0 = net.addController( 'c0' )
|
||||
# Make sure controller knows its non-loopback address
|
||||
Intf( 'eth0', node=c0 ).updateIP()
|
||||
print "*** Creating local h1"
|
||||
h1 = net.addHost( 'h1' )
|
||||
print "*** Creating remote h2"
|
||||
h2 = net.addHost( 'h2', server=remote )
|
||||
print "*** Creating local s1"
|
||||
s1 = net.addSwitch( 's1' )
|
||||
print "*** Creating remote s2"
|
||||
s2 = net.addSwitch( 's2', server=remote )
|
||||
print "*** Adding links"
|
||||
net.addLink( h1, s1 )
|
||||
net.addLink( s1, s2 )
|
||||
net.addLink( h2, s2 )
|
||||
net.start()
|
||||
print 'Mininet is running on', quietRun( 'hostname' ).strip()
|
||||
for node in c0, h1, h2, s1, s2:
|
||||
print 'Node', node, 'is running on', node.cmd( 'hostname' ).strip()
|
||||
net.pingAll()
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
|
||||
# High-level/Topo API example
|
||||
#
|
||||
# This shows how existing Mininet topologies may be used in cluster
|
||||
# mode by creating node placement functions and a controller which
|
||||
# can be accessed remotely. This implements a very compatible version
|
||||
# of cluster edition with a minimum of code!
|
||||
|
||||
remoteHosts = [ 'h2' ]
|
||||
remoteSwitches = [ 's2' ]
|
||||
remoteServer = 'ubuntu2'
|
||||
|
||||
def HostPlacer( name, *args, **params ):
|
||||
"Custom Host() constructor which places hosts on servers"
|
||||
if name in remoteHosts:
|
||||
return RemoteHost( name, *args, server=remoteServer, **params )
|
||||
else:
|
||||
return Host( name, *args, **params )
|
||||
|
||||
def SwitchPlacer( name, *args, **params ):
|
||||
"Custom Switch() constructor which places switches on servers"
|
||||
if name in remoteSwitches:
|
||||
return RemoteOVSSwitch( name, *args, server=remoteServer, **params )
|
||||
else:
|
||||
return RemoteOVSSwitch( name, *args, **params )
|
||||
|
||||
def ClusterController( *args, **kwargs):
|
||||
"Custom Controller() constructor which updates its eth0 IP address"
|
||||
controller = Controller( *args, **kwargs )
|
||||
# Find out its IP address so that cluster switches can connect
|
||||
Intf( 'eth0', node=controller ).updateIP()
|
||||
return controller
|
||||
|
||||
def testRemoteTopo():
|
||||
"Test remote Node classes using Mininet()/Topo() API"
|
||||
topo = LinearTopo( 2 )
|
||||
net = Mininet( topo=topo, host=HostPlacer, switch=SwitchPlacer,
|
||||
link=RemoteLink, controller=ClusterController )
|
||||
net.start()
|
||||
net.pingAll()
|
||||
net.stop()
|
||||
|
||||
# Need to test backwards placement, where each host is on
|
||||
# a server other than its switch!! But seriously we could just
|
||||
# do random switch placement rather than completely random
|
||||
# host placement.
|
||||
|
||||
def testRemoteSwitches():
|
||||
"Test with local hosts and remote switches"
|
||||
servers = [ 'localhost', 'ubuntu2']
|
||||
topo = TreeTopo( depth=4, fanout=2 )
|
||||
net = MininetCluster( topo=topo, servers=servers,
|
||||
placement=RoundRobinPlacer )
|
||||
net.start()
|
||||
net.pingAll()
|
||||
net.stop()
|
||||
|
||||
|
||||
#
|
||||
# For testing and demo purposes it would be nice to draw the
|
||||
# network graph and color it based on server.
|
||||
|
||||
# The MininetCluster() class integrates pluggable placement
|
||||
# functions, for maximum ease of use. MininetCluster() also
|
||||
# pre-flights and multiplexes server connections.
|
||||
|
||||
def testMininetCluster():
|
||||
"Test MininetCluster()"
|
||||
servers = [ 'localhost', 'ubuntu2' ]
|
||||
topo = TreeTopo( depth=3, fanout=3 )
|
||||
net = MininetCluster( topo=topo, servers=servers,
|
||||
placement=SwitchBinPlacer )
|
||||
net.start()
|
||||
net.pingAll()
|
||||
net.stop()
|
||||
|
||||
def signalTest():
|
||||
"Make sure hosts are robust to signals"
|
||||
h = RemoteHost( 'h0', server='ubuntu1' )
|
||||
h.shell.send_signal( SIGINT )
|
||||
h.shell.poll()
|
||||
if h.shell.returncode is None:
|
||||
print 'OK: ', h, 'has not exited'
|
||||
else:
|
||||
print 'FAILURE:', h, 'exited with code', h.shell.returncode
|
||||
h.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
# testRemoteTopo()
|
||||
# testRemoteNet()
|
||||
# testMininetCluster()
|
||||
# testRemoteSwitches()
|
||||
signalTest()
|
||||
@@ -1,22 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
'''
|
||||
A sanity check for cluster edition
|
||||
'''
|
||||
|
||||
from mininet.examples.cluster import MininetCluster
|
||||
from mininet.log import setLogLevel
|
||||
from mininet.examples.clustercli import ClusterCLI as CLI
|
||||
from mininet.topo import SingleSwitchTopo
|
||||
|
||||
def clusterSanity():
|
||||
"Sanity check for cluster mode"
|
||||
topo = SingleSwitchTopo()
|
||||
net = MininetCluster( topo=topo )
|
||||
net.start()
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
clusterSanity()
|
||||
@@ -1,100 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"CLI for Mininet Cluster Edition prototype demo"
|
||||
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import output, error
|
||||
|
||||
# pylint: disable=global-statement
|
||||
nx, graphviz_layout, plt = None, None, None # Will be imported on demand
|
||||
|
||||
|
||||
class ClusterCLI( CLI ):
|
||||
"CLI with additional commands for Cluster Edition demo"
|
||||
|
||||
@staticmethod
|
||||
def colorsFor( seq ):
|
||||
"Return a list of background colors for a sequence"
|
||||
colors = [ 'red', 'lightgreen', 'cyan', 'yellow', 'orange',
|
||||
'magenta', 'pink', 'grey', 'brown',
|
||||
'white' ]
|
||||
slen, clen = len( seq ), len( colors )
|
||||
reps = max( 1, slen / clen )
|
||||
colors = colors * reps
|
||||
colors = colors[ 0 : slen ]
|
||||
return colors
|
||||
|
||||
def do_plot( self, _line ):
|
||||
"Plot topology colored by node placement"
|
||||
# Import networkx if needed
|
||||
global nx, plt
|
||||
if not nx:
|
||||
try:
|
||||
# pylint: disable=import-error
|
||||
import networkx
|
||||
nx = networkx # satisfy pylint
|
||||
from matplotlib import pyplot
|
||||
plt = pyplot # satisfiy pylint
|
||||
import pygraphviz
|
||||
assert pygraphviz # silence pyflakes
|
||||
# pylint: enable=import-error
|
||||
except ImportError:
|
||||
error( 'plot requires networkx, matplotlib and pygraphviz - '
|
||||
'please install them and try again\n' )
|
||||
return
|
||||
# Make a networkx Graph
|
||||
g = nx.Graph()
|
||||
mn = self.mn
|
||||
servers, hosts, switches = mn.servers, mn.hosts, mn.switches
|
||||
nodes = hosts + switches
|
||||
g.add_nodes_from( nodes )
|
||||
links = [ ( link.intf1.node, link.intf2.node )
|
||||
for link in self.mn.links ]
|
||||
g.add_edges_from( links )
|
||||
# Pick some shapes and colors
|
||||
# shapes = hlen * [ 's' ] + slen * [ 'o' ]
|
||||
color = dict( zip( servers, self.colorsFor( servers ) ) )
|
||||
# Plot it!
|
||||
pos = nx.graphviz_layout( g )
|
||||
opts = { 'ax': None, 'font_weight': 'bold',
|
||||
'width': 2, 'edge_color': 'darkblue' }
|
||||
hcolors = [ color[ getattr( h, 'server', 'localhost' ) ]
|
||||
for h in hosts ]
|
||||
scolors = [ color[ getattr( s, 'server', 'localhost' ) ]
|
||||
for s in switches ]
|
||||
nx.draw_networkx( g, pos=pos, nodelist=hosts, node_size=800,
|
||||
label='host', node_color=hcolors, node_shape='s',
|
||||
**opts )
|
||||
nx.draw_networkx( g, pos=pos, nodelist=switches, node_size=1000,
|
||||
node_color=scolors, node_shape='o', **opts )
|
||||
# Get rid of axes, add title, and show
|
||||
fig = plt.gcf()
|
||||
ax = plt.gca()
|
||||
ax.get_xaxis().set_visible( False )
|
||||
ax.get_yaxis().set_visible( False )
|
||||
fig.canvas.set_window_title( 'Mininet')
|
||||
plt.title( 'Node Placement', fontweight='bold' )
|
||||
plt.show()
|
||||
|
||||
def do_status( self, _line ):
|
||||
"Report on node shell status"
|
||||
nodes = self.mn.hosts + self.mn.switches
|
||||
for node in nodes:
|
||||
node.shell.poll()
|
||||
exited = [ node for node in nodes
|
||||
if node.shell.returncode is not None ]
|
||||
if exited:
|
||||
for node in exited:
|
||||
output( '%s has exited with code %d\n'
|
||||
% ( node, node.shell.returncode ) )
|
||||
else:
|
||||
output( 'All nodes are still running.\n' )
|
||||
|
||||
def do_placement( self, _line ):
|
||||
"Describe node placement"
|
||||
mn = self.mn
|
||||
nodes = mn.hosts + mn.switches + mn.controllers
|
||||
for server in mn.servers:
|
||||
names = [ n.name for n in nodes if hasattr( n, 'server' )
|
||||
and n.server == server ]
|
||||
output( '%s: %s\n' % ( server, ' '.join( names ) ) )
|
||||
@@ -1,22 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"clusterdemo.py: demo of Mininet Cluster Edition prototype"
|
||||
|
||||
from mininet.examples.cluster import MininetCluster, SwitchBinPlacer
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.log import setLogLevel
|
||||
from mininet.examples.clustercli import ClusterCLI as CLI
|
||||
|
||||
def demo():
|
||||
"Simple Demo of Cluster Mode"
|
||||
servers = [ 'localhost', 'ubuntu2', 'ubuntu3' ]
|
||||
topo = TreeTopo( depth=3, fanout=3 )
|
||||
net = MininetCluster( topo=topo, servers=servers,
|
||||
placement=SwitchBinPlacer )
|
||||
net.start()
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
demo()
|
||||
+15
-22
@@ -74,11 +74,11 @@ class Console( Frame ):
|
||||
"Pop up a new terminal window for a node."
|
||||
net.terms += makeTerms( [ node ], title )
|
||||
label = Button( self, text=self.node.name, command=newTerm,
|
||||
**self.buttonStyle )
|
||||
**self.buttonStyle )
|
||||
label.pack( side='top', fill='x' )
|
||||
text = Text( self, wrap='word', **self.textStyle )
|
||||
ybar = Scrollbar( self, orient='vertical', width=7,
|
||||
command=text.yview )
|
||||
command=text.yview )
|
||||
text.configure( yscrollcommand=ybar.set )
|
||||
text.pack( side='left', expand=True, fill='both' )
|
||||
ybar.pack( side='right', fill='y' )
|
||||
@@ -95,7 +95,7 @@ class Console( Frame ):
|
||||
# way to trigger a file event handler from Tk's
|
||||
# event loop!
|
||||
self.tk.createfilehandler( self.node.stdout, READABLE,
|
||||
self.handleReadable )
|
||||
self.handleReadable )
|
||||
|
||||
# We're not a terminal (yet?), so we ignore the following
|
||||
# control characters other than [\b\n\r]
|
||||
@@ -169,8 +169,11 @@ class Graph( Frame ):
|
||||
|
||||
"Graph that we can add bars to over time."
|
||||
|
||||
def __init__( self, parent=None, bg = 'white', gheight=200, gwidth=500,
|
||||
barwidth=10, ymax=3.5,):
|
||||
def __init__( self, parent=None,
|
||||
bg = 'white',
|
||||
gheight=200, gwidth=500,
|
||||
barwidth=10,
|
||||
ymax=3.5,):
|
||||
|
||||
Frame.__init__( self, parent )
|
||||
|
||||
@@ -192,7 +195,7 @@ class Graph( Frame ):
|
||||
width = 25
|
||||
ymax = self.ymax
|
||||
scale = Canvas( self, width=width, height=height,
|
||||
background=self.bg )
|
||||
background=self.bg )
|
||||
opts = { 'fill': 'red' }
|
||||
# Draw scale line
|
||||
scale.create_line( width - 1, height, width - 1, 0, **opts )
|
||||
@@ -208,7 +211,7 @@ class Graph( Frame ):
|
||||
ofs = 20
|
||||
height = self.gheight + ofs
|
||||
self.graph.configure( scrollregion=( 0, -ofs,
|
||||
self.xpos * self.barwidth, height ) )
|
||||
self.xpos * self.barwidth, height ) )
|
||||
self.scale.configure( scrollregion=( 0, -ofs, 0, height ) )
|
||||
|
||||
def yview( self, *args ):
|
||||
@@ -228,7 +231,7 @@ class Graph( Frame ):
|
||||
xbar = Scrollbar( self, orient='horizontal', command=graph.xview )
|
||||
ybar = Scrollbar( self, orient='vertical', command=self.yview )
|
||||
graph.configure( xscrollcommand=xbar.set, yscrollcommand=ybar.set,
|
||||
scrollregion=(0, 0, width, height ) )
|
||||
scrollregion=(0, 0, width, height ) )
|
||||
scale.configure( yscrollcommand=ybar.set )
|
||||
|
||||
# Layout
|
||||
@@ -249,7 +252,7 @@ class Graph( Frame ):
|
||||
x1 = x0 + self.barwidth
|
||||
y0 = self.gheight
|
||||
y1 = ( 1 - percent ) * self.gheight
|
||||
c.create_rectangle( x0, y0, x1, y1, fill='green' )
|
||||
c.create_rectangle( x0 , y0, x1, y1, fill='green' )
|
||||
self.xpos += 1
|
||||
self.updateScrollRegions()
|
||||
self.graph.xview( 'moveto', '1.0' )
|
||||
@@ -315,19 +318,11 @@ class ConsoleApp( Frame ):
|
||||
|
||||
def updateGraph( self, _console, output ):
|
||||
"Update our graph."
|
||||
m = re.search( r'(\d+.?\d*) ([KMG]?bits)/sec', output )
|
||||
m = re.search( r'(\d+) Mbits/sec', output )
|
||||
if not m:
|
||||
return
|
||||
val, units = float( m.group( 1 ) ), m.group( 2 )
|
||||
#convert to Gbps
|
||||
if units[0] == 'M':
|
||||
val *= 10 ** -3
|
||||
elif units[0] == 'K':
|
||||
val *= 10 ** -6
|
||||
elif units[0] == 'b':
|
||||
val *= 10 ** -9
|
||||
self.updates += 1
|
||||
self.bw += val
|
||||
self.bw += .001 * float( m.group( 1 ) )
|
||||
if self.updates >= self.hostCount:
|
||||
self.graph.addBar( self.bw )
|
||||
self.bw = 0
|
||||
@@ -418,9 +413,7 @@ class ConsoleApp( Frame ):
|
||||
count = len( consoles )
|
||||
self.setOutputHook( self.updateGraph )
|
||||
for console in consoles:
|
||||
# Sometimes iperf -sD doesn't return,
|
||||
# so we run it in the background instead
|
||||
console.node.cmd( 'iperf -s &' )
|
||||
console.node.cmd( 'iperf -sD' )
|
||||
i = 0
|
||||
for console in consoles:
|
||||
i = ( i + 1 ) % count
|
||||
|
||||
+52
-24
@@ -1,36 +1,64 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
Create a network where different switches are connected to
|
||||
different controllers, by creating a custom Switch() subclass.
|
||||
This example creates a multi-controller network from
|
||||
semi-scratch; note a topo object could also be used and
|
||||
would be passed into the Mininet() constructor.
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import OVSSwitch, Controller, RemoteController
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.log import setLogLevel
|
||||
from mininet.node import Controller, OVSKernelSwitch
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import setLogLevel
|
||||
|
||||
setLogLevel( 'info' )
|
||||
Switch = OVSKernelSwitch
|
||||
|
||||
# Two local and one "external" controller (which is actually c0)
|
||||
# Ignore the warning message that the remote isn't (yet) running
|
||||
c0 = Controller( 'c0', port=6633 )
|
||||
c1 = Controller( 'c1', port=6634 )
|
||||
c2 = RemoteController( 'c2', ip='127.0.0.1' )
|
||||
def addHost( net, N ):
|
||||
"Create host hN and add to net."
|
||||
name = 'h%d' % N
|
||||
ip = '10.0.0.%d' % N
|
||||
return net.addHost( name, ip=ip )
|
||||
|
||||
cmap = { 's1': c0, 's2': c1, 's3': c2 }
|
||||
def multiControllerNet():
|
||||
"Create a network with multiple controllers."
|
||||
|
||||
class MultiSwitch( OVSSwitch ):
|
||||
"Custom Switch() subclass that connects to different controllers"
|
||||
def start( self, controllers ):
|
||||
return OVSSwitch.start( self, [ cmap[ self.name ] ] )
|
||||
net = Mininet( controller=Controller, switch=Switch)
|
||||
|
||||
topo = TreeTopo( depth=2, fanout=2 )
|
||||
net = Mininet( topo=topo, switch=MultiSwitch, build=False )
|
||||
for c in [ c0, c1 ]:
|
||||
net.addController(c)
|
||||
net.build()
|
||||
net.start()
|
||||
CLI( net )
|
||||
net.stop()
|
||||
print "*** Creating controllers"
|
||||
c1 = net.addController( 'c1', port=6633 )
|
||||
c2 = net.addController( 'c2', port=6634 )
|
||||
|
||||
print "*** Creating switches"
|
||||
s1 = net.addSwitch( 's1' )
|
||||
s2 = net.addSwitch( 's2' )
|
||||
|
||||
print "*** Creating hosts"
|
||||
hosts1 = [ addHost( net, n ) for n in 3, 4 ]
|
||||
hosts2 = [ addHost( net, n ) for n in 5, 6 ]
|
||||
|
||||
print "*** Creating links"
|
||||
for h in hosts1:
|
||||
s1.linkTo( h )
|
||||
for h in hosts2:
|
||||
s2.linkTo( h )
|
||||
s1.linkTo( s2 )
|
||||
|
||||
print "*** Starting network"
|
||||
net.build()
|
||||
c1.start()
|
||||
c2.start()
|
||||
s1.start( [ c1 ] )
|
||||
s2.start( [ c2 ] )
|
||||
|
||||
print "*** Testing network"
|
||||
net.pingAll()
|
||||
|
||||
print "*** Running CLI"
|
||||
CLI( net )
|
||||
|
||||
print "*** Stopping network"
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' ) # for CLI output
|
||||
multiControllerNet()
|
||||
|
||||
@@ -1,61 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
This example creates a multi-controller network from semi-scratch by
|
||||
using the net.add*() API and manually starting the switches and controllers.
|
||||
|
||||
This is the "mid-level" API, which is an alternative to the "high-level"
|
||||
Topo() API which supports parametrized topology classes.
|
||||
|
||||
Note that one could also create a custom switch class and pass it into
|
||||
the Mininet() constructor.
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import Controller, OVSSwitch
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import setLogLevel
|
||||
|
||||
def multiControllerNet():
|
||||
"Create a network from semi-scratch with multiple controllers."
|
||||
|
||||
net = Mininet( controller=Controller, switch=OVSSwitch )
|
||||
|
||||
print "*** Creating (reference) controllers"
|
||||
c1 = net.addController( 'c1', port=6633 )
|
||||
c2 = net.addController( 'c2', port=6634 )
|
||||
|
||||
print "*** Creating switches"
|
||||
s1 = net.addSwitch( 's1' )
|
||||
s2 = net.addSwitch( 's2' )
|
||||
|
||||
print "*** Creating hosts"
|
||||
hosts1 = [ net.addHost( 'h%d' % n ) for n in 3, 4 ]
|
||||
hosts2 = [ net.addHost( 'h%d' % n ) for n in 5, 6 ]
|
||||
|
||||
print "*** Creating links"
|
||||
for h in hosts1:
|
||||
net.addLink( s1, h )
|
||||
for h in hosts2:
|
||||
net.addLink( s2, h )
|
||||
net.addLink( s1, s2 )
|
||||
|
||||
print "*** Starting network"
|
||||
net.build()
|
||||
c1.start()
|
||||
c2.start()
|
||||
s1.start( [ c1 ] )
|
||||
s2.start( [ c2 ] )
|
||||
|
||||
print "*** Testing network"
|
||||
net.pingAll()
|
||||
|
||||
print "*** Running CLI"
|
||||
CLI( net )
|
||||
|
||||
print "*** Stopping network"
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' ) # for CLI output
|
||||
multiControllerNet()
|
||||
@@ -1,158 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
controlnet.py: Mininet with a custom control network
|
||||
|
||||
We create two Mininet() networks, a control network
|
||||
and a data network, running four DataControllers on the
|
||||
control network to control the data network.
|
||||
|
||||
Since we're using UserSwitch on the data network,
|
||||
it should correctly fail over to a backup controller.
|
||||
|
||||
We also use a Mininet Facade to talk to both the
|
||||
control and data networks from a single CLI.
|
||||
"""
|
||||
|
||||
from functools import partial
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import Controller, UserSwitch
|
||||
from mininet.cli import CLI
|
||||
from mininet.topo import Topo
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.log import setLogLevel, info
|
||||
|
||||
# Some minor hacks
|
||||
|
||||
class DataController( Controller ):
|
||||
"""Data Network Controller.
|
||||
patched to avoid checkListening error and to delete intfs"""
|
||||
|
||||
def checkListening( self ):
|
||||
"Ignore spurious error"
|
||||
pass
|
||||
|
||||
def stop( self, *args, **kwargs ):
|
||||
"Make sure intfs are deleted"
|
||||
kwargs.update( deleteIntfs=True )
|
||||
super( DataController, self ).stop( *args, **kwargs )
|
||||
|
||||
|
||||
class MininetFacade( object ):
|
||||
"""Mininet object facade that allows a single CLI to
|
||||
talk to one or more networks"""
|
||||
|
||||
def __init__( self, net, *args, **kwargs ):
|
||||
"""Create MininetFacade object.
|
||||
net: Primary Mininet object
|
||||
args: unnamed networks passed as arguments
|
||||
kwargs: named networks passed as arguments"""
|
||||
self.net = net
|
||||
self.nets = [ net ] + list( args ) + kwargs.values()
|
||||
self.nameToNet = kwargs
|
||||
self.nameToNet['net'] = net
|
||||
|
||||
def __getattr__( self, name ):
|
||||
"returns attribute from Primary Mininet object"
|
||||
return getattr( self.net, name )
|
||||
|
||||
def __getitem__( self, key ):
|
||||
"returns primary/named networks or node from any net"
|
||||
#search kwargs for net named key
|
||||
if key in self.nameToNet:
|
||||
return self.nameToNet[ key ]
|
||||
#search each net for node named key
|
||||
for net in self.nets:
|
||||
if key in net:
|
||||
return net[ key ]
|
||||
|
||||
def __iter__( self ):
|
||||
"Iterate through all nodes in all Mininet objects"
|
||||
for net in self.nets:
|
||||
for node in net:
|
||||
yield node
|
||||
|
||||
def __len__( self ):
|
||||
"returns aggregate number of nodes in all nets"
|
||||
count = 0
|
||||
for net in self.nets:
|
||||
count += len(net)
|
||||
return count
|
||||
|
||||
def __contains__( self, key ):
|
||||
"returns True if node is a member of any net"
|
||||
return key in self.keys()
|
||||
|
||||
def keys( self ):
|
||||
"returns a list of all node names in all networks"
|
||||
return list( self )
|
||||
|
||||
def values( self ):
|
||||
"returns a list of all nodes in all networks"
|
||||
return [ self[ key ] for key in self ]
|
||||
|
||||
def items( self ):
|
||||
"returns (key,value) tuple list for every node in all networks"
|
||||
return zip( self.keys(), self.values() )
|
||||
|
||||
# A real control network!
|
||||
|
||||
class ControlNetwork( Topo ):
|
||||
"Control Network Topology"
|
||||
def __init__( self, n, dataController=DataController, **kwargs ):
|
||||
"""n: number of data network controller nodes
|
||||
dataController: class for data network controllers"""
|
||||
Topo.__init__( self, **kwargs )
|
||||
# Connect everything to a single switch
|
||||
cs0 = self.addSwitch( 'cs0' )
|
||||
# Add hosts which will serve as data network controllers
|
||||
for i in range( 0, n ):
|
||||
c = self.addHost( 'c%s' % i, cls=dataController,
|
||||
inNamespace=True )
|
||||
self.addLink( c, cs0 )
|
||||
# Connect switch to root namespace so that data network
|
||||
# switches will be able to talk to us
|
||||
root = self.addHost( 'root', inNamespace=False )
|
||||
self.addLink( root, cs0 )
|
||||
|
||||
|
||||
# Make it Happen!!
|
||||
|
||||
def run():
|
||||
"Create control and data networks, and invoke the CLI"
|
||||
|
||||
info( '* Creating Control Network\n' )
|
||||
ctopo = ControlNetwork( n=4, dataController=DataController )
|
||||
cnet = Mininet( topo=ctopo, ipBase='192.168.123.0/24', controller=None )
|
||||
info( '* Adding Control Network Controller\n')
|
||||
cnet.addController( 'cc0', controller=Controller )
|
||||
info( '* Starting Control Network\n')
|
||||
cnet.start()
|
||||
|
||||
info( '* Creating Data Network\n' )
|
||||
topo = TreeTopo( depth=2, fanout=2 )
|
||||
# UserSwitch so we can easily test failover
|
||||
sw = partial( UserSwitch, opts='--inactivity-probe=1 --max-backoff=1' )
|
||||
net = Mininet( topo=topo, switch=sw, controller=None )
|
||||
info( '* Adding Controllers to Data Network\n' )
|
||||
for host in cnet.hosts:
|
||||
if isinstance(host, Controller):
|
||||
net.addController( host )
|
||||
info( '* Starting Data Network\n')
|
||||
net.start()
|
||||
|
||||
mn = MininetFacade( net, cnet=cnet )
|
||||
|
||||
CLI( mn )
|
||||
|
||||
info( '* Stopping Data Network\n' )
|
||||
net.stop()
|
||||
|
||||
info( '* Stopping Control Network\n' )
|
||||
cnet.stop()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
run()
|
||||
+18
-10
@@ -1,14 +1,27 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
cpu.py: test iperf bandwidth for varying cpu limits
|
||||
cpu.py: test iperf bandwidth for varying cpu limtis
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import CPULimitedHost
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.util import custom, waitListening
|
||||
from mininet.log import setLogLevel, info
|
||||
from mininet.util import custom
|
||||
from mininet.log import setLogLevel, output
|
||||
|
||||
from time import sleep
|
||||
|
||||
def waitListening(client, server, port):
|
||||
"Wait until server is listening on port"
|
||||
if not client.cmd('which telnet'):
|
||||
raise Exception('Could not find telnet')
|
||||
cmd = ('sh -c "echo A | telnet -e A %s %s"' %
|
||||
(server.IP(), port))
|
||||
while 'Connected' not in client.cmd(cmd):
|
||||
output('waiting for', server,
|
||||
'to listen on port', port, '\n')
|
||||
sleep(.5)
|
||||
|
||||
|
||||
def bwtest( cpuLimits, period_us=100000, seconds=5 ):
|
||||
@@ -25,12 +38,7 @@ def bwtest( cpuLimits, period_us=100000, seconds=5 ):
|
||||
host = custom( CPULimitedHost, sched=sched,
|
||||
period_us=period_us,
|
||||
cpu=cpu )
|
||||
try:
|
||||
net = Mininet( topo=topo, host=host )
|
||||
# pylint: disable=bare-except
|
||||
except:
|
||||
info( '*** Skipping host %s\n' % sched )
|
||||
break
|
||||
net = Mininet( topo=topo, host=host )
|
||||
net.start()
|
||||
net.pingAll()
|
||||
hosts = [ net.getNodeByName( h ) for h in topo.hosts() ]
|
||||
@@ -38,7 +46,7 @@ def bwtest( cpuLimits, period_us=100000, seconds=5 ):
|
||||
server.cmd( 'iperf -s -p 5001 &' )
|
||||
waitListening( client, server, 5001 )
|
||||
result = client.cmd( 'iperf -yc -t %s -c %s' % (
|
||||
seconds, server.IP() ) ).split( ',' )
|
||||
seconds, server.IP() ) ).split( ',' )
|
||||
bps = float( result[ -1 ] )
|
||||
server.cmdPrint( 'kill %iperf' )
|
||||
net.stop()
|
||||
|
||||
@@ -27,8 +27,8 @@ def emptyNet():
|
||||
s3 = net.addSwitch( 's3' )
|
||||
|
||||
info( '*** Creating links\n' )
|
||||
net.addLink( h1, s3 )
|
||||
net.addLink( h2, s3 )
|
||||
h1.linkTo( s3 )
|
||||
h2.linkTo( s3 )
|
||||
|
||||
info( '*** Starting network\n')
|
||||
net.start()
|
||||
|
||||
+6
-15
@@ -6,12 +6,10 @@ hardware interface) to a network after the network is created.
|
||||
"""
|
||||
|
||||
import re
|
||||
import sys
|
||||
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import setLogLevel, info, error
|
||||
from mininet.net import Mininet
|
||||
from mininet.link import Intf
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.util import quietRun
|
||||
|
||||
@@ -23,29 +21,22 @@ def checkIntf( intf ):
|
||||
ips = re.findall( r'\d+\.\d+\.\d+\.\d+', quietRun( 'ifconfig ' + intf ) )
|
||||
if ips:
|
||||
error( 'Error:', intf, 'has an IP address,'
|
||||
'and is probably in use!\n' )
|
||||
'and is probably in use!\n' )
|
||||
exit( 1 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
|
||||
# try to get hw intf from the command line; by default, use eth1
|
||||
intfName = sys.argv[ 1 ] if len( sys.argv ) > 1 else 'eth1'
|
||||
info( '*** Connecting to hw intf: %s' % intfName )
|
||||
|
||||
info( '*** Checking', intfName, '\n' )
|
||||
checkIntf( intfName )
|
||||
newIntf = 'eth1'
|
||||
info( '*** Checking', newIntf, '\n' )
|
||||
checkIntf( newIntf )
|
||||
|
||||
info( '*** Creating network\n' )
|
||||
net = Mininet( topo=TreeTopo( depth=1, fanout=2 ) )
|
||||
|
||||
switch = net.switches[ 0 ]
|
||||
info( '*** Adding hardware interface', intfName, 'to switch',
|
||||
switch.name, '\n' )
|
||||
_intf = Intf( intfName, node=switch )
|
||||
|
||||
info( '*** Note: you may need to reconfigure the interfaces for '
|
||||
'the Mininet hosts:\n', net.hosts, '\n' )
|
||||
info( '*** Adding', newIntf, 'to switch', switch.name, '\n' )
|
||||
switch.addIntf( newIntf )
|
||||
|
||||
net.start()
|
||||
CLI( net )
|
||||
|
||||
@@ -1,48 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
'''
|
||||
example of using various TCIntf options.
|
||||
reconfigures a single interface using intf.config()
|
||||
to use different traffic control commands to test
|
||||
bandwidth, loss, and delay
|
||||
'''
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.log import setLogLevel, info
|
||||
from mininet.link import TCLink
|
||||
|
||||
def intfOptions():
|
||||
"run various traffic control commands on a single interface"
|
||||
net = Mininet( autoStaticArp=True )
|
||||
net.addController( 'c0' )
|
||||
h1 = net.addHost( 'h1' )
|
||||
h2 = net.addHost( 'h2' )
|
||||
s1 = net.addSwitch( 's1' )
|
||||
link1 = net.addLink( h1, s1, cls=TCLink )
|
||||
net.addLink( h2, s1 )
|
||||
net.start()
|
||||
|
||||
# flush out latency from reactive forwarding delay
|
||||
net.pingAll()
|
||||
|
||||
info( '\n*** Configuring one intf with bandwidth of 5 Mb\n' )
|
||||
link1.intf1.config( bw=5 )
|
||||
info( '\n*** Running iperf to test\n' )
|
||||
net.iperf()
|
||||
|
||||
info( '\n*** Configuring one intf with loss of 50%\n' )
|
||||
link1.intf1.config( loss=50 )
|
||||
info( '\n' )
|
||||
net.iperf( ( h1, h2 ), l4Type='UDP' )
|
||||
|
||||
info( '\n*** Configuring one intf with delay of 15ms\n' )
|
||||
link1.intf1.config( delay='15ms' )
|
||||
info( '\n*** Run a ping to confirm delay\n' )
|
||||
net.pingPairFull()
|
||||
|
||||
info( '\n*** Done testing\n' )
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
intfOptions()
|
||||
+24
-15
@@ -9,35 +9,44 @@ from mininet.link import TCIntf
|
||||
from mininet.node import CPULimitedHost
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.util import custom, quietRun
|
||||
from mininet.log import setLogLevel, info
|
||||
|
||||
from mininet.log import setLogLevel
|
||||
from time import sleep
|
||||
|
||||
def testLinkLimit( net, bw ):
|
||||
"Run bandwidth limit test"
|
||||
info( '*** Testing network %.2f Mbps bandwidth limit\n' % bw )
|
||||
net.iperf()
|
||||
print '*** Testing network %.2f Mbps bandwidth limit' % bw
|
||||
net.iperf( )
|
||||
|
||||
def limit( bw=10, cpu=.1 ):
|
||||
def testCpuLimit( net, cpu ):
|
||||
"run CPU limit test"
|
||||
pct = cpu * 100
|
||||
print '*** Testing CPU %.0f%% bandwidth limit' % pct
|
||||
h1, h2 = net.hosts
|
||||
h1.cmd( 'while true; do a=1; done &' )
|
||||
h2.cmd( 'while true; do a=1; done &' )
|
||||
pid1 = h1.cmd( 'echo $!' ).strip()
|
||||
pid2 = h2.cmd( 'echo $!' ).strip()
|
||||
cmd = 'ps -p %s,%s -o pid,%%cpu,args' % ( pid1, pid2 )
|
||||
# It's a shame that this is what pylint prefers
|
||||
for _ in range( 5 ):
|
||||
sleep( 1 )
|
||||
print quietRun( cmd ).strip()
|
||||
h1.cmd( 'kill %1')
|
||||
h2.cmd( 'kill %1')
|
||||
|
||||
def limit( bw=10, cpu=.4 ):
|
||||
"""Example/test of link and CPU bandwidth limits
|
||||
bw: interface bandwidth limit in Mbps
|
||||
cpu: cpu limit as fraction of overall CPU time"""
|
||||
intf = custom( TCIntf, bw=bw )
|
||||
myTopo = TreeTopo( depth=1, fanout=2 )
|
||||
for sched in 'rt', 'cfs':
|
||||
info( '*** Testing with', sched, 'bandwidth limiting\n' )
|
||||
if sched == 'rt':
|
||||
release = quietRun( 'uname -r' ).strip('\r\n')
|
||||
output = quietRun( 'grep CONFIG_RT_GROUP_SCHED /boot/config-%s'
|
||||
% release )
|
||||
if output == '# CONFIG_RT_GROUP_SCHED is not set\n':
|
||||
info( '*** RT Scheduler is not enabled in your kernel. '
|
||||
'Skipping this test\n' )
|
||||
continue
|
||||
print '*** Testing with', sched, 'bandwidth limiting'
|
||||
host = custom( CPULimitedHost, sched=sched, cpu=cpu )
|
||||
net = Mininet( topo=myTopo, intf=intf, host=host )
|
||||
net.start()
|
||||
testLinkLimit( net, bw=bw )
|
||||
net.runCpuLimitTest( cpu=cpu )
|
||||
testCpuLimit( net, cpu=cpu )
|
||||
net.stop()
|
||||
|
||||
def verySimpleLimit( bw=150 ):
|
||||
|
||||
+10
-26
@@ -24,12 +24,10 @@ of switches, this example demonstrates:
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import UserSwitch, OVSKernelSwitch, Controller
|
||||
from mininet.node import UserSwitch, OVSKernelSwitch
|
||||
from mininet.topo import Topo
|
||||
from mininet.log import lg
|
||||
from mininet.util import irange, quietRun
|
||||
from mininet.link import TCLink
|
||||
from functools import partial
|
||||
from mininet.util import irange
|
||||
|
||||
import sys
|
||||
flush = sys.stdout.flush
|
||||
@@ -43,22 +41,22 @@ class LinearTestTopo( Topo ):
|
||||
Topo.__init__( self, **params )
|
||||
|
||||
# Create switches and hosts
|
||||
hosts = [ self.addHost( 'h%s' % h )
|
||||
hosts = [ self.add_host( 'h%s' % h )
|
||||
for h in irange( 1, N ) ]
|
||||
switches = [ self.addSwitch( 's%s' % s )
|
||||
switches = [ self.add_switch( 's%s' % s )
|
||||
for s in irange( 1, N - 1 ) ]
|
||||
|
||||
# Wire up switches
|
||||
last = None
|
||||
for switch in switches:
|
||||
if last:
|
||||
self.addLink( last, switch )
|
||||
self.add_link( last, switch )
|
||||
last = switch
|
||||
|
||||
# Wire up hosts
|
||||
self.addLink( hosts[ 0 ], switches[ 0 ] )
|
||||
self.add_link( hosts[ 0 ], switches[ 0 ] )
|
||||
for host, switch in zip( hosts[ 1: ], switches ):
|
||||
self.addLink( host, switch )
|
||||
self.add_link( host, switch )
|
||||
|
||||
|
||||
def linearBandwidthTest( lengths ):
|
||||
@@ -70,26 +68,15 @@ def linearBandwidthTest( lengths ):
|
||||
hostCount = switchCount + 1
|
||||
|
||||
switches = { 'reference user': UserSwitch,
|
||||
'Open vSwitch kernel': OVSKernelSwitch }
|
||||
|
||||
# UserSwitch is horribly slow with recent kernels.
|
||||
# We can reinstate it once its performance is fixed
|
||||
del switches[ 'reference user' ]
|
||||
'Open vSwitch kernel': OVSKernelSwitch }
|
||||
|
||||
topo = LinearTestTopo( hostCount )
|
||||
|
||||
# Select TCP Reno
|
||||
output = quietRun( 'sysctl -w net.ipv4.tcp_congestion_control=reno' )
|
||||
assert 'reno' in output
|
||||
|
||||
for datapath in switches.keys():
|
||||
print "*** testing", datapath, "datapath"
|
||||
Switch = switches[ datapath ]
|
||||
results[ datapath ] = []
|
||||
link = partial( TCLink, delay='1ms' )
|
||||
net = Mininet( topo=topo, switch=Switch,
|
||||
controller=Controller, waitConnected=True,
|
||||
link=link )
|
||||
net = Mininet( topo=topo, switch=Switch )
|
||||
net.start()
|
||||
print "*** testing basic connectivity"
|
||||
for n in lengths:
|
||||
@@ -97,11 +84,8 @@ def linearBandwidthTest( lengths ):
|
||||
print "*** testing bandwidth"
|
||||
for n in lengths:
|
||||
src, dst = net.hosts[ 0 ], net.hosts[ n ]
|
||||
# Try to prime the pump to reduce PACKET_INs during test
|
||||
# since the reference controller is reactive
|
||||
src.cmd( 'telnet', dst.IP(), '5001' )
|
||||
print "testing", src.name, "<->", dst.name,
|
||||
bandwidth = net.iperf( [ src, dst ], seconds=10 )
|
||||
bandwidth = net.iperf( [ src, dst ] )
|
||||
print bandwidth
|
||||
flush()
|
||||
results[ datapath ] += [ ( n, bandwidth ) ]
|
||||
|
||||
@@ -1,89 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
linuxrouter.py: Example network with Linux IP router
|
||||
|
||||
This example converts a Node into a router using IP forwarding
|
||||
already built into Linux.
|
||||
|
||||
The example topology creates a router and three IP subnets:
|
||||
|
||||
- 192.168.1.0/24 (r0-eth1, IP: 192.168.1.1)
|
||||
- 172.16.0.0/12 (r0-eth2, IP: 172.16.0.1)
|
||||
- 10.0.0.0/8 (r0-eth3, IP: 10.0.0.1)
|
||||
|
||||
Each subnet consists of a single host connected to
|
||||
a single switch:
|
||||
|
||||
r0-eth1 - s1-eth1 - h1-eth0 (IP: 192.168.1.100)
|
||||
r0-eth2 - s2-eth1 - h2-eth0 (IP: 172.16.0.100)
|
||||
r0-eth3 - s3-eth1 - h3-eth0 (IP: 10.0.0.100)
|
||||
|
||||
The example relies on default routing entries that are
|
||||
automatically created for each router interface, as well
|
||||
as 'defaultRoute' parameters for the host interfaces.
|
||||
|
||||
Additional routes may be added to the router or hosts by
|
||||
executing 'ip route' or 'route' commands on the router or hosts.
|
||||
"""
|
||||
|
||||
from mininet.topo import Topo
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import Node
|
||||
from mininet.log import setLogLevel, info
|
||||
from mininet.cli import CLI
|
||||
|
||||
class LinuxRouter( Node ):
|
||||
"A Node with IP forwarding enabled."
|
||||
|
||||
def config( self, **params ):
|
||||
super( LinuxRouter, self).config( **params )
|
||||
# Enable forwarding on the router
|
||||
self.cmd( 'sysctl net.ipv4.ip_forward=1' )
|
||||
|
||||
def terminate( self ):
|
||||
self.cmd( 'sysctl net.ipv4.ip_forward=0' )
|
||||
super( LinuxRouter, self ).terminate()
|
||||
|
||||
|
||||
class NetworkTopo( Topo ):
|
||||
"A LinuxRouter connecting three IP subnets"
|
||||
|
||||
def build( self, **_opts ):
|
||||
|
||||
defaultIP = '192.168.1.1/24' # IP address for r0-eth1
|
||||
router = self.addNode( 'r0', cls=LinuxRouter, ip=defaultIP )
|
||||
|
||||
s1, s2, s3 = [ self.addSwitch( s ) for s in 's1', 's2', 's3' ]
|
||||
|
||||
self.addLink( s1, router, intfName2='r0-eth1',
|
||||
params2={ 'ip' : defaultIP } ) # for clarity
|
||||
self.addLink( s2, router, intfName2='r0-eth2',
|
||||
params2={ 'ip' : '172.16.0.1/12' } )
|
||||
self.addLink( s3, router, intfName2='r0-eth3',
|
||||
params2={ 'ip' : '10.0.0.1/8' } )
|
||||
|
||||
h1 = self.addHost( 'h1', ip='192.168.1.100/24',
|
||||
defaultRoute='via 192.168.1.1' )
|
||||
h2 = self.addHost( 'h2', ip='172.16.0.100/12',
|
||||
defaultRoute='via 172.16.0.1' )
|
||||
h3 = self.addHost( 'h3', ip='10.0.0.100/8',
|
||||
defaultRoute='via 10.0.0.1' )
|
||||
|
||||
for h, s in [ (h1, s1), (h2, s2), (h3, s3) ]:
|
||||
self.addLink( h, s )
|
||||
|
||||
|
||||
def run():
|
||||
"Test linux router"
|
||||
topo = NetworkTopo()
|
||||
net = Mininet( topo=topo ) # controller is used by s1-s3
|
||||
net.start()
|
||||
info( '*** Routing Table on Router:\n' )
|
||||
print net[ 'r0' ].cmd( 'route' )
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
run()
|
||||
+101
-2982
File diff suppressed because it is too large
Load Diff
@@ -1,134 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
Simple example of Mobility with Mininet
|
||||
(aka enough rope to hang yourself.)
|
||||
|
||||
We move a host from s1 to s2, s2 to s3, and then back to s1.
|
||||
|
||||
Gotchas:
|
||||
|
||||
The reference controller doesn't support mobility, so we need to
|
||||
manually flush the switch flow tables!
|
||||
|
||||
Good luck!
|
||||
|
||||
to-do:
|
||||
|
||||
- think about wifi/hub behavior
|
||||
- think about clearing last hop - why doesn't that work?
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import OVSSwitch
|
||||
from mininet.topo import LinearTopo
|
||||
from mininet.log import output, warn
|
||||
|
||||
from random import randint
|
||||
|
||||
|
||||
class MobilitySwitch( OVSSwitch ):
|
||||
"Switch that can reattach and rename interfaces"
|
||||
|
||||
def delIntf( self, intf ):
|
||||
"Remove (and detach) an interface"
|
||||
port = self.ports[ intf ]
|
||||
del self.ports[ intf ]
|
||||
del self.intfs[ port ]
|
||||
del self.nameToIntf[ intf.name ]
|
||||
|
||||
def addIntf( self, intf, rename=False, **kwargs ):
|
||||
"Add (and reparent) an interface"
|
||||
OVSSwitch.addIntf( self, intf, **kwargs )
|
||||
intf.node = self
|
||||
if rename:
|
||||
self.renameIntf( intf )
|
||||
|
||||
def attach( self, intf ):
|
||||
"Attach an interface and set its port"
|
||||
port = self.ports[ intf ]
|
||||
if port:
|
||||
if self.isOldOVS():
|
||||
self.cmd( 'ovs-vsctl add-port', self, intf )
|
||||
else:
|
||||
self.cmd( 'ovs-vsctl add-port', self, intf,
|
||||
'-- set Interface', intf,
|
||||
'ofport_request=%s' % port )
|
||||
self.validatePort( intf )
|
||||
|
||||
def validatePort( self, intf ):
|
||||
"Validate intf's OF port number"
|
||||
ofport = int( self.cmd( 'ovs-vsctl get Interface', intf,
|
||||
'ofport' ) )
|
||||
if ofport != self.ports[ intf ]:
|
||||
warn( 'WARNING: ofport for', intf, 'is actually', ofport,
|
||||
'\n' )
|
||||
|
||||
def renameIntf( self, intf, newname='' ):
|
||||
"Rename an interface (to its canonical name)"
|
||||
intf.ifconfig( 'down' )
|
||||
if not newname:
|
||||
newname = '%s-eth%d' % ( self.name, self.ports[ intf ] )
|
||||
intf.cmd( 'ip link set', intf, 'name', newname )
|
||||
del self.nameToIntf[ intf.name ]
|
||||
intf.name = newname
|
||||
self.nameToIntf[ intf.name ] = intf
|
||||
intf.ifconfig( 'up' )
|
||||
|
||||
def moveIntf( self, intf, switch, port=None, rename=True ):
|
||||
"Move one of our interfaces to another switch"
|
||||
self.detach( intf )
|
||||
self.delIntf( intf )
|
||||
switch.addIntf( intf, port=port, rename=rename )
|
||||
switch.attach( intf )
|
||||
|
||||
|
||||
def printConnections( switches ):
|
||||
"Compactly print connected nodes to each switch"
|
||||
for sw in switches:
|
||||
output( '%s: ' % sw )
|
||||
for intf in sw.intfList():
|
||||
link = intf.link
|
||||
if link:
|
||||
intf1, intf2 = link.intf1, link.intf2
|
||||
remote = intf1 if intf1.node != sw else intf2
|
||||
output( '%s(%s) ' % ( remote.node, sw.ports[ intf ] ) )
|
||||
output( '\n' )
|
||||
|
||||
|
||||
def moveHost( host, oldSwitch, newSwitch, newPort=None ):
|
||||
"Move a host from old switch to new switch"
|
||||
hintf, sintf = host.connectionsTo( oldSwitch )[ 0 ]
|
||||
oldSwitch.moveIntf( sintf, newSwitch, port=newPort )
|
||||
return hintf, sintf
|
||||
|
||||
|
||||
def mobilityTest():
|
||||
"A simple test of mobility"
|
||||
print '* Simple mobility test'
|
||||
net = Mininet( topo=LinearTopo( 3 ), switch=MobilitySwitch )
|
||||
print '* Starting network:'
|
||||
net.start()
|
||||
printConnections( net.switches )
|
||||
print '* Testing network'
|
||||
net.pingAll()
|
||||
print '* Identifying switch interface for h1'
|
||||
h1, old = net.get( 'h1', 's1' )
|
||||
for s in 2, 3, 1:
|
||||
new = net[ 's%d' % s ]
|
||||
port = randint( 10, 20 )
|
||||
print '* Moving', h1, 'from', old, 'to', new, 'port', port
|
||||
hintf, sintf = moveHost( h1, old, new, newPort=port )
|
||||
print '*', hintf, 'is now connected to', sintf
|
||||
print '* Clearing out old flows'
|
||||
for sw in net.switches:
|
||||
sw.dpctl( 'del-flows' )
|
||||
print '* New network:'
|
||||
printConnections( net.switches )
|
||||
print '* Testing connectivity:'
|
||||
net.pingAll()
|
||||
old = new
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
mobilityTest()
|
||||
@@ -1,36 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
This is a simple example that demonstrates multiple links
|
||||
between nodes.
|
||||
"""
|
||||
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import setLogLevel
|
||||
from mininet.net import Mininet
|
||||
from mininet.topo import Topo
|
||||
|
||||
def runMultiLink():
|
||||
"Create and run multiple link network"
|
||||
topo = simpleMultiLinkTopo( n=2 )
|
||||
net = Mininet( topo=topo )
|
||||
net.start()
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
class simpleMultiLinkTopo( Topo ):
|
||||
"Simple topology with multiple links"
|
||||
|
||||
def __init__( self, n, **kwargs ):
|
||||
Topo.__init__( self, **kwargs )
|
||||
|
||||
h1, h2 = self.addHost( 'h1' ), self.addHost( 'h2' )
|
||||
s1 = self.addSwitch( 's1' )
|
||||
|
||||
for _ in range( n ):
|
||||
self.addLink( s1, h1 )
|
||||
self.addLink( s1, h2 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
runMultiLink()
|
||||
@@ -1,275 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
Multiple ovsdb OVS!!
|
||||
|
||||
We scale up by creating multiple ovsdb instances,
|
||||
each of which is shared by several OVS switches
|
||||
|
||||
The shell may also be shared among switch instances,
|
||||
which causes switch.cmd() and switch.popen() to be
|
||||
delegated to the ovsdb instance.
|
||||
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import Node, OVSSwitch
|
||||
from mininet.node import OVSBridge
|
||||
from mininet.link import Link, OVSIntf
|
||||
from mininet.topo import LinearTopo, SingleSwitchTopo
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.log import setLogLevel, info
|
||||
from mininet.cli import CLI
|
||||
from mininet.clean import Cleanup, sh
|
||||
|
||||
from itertools import groupby
|
||||
from operator import attrgetter
|
||||
|
||||
class OVSDB( Node ):
|
||||
"Namespace for an OVSDB instance"
|
||||
|
||||
privateDirs = [ '/etc/openvswitch',
|
||||
'/var/run/openvswitch',
|
||||
'/var/log/openvswitch' ]
|
||||
|
||||
# Control network
|
||||
ipBase = '172.123.123.0/24'
|
||||
cnet = None
|
||||
nat = None
|
||||
|
||||
@classmethod
|
||||
def startControlNet( cls ):
|
||||
"Start control net if necessary and return it"
|
||||
cnet = cls.cnet
|
||||
if not cnet:
|
||||
info( '### Starting control network\n' )
|
||||
cnet = Mininet( ipBase=cls.ipBase )
|
||||
cswitch = cnet.addSwitch( 'ovsbr0', cls=OVSBridge )
|
||||
# Add NAT - note this can conflict with data network NAT
|
||||
info( '### Adding NAT for control and data networks'
|
||||
' (use --nat flush=0 for data network)\n' )
|
||||
cls.cnet = cnet
|
||||
cls.nat = cnet.addNAT( 'ovsdbnat0')
|
||||
cnet.start()
|
||||
info( '### Control network started\n' )
|
||||
return cnet
|
||||
|
||||
def stopControlNet( self ):
|
||||
info( '\n### Stopping control network\n' )
|
||||
cls = self.__class__
|
||||
cls.cnet.stop()
|
||||
info( '### Control network stopped\n' )
|
||||
|
||||
def addSwitch( self, switch ):
|
||||
"Add a switch to our namespace"
|
||||
# Attach first switch to cswitch!
|
||||
self.switches.append( switch )
|
||||
|
||||
def delSwitch( self, switch ):
|
||||
"Delete a switch from our namespace, and terminate if none left"
|
||||
self.switches.remove( switch )
|
||||
if not self.switches:
|
||||
self.stopOVS()
|
||||
|
||||
ovsdbCount = 0
|
||||
|
||||
def startOVS( self ):
|
||||
"Start new OVS instance"
|
||||
self.cmd( 'ovsdb-tool create /etc/openvswitch/conf.db' )
|
||||
self.cmd( 'ovsdb-server /etc/openvswitch/conf.db'
|
||||
' -vfile:emer -vfile:err -vfile:info'
|
||||
' --remote=punix:/var/run/openvswitch/db.sock '
|
||||
' --log-file=/var/log/openvswitch/ovsdb-server.log'
|
||||
' --pidfile=/var/run/openvswitch/ovsdb-server-mn.pid'
|
||||
' --no-chdir'
|
||||
' --detach' )
|
||||
|
||||
self.cmd( 'ovs-vswitchd unix:/var/run/openvswitch/db.sock'
|
||||
' -vfile:emer -vfile:err -vfile:info'
|
||||
' --mlockall --log-file=/var/log/openvswitch/ovs-vswitchd.log'
|
||||
' --pidfile=/var/run/openvswitch/ovs-vswitchd-mn.pid'
|
||||
' --no-chdir'
|
||||
' --detach' )
|
||||
|
||||
def stopOVS( self ):
|
||||
self.cmd( 'kill',
|
||||
'`cat /var/run/openvswitch/ovs-vswitchd-mn.pid`',
|
||||
'`cat /var/run/openvswitch/ovsdb-server-mn.pid`' )
|
||||
self.cmd( 'wait' )
|
||||
self.__class__.ovsdbCount -= 1
|
||||
if self.__class__.ovsdbCount <= 0:
|
||||
self.stopControlNet()
|
||||
|
||||
@classmethod
|
||||
def cleanUpOVS( cls ):
|
||||
"Clean up leftover ovsdb-server/ovs-vswitchd processes"
|
||||
info( '*** Shutting down extra ovsdb-server/ovs-vswitchd processes\n' )
|
||||
sh( 'pkill -f mn.pid' )
|
||||
|
||||
def self( self, *args, **kwargs ):
|
||||
"A fake constructor that sets params and returns self"
|
||||
self.params = kwargs
|
||||
return self
|
||||
|
||||
def __init__( self, **kwargs ):
|
||||
cls = self.__class__
|
||||
cls.ovsdbCount += 1
|
||||
cnet = self.startControlNet()
|
||||
# Create a new ovsdb namespace
|
||||
self.switches = []
|
||||
name = 'ovsdb%d' % cls.ovsdbCount
|
||||
kwargs.update( inNamespace=True )
|
||||
kwargs.setdefault( 'privateDirs', self.privateDirs )
|
||||
super( OVSDB, self ).__init__( name, **kwargs )
|
||||
ovsdb = cnet.addHost( name, cls=self.self, **kwargs )
|
||||
link = cnet.addLink( ovsdb, cnet.switches[ 0 ] )
|
||||
cnet.switches[ 0 ].attach( link.intf2 )
|
||||
ovsdb.configDefault()
|
||||
ovsdb.setDefaultRoute( 'via %s' % self.nat.intfs[ 0 ].IP() )
|
||||
ovsdb.startOVS()
|
||||
|
||||
|
||||
# Install cleanup callback
|
||||
Cleanup.addCleanupCallback( OVSDB.cleanUpOVS )
|
||||
|
||||
|
||||
class OVSSwitchNS( OVSSwitch ):
|
||||
"OVS Switch in shared OVSNS namespace"
|
||||
|
||||
isSetup = False
|
||||
|
||||
@classmethod
|
||||
def batchStartup( cls, switches ):
|
||||
result = []
|
||||
for ovsdb, switchGroup in groupby( switches, attrgetter( 'ovsdb') ):
|
||||
switchGroup = list( switchGroup )
|
||||
info( '(%s)' % ovsdb )
|
||||
result += OVSSwitch.batchStartup( switchGroup, run=ovsdb.cmd )
|
||||
return result
|
||||
|
||||
@classmethod
|
||||
def batchShutdown( cls, switches ):
|
||||
result = []
|
||||
for ovsdb, switchGroup in groupby( switches, attrgetter( 'ovsdb') ):
|
||||
switchGroup = list( switchGroup )
|
||||
info( '(%s)' % ovsdb )
|
||||
for switch in switches:
|
||||
if switch.pid == ovsdb.pid:
|
||||
switch.pid = None
|
||||
switch.shell = None
|
||||
result += OVSSwitch.batchShutdown( switchGroup, run=ovsdb.cmd )
|
||||
for switch in switchGroup:
|
||||
switch.ovsdbFree()
|
||||
return result
|
||||
|
||||
# OVSDB allocation
|
||||
groupSize = 64
|
||||
switchCount = 0
|
||||
lastOvsdb = None
|
||||
|
||||
@classmethod
|
||||
def ovsdbAlloc( cls, switch ):
|
||||
"Allocate (possibly new) OVSDB instance for switch"
|
||||
if cls.switchCount % switch.groupSize == 0:
|
||||
cls.lastOvsdb = OVSDB()
|
||||
cls.switchCount += 1
|
||||
cls.lastOvsdb.addSwitch( switch )
|
||||
return cls.lastOvsdb
|
||||
|
||||
def ovsdbFree( self ):
|
||||
"Deallocate OVSDB instance for switch"
|
||||
self.ovsdb.delSwitch( self )
|
||||
|
||||
def startShell( self, *args, **kwargs ):
|
||||
"Start shell in shared OVSDB namespace"
|
||||
ovsdb = self.ovsdbAlloc( self )
|
||||
kwargs.update( mnopts='-da %d ' % ovsdb.pid )
|
||||
self.ns = [ 'net' ]
|
||||
self.ovsdb = ovsdb
|
||||
self._waiting = False
|
||||
if self.privateShell:
|
||||
super( OVSSwitchNS, self ).startShell( *args, **kwargs )
|
||||
else:
|
||||
# Delegate methods and initialize local vars
|
||||
attrs = ( 'cmd', 'cmdPrint', 'sendCmd', 'waitOutput',
|
||||
'monitor', 'write', 'read',
|
||||
'pid', 'shell', 'stdout',)
|
||||
for attr in attrs:
|
||||
setattr( self, attr, getattr( ovsdb, attr ) )
|
||||
self.defaultIntf().updateIP()
|
||||
|
||||
@property
|
||||
def waiting( self ):
|
||||
"Optionally delegated to ovsdb"
|
||||
return self._waiting if self.privateShell else self.ovsdb.waiting
|
||||
|
||||
@waiting.setter
|
||||
def waiting( self, value ):
|
||||
"Optionally delegated to ovsdb (read only!)"
|
||||
if self.privateShell:
|
||||
_waiting = value
|
||||
|
||||
def start( self, controllers ):
|
||||
"Update controller IP addresses if necessary"
|
||||
for controller in controllers:
|
||||
if controller.IP() == '127.0.0.1' and not controller.intfs:
|
||||
controller.intfs[ 0 ] = self.ovsdb.nat.intfs[ 0 ]
|
||||
super( OVSSwitchNS, self ).start( controllers )
|
||||
|
||||
def stop( self, *args, **kwargs ):
|
||||
"Stop and free OVSDB namespace if necessary"
|
||||
self.ovsdbFree()
|
||||
|
||||
def terminate( self, *args, **kwargs ):
|
||||
if self.privateShell:
|
||||
super( OVSSwitchNS, self ).terminate( *args, **kwargs )
|
||||
else:
|
||||
self.pid = None
|
||||
self.shell= None
|
||||
|
||||
def defaultIntf( self ):
|
||||
return self.ovsdb.defaultIntf()
|
||||
|
||||
def __init__( self, *args, **kwargs ):
|
||||
"""n: number of OVS instances per OVSDB
|
||||
shell: run private shell/bash process? (False)
|
||||
If shell is shared/not private, cmd() and popen() are
|
||||
delegated to the OVSDB instance, which is different than
|
||||
regular OVSSwitch semantics!!"""
|
||||
self.groupSize = kwargs.pop( 'n', self.groupSize )
|
||||
self.privateShell = kwargs.pop( 'shell', False )
|
||||
super( OVSSwitchNS, self ).__init__( *args, **kwargs )
|
||||
|
||||
|
||||
class OVSLinkNS( Link ):
|
||||
"OVSLink that supports OVSSwitchNS"
|
||||
|
||||
def __init__( self, node1, node2, **kwargs ):
|
||||
"See Link.__init__() for options"
|
||||
self.isPatchLink = False
|
||||
if ( isinstance( node1, OVSSwitch ) and
|
||||
isinstance( node2, OVSSwitch ) and
|
||||
getattr( node1, 'ovsdb', None ) ==
|
||||
getattr( node2, 'ovsdb', None ) ):
|
||||
self.isPatchLink = True
|
||||
kwargs.update( cls1=OVSIntf, cls2=OVSIntf )
|
||||
Link.__init__( self, node1, node2, **kwargs )
|
||||
|
||||
switches = { 'ovsns': OVSSwitchNS, 'ovsm': OVSSwitchNS }
|
||||
|
||||
links = { 'ovs': OVSLinkNS }
|
||||
|
||||
def test():
|
||||
"Test OVSNS switch"
|
||||
setLogLevel( 'info' )
|
||||
topo = TreeTopo( depth=4, fanout=2 )
|
||||
net = Mininet( topo=topo, switch=OVSSwitchNS )
|
||||
# Add connectivity to controller which is on LAN or in root NS
|
||||
# net.addNAT().configDefault()
|
||||
net.start()
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
test()
|
||||
@@ -18,13 +18,18 @@ from time import time
|
||||
|
||||
def chunks( l, n ):
|
||||
"Divide list l into chunks of size n - thanks Stackoverflow"
|
||||
return [ l[ i: i + n ] for i in range( 0, len( l ), n ) ]
|
||||
return [ l[ i : i + n ] for i in range( 0, len( l ), n ) ]
|
||||
|
||||
def startpings( host, targetips ):
|
||||
"Tell host to repeatedly ping targets"
|
||||
|
||||
targetips.append( '10.0.0.200' )
|
||||
|
||||
targetips = ' '.join( targetips )
|
||||
|
||||
# BL: Not sure why loopback intf isn't up!
|
||||
host.cmd( 'ifconfig lo up' )
|
||||
|
||||
# Simple ping loop
|
||||
cmd = ( 'while true; do '
|
||||
' for ip in %s; do ' % targetips +
|
||||
@@ -35,7 +40,7 @@ def startpings( host, targetips ):
|
||||
'done &' )
|
||||
|
||||
print ( '*** Host %s (%s) will be pinging ips: %s' %
|
||||
( host.name, host.IP(), targetips ) )
|
||||
( host.name, host.IP(), targetips ) )
|
||||
|
||||
host.cmd( cmd )
|
||||
|
||||
@@ -58,8 +63,6 @@ def multiping( netsize, chunksize, seconds):
|
||||
# Start pings
|
||||
for subnet in subnets:
|
||||
ips = [ host.IP() for host in subnet ]
|
||||
#adding bogus to generate packet loss
|
||||
ips.append( '10.0.0.200' )
|
||||
for host in subnet:
|
||||
startpings( host, ips )
|
||||
|
||||
|
||||
@@ -19,7 +19,7 @@ def monitorFiles( outfiles, seconds, timeoutms ):
|
||||
tails, fdToFile, fdToHost = {}, {}, {}
|
||||
for h, outfile in outfiles.iteritems():
|
||||
tail = Popen( [ 'tail', '-f', outfile ],
|
||||
stdout=PIPE, stderr=devnull )
|
||||
stdout=PIPE, stderr=devnull )
|
||||
fd = tail.stdout.fileno()
|
||||
tails[ h ] = tail
|
||||
fdToFile[ fd ] = tail.stdout
|
||||
|
||||
@@ -22,7 +22,7 @@ if __name__ == '__main__':
|
||||
info( "*** Initializing Mininet and kernel modules\n" )
|
||||
OVSKernelSwitch.setup()
|
||||
info( "*** Creating network\n" )
|
||||
network = Mininet( TreeTopo( depth=2, fanout=2 ), switch=OVSKernelSwitch )
|
||||
network = Mininet( TreeTopo( depth=2, fanout=2 ), switch=OVSKernelSwitch)
|
||||
info( "*** Starting network\n" )
|
||||
network.start()
|
||||
info( "*** Running ping test\n" )
|
||||
|
||||
-112
@@ -1,112 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
Example to create a Mininet topology and connect it to the internet via NAT
|
||||
through eth0 on the host.
|
||||
|
||||
Glen Gibb, February 2011
|
||||
|
||||
(slight modifications by BL, 5/13)
|
||||
"""
|
||||
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import lg
|
||||
from mininet.node import Node
|
||||
from mininet.topolib import TreeNet
|
||||
|
||||
#################################
|
||||
def startNAT( root, inetIntf='eth0', subnet='10.0/8' ):
|
||||
"""Start NAT/forwarding between Mininet and external network
|
||||
root: node to access iptables from
|
||||
inetIntf: interface for internet access
|
||||
subnet: Mininet subnet (default 10.0/8)="""
|
||||
|
||||
# Identify the interface connecting to the mininet network
|
||||
localIntf = root.defaultIntf()
|
||||
|
||||
# Flush any currently active rules
|
||||
root.cmd( 'iptables -F' )
|
||||
root.cmd( 'iptables -t nat -F' )
|
||||
|
||||
# Create default entries for unmatched traffic
|
||||
root.cmd( 'iptables -P INPUT ACCEPT' )
|
||||
root.cmd( 'iptables -P OUTPUT ACCEPT' )
|
||||
root.cmd( 'iptables -P FORWARD DROP' )
|
||||
|
||||
# Configure NAT
|
||||
root.cmd( 'iptables -I FORWARD -i', localIntf, '-d', subnet, '-j DROP' )
|
||||
root.cmd( 'iptables -A FORWARD -i', localIntf, '-s', subnet, '-j ACCEPT' )
|
||||
root.cmd( 'iptables -A FORWARD -i', inetIntf, '-d', subnet, '-j ACCEPT' )
|
||||
root.cmd( 'iptables -t nat -A POSTROUTING -o ', inetIntf, '-j MASQUERADE' )
|
||||
|
||||
# Instruct the kernel to perform forwarding
|
||||
root.cmd( 'sysctl net.ipv4.ip_forward=1' )
|
||||
|
||||
def stopNAT( root ):
|
||||
"""Stop NAT/forwarding between Mininet and external network"""
|
||||
# Flush any currently active rules
|
||||
root.cmd( 'iptables -F' )
|
||||
root.cmd( 'iptables -t nat -F' )
|
||||
|
||||
# Instruct the kernel to stop forwarding
|
||||
root.cmd( 'sysctl net.ipv4.ip_forward=0' )
|
||||
|
||||
def fixNetworkManager( root, intf ):
|
||||
"""Prevent network-manager from messing with our interface,
|
||||
by specifying manual configuration in /etc/network/interfaces
|
||||
root: a node in the root namespace (for running commands)
|
||||
intf: interface name"""
|
||||
cfile = '/etc/network/interfaces'
|
||||
line = '\niface %s inet manual\n' % intf
|
||||
config = open( cfile ).read()
|
||||
if line not in config:
|
||||
print '*** Adding', line.strip(), 'to', cfile
|
||||
with open( cfile, 'a' ) as f:
|
||||
f.write( line )
|
||||
# Probably need to restart network-manager to be safe -
|
||||
# hopefully this won't disconnect you
|
||||
root.cmd( 'service network-manager restart' )
|
||||
|
||||
def connectToInternet( network, switch='s1', rootip='10.254', subnet='10.0/8'):
|
||||
"""Connect the network to the internet
|
||||
switch: switch to connect to root namespace
|
||||
rootip: address for interface in root namespace
|
||||
subnet: Mininet subnet"""
|
||||
switch = network.get( switch )
|
||||
prefixLen = subnet.split( '/' )[ 1 ]
|
||||
|
||||
# Create a node in root namespace
|
||||
root = Node( 'root', inNamespace=False )
|
||||
|
||||
# Prevent network-manager from interfering with our interface
|
||||
fixNetworkManager( root, 'root-eth0' )
|
||||
|
||||
# Create link between root NS and switch
|
||||
link = network.addLink( root, switch )
|
||||
link.intf1.setIP( rootip, prefixLen )
|
||||
|
||||
# Start network that now includes link to root namespace
|
||||
network.start()
|
||||
|
||||
# Start NAT and establish forwarding
|
||||
startNAT( root )
|
||||
|
||||
# Establish routes from end hosts
|
||||
for host in network.hosts:
|
||||
host.cmd( 'ip route flush root 0/0' )
|
||||
host.cmd( 'route add -net', subnet, 'dev', host.defaultIntf() )
|
||||
host.cmd( 'route add default gw', rootip )
|
||||
|
||||
return root
|
||||
|
||||
if __name__ == '__main__':
|
||||
lg.setLogLevel( 'info')
|
||||
net = TreeNet( depth=1, fanout=4 )
|
||||
# Configure and start NATted connectivity
|
||||
rootnode = connectToInternet( net )
|
||||
print "*** Hosts are running and should have internet connectivity"
|
||||
print "*** Type 'exit' or control-D to shut down network"
|
||||
CLI( net )
|
||||
# Shut down NAT
|
||||
stopNAT( rootnode )
|
||||
net.stop()
|
||||
@@ -1,69 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
natnet.py: Example network with NATs
|
||||
|
||||
|
||||
h0
|
||||
|
|
||||
s0
|
||||
|
|
||||
----------------
|
||||
| |
|
||||
nat1 nat2
|
||||
| |
|
||||
s1 s2
|
||||
| |
|
||||
h1 h2
|
||||
|
||||
"""
|
||||
|
||||
from mininet.topo import Topo
|
||||
from mininet.net import Mininet
|
||||
from mininet.nodelib import NAT
|
||||
from mininet.log import setLogLevel
|
||||
from mininet.cli import CLI
|
||||
from mininet.util import irange
|
||||
|
||||
class InternetTopo(Topo):
|
||||
"Single switch connected to n hosts."
|
||||
def __init__(self, n=2, **opts):
|
||||
Topo.__init__(self, **opts)
|
||||
|
||||
# set up inet switch
|
||||
inetSwitch = self.addSwitch('s0')
|
||||
# add inet host
|
||||
inetHost = self.addHost('h0')
|
||||
self.addLink(inetSwitch, inetHost)
|
||||
|
||||
# add local nets
|
||||
for i in irange(1, n):
|
||||
inetIntf = 'nat%d-eth0' % i
|
||||
localIntf = 'nat%d-eth1' % i
|
||||
localIP = '192.168.%d.1' % i
|
||||
localSubnet = '192.168.%d.0/24' % i
|
||||
natParams = { 'ip' : '%s/24' % localIP }
|
||||
# add NAT to topology
|
||||
nat = self.addNode('nat%d' % i, cls=NAT, subnet=localSubnet,
|
||||
inetIntf=inetIntf, localIntf=localIntf)
|
||||
switch = self.addSwitch('s%d' % i)
|
||||
# connect NAT to inet and local switches
|
||||
self.addLink(nat, inetSwitch, intfName1=inetIntf)
|
||||
self.addLink(nat, switch, intfName1=localIntf, params1=natParams)
|
||||
# add host and connect to local switch
|
||||
host = self.addHost('h%d' % i,
|
||||
ip='192.168.%d.100/24' % i,
|
||||
defaultRoute='via %s' % localIP)
|
||||
self.addLink(host, switch)
|
||||
|
||||
def run():
|
||||
"Create network and run the CLI"
|
||||
topo = InternetTopo()
|
||||
net = Mininet(topo=topo)
|
||||
net.start()
|
||||
CLI(net)
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel('info')
|
||||
run()
|
||||
@@ -1,79 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
Create a network with 5 hosts, numbered 1-4 and 9.
|
||||
Validate that the port numbers match to the interface name,
|
||||
and that the ovs ports match the mininet ports.
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import Controller
|
||||
from mininet.log import setLogLevel, info, warn
|
||||
|
||||
def validatePort( switch, intf ):
|
||||
"Validate intf's OF port number"
|
||||
ofport = int( switch.cmd( 'ovs-vsctl get Interface', intf,
|
||||
'ofport' ) )
|
||||
if ofport != switch.ports[ intf ]:
|
||||
warn( 'WARNING: ofport for', intf, 'is actually', ofport, '\n' )
|
||||
return 0
|
||||
else:
|
||||
return 1
|
||||
|
||||
def testPortNumbering():
|
||||
|
||||
"""Test port numbering:
|
||||
Create a network with 5 hosts (using Mininet's
|
||||
mid-level API) and check that implicit and
|
||||
explicit port numbering works as expected."""
|
||||
|
||||
net = Mininet( controller=Controller )
|
||||
|
||||
info( '*** Adding controller\n' )
|
||||
net.addController( 'c0' )
|
||||
|
||||
info( '*** Adding hosts\n' )
|
||||
h1 = net.addHost( 'h1', ip='10.0.0.1' )
|
||||
h2 = net.addHost( 'h2', ip='10.0.0.2' )
|
||||
h3 = net.addHost( 'h3', ip='10.0.0.3' )
|
||||
h4 = net.addHost( 'h4', ip='10.0.0.4' )
|
||||
h5 = net.addHost( 'h5', ip='10.0.0.5' )
|
||||
|
||||
info( '*** Adding switch\n' )
|
||||
s1 = net.addSwitch( 's1' )
|
||||
|
||||
info( '*** Creating links\n' )
|
||||
# host 1-4 connect to ports 1-4 on the switch
|
||||
net.addLink( h1, s1 )
|
||||
net.addLink( h2, s1 )
|
||||
net.addLink( h3, s1 )
|
||||
net.addLink( h4, s1 )
|
||||
# specify a different port to connect host 5 to on the switch.
|
||||
net.addLink( h5, s1, port1=1, port2= 9)
|
||||
|
||||
info( '*** Starting network\n' )
|
||||
net.start()
|
||||
|
||||
# print the interfaces and their port numbers
|
||||
info( '\n*** printing and validating the ports '
|
||||
'running on each interface\n' )
|
||||
for intfs in s1.intfList():
|
||||
if not intfs.name == "lo":
|
||||
info( intfs, ': ', s1.ports[intfs],
|
||||
'\n' )
|
||||
info( 'Validating that', intfs,
|
||||
'is actually on port', s1.ports[intfs], '... ' )
|
||||
if validatePort( s1, intfs ):
|
||||
info( 'Validated.\n' )
|
||||
print '\n'
|
||||
|
||||
# test the network with pingall
|
||||
net.pingAll()
|
||||
print '\n'
|
||||
|
||||
info( '*** Stopping network' )
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
testPortNumbering()
|
||||
@@ -1,36 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"""
|
||||
This example monitors a number of hosts using host.popen() and
|
||||
pmonitor()
|
||||
"""
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.node import CPULimitedHost
|
||||
from mininet.topo import SingleSwitchTopo
|
||||
from mininet.log import setLogLevel
|
||||
from mininet.util import custom, pmonitor
|
||||
|
||||
def monitorhosts( hosts=5, sched='cfs' ):
|
||||
"Start a bunch of pings and monitor them using popen"
|
||||
mytopo = SingleSwitchTopo( hosts )
|
||||
cpu = .5 / hosts
|
||||
myhost = custom( CPULimitedHost, cpu=cpu, sched=sched )
|
||||
net = Mininet( topo=mytopo, host=myhost )
|
||||
net.start()
|
||||
# Start a bunch of pings
|
||||
popens = {}
|
||||
last = net.hosts[ -1 ]
|
||||
for host in net.hosts:
|
||||
popens[ host ] = host.popen( "ping -c5 %s" % last.IP() )
|
||||
last = host
|
||||
# Monitor them and print output
|
||||
for host, line in pmonitor( popens ):
|
||||
if host:
|
||||
print "<%s>: %s" % ( host.name, line.strip() )
|
||||
# Done
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
monitorhosts( hosts=5 )
|
||||
@@ -1,33 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
|
||||
"Monitor multiple hosts using popen()/pmonitor()"
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.topo import SingleSwitchTopo
|
||||
from mininet.util import pmonitor
|
||||
from time import time
|
||||
from signal import SIGINT
|
||||
|
||||
def pmonitorTest( N=3, seconds=10 ):
|
||||
"Run pings and monitor multiple hosts using pmonitor"
|
||||
topo = SingleSwitchTopo( N )
|
||||
net = Mininet( topo )
|
||||
net.start()
|
||||
hosts = net.hosts
|
||||
print "Starting test..."
|
||||
server = hosts[ 0 ]
|
||||
popens = {}
|
||||
for h in hosts:
|
||||
popens[ h ] = h.popen('ping', server.IP() )
|
||||
print "Monitoring output for", seconds, "seconds"
|
||||
endTime = time() + seconds
|
||||
for h, line in pmonitor( popens, timeoutms=500 ):
|
||||
if h:
|
||||
print '<%s>: %s' % ( h.name, line ),
|
||||
if time() >= endTime:
|
||||
for p in popens.values():
|
||||
p.send_signal( SIGINT )
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
pmonitorTest()
|
||||
@@ -38,12 +38,12 @@ def scratchNetUser( cname='controller', cargs='ptcp:' ):
|
||||
h1intf, sintf2 = linkIntfs( h1, switch )
|
||||
|
||||
info( '*** Configuring control network\n' )
|
||||
controller.setIP( '10.0.123.1/24', intf=cintf )
|
||||
switch.setIP( '10.0.123.2/24', intf=sintf)
|
||||
controller.setIP( '10.0.123.1/24', cintf )
|
||||
switch.setIP( '10.0.123.2/24', sintf)
|
||||
|
||||
info( '*** Configuring hosts\n' )
|
||||
h0.setIP( '192.168.123.1/24', intf=h0intf )
|
||||
h1.setIP( '192.168.123.2/24', intf=h1intf )
|
||||
h0.setIP( '192.168.123.1/24', h0intf )
|
||||
h1.setIP( '192.168.123.2/24', h1intf )
|
||||
|
||||
info( '*** Network state:\n' )
|
||||
for node in controller, switch, h0, h1:
|
||||
|
||||
Executable → Regular
+11
-15
@@ -2,11 +2,6 @@
|
||||
|
||||
"""
|
||||
Simple example of setting network and CPU parameters
|
||||
|
||||
NOTE: link params limit BW, add latency, and loss.
|
||||
There is a high chance that pings WILL fail and that
|
||||
iperf will hang indefinitely if the TCP handshake fails
|
||||
to complete.
|
||||
"""
|
||||
|
||||
from mininet.topo import Topo
|
||||
@@ -20,27 +15,28 @@ class SingleSwitchTopo(Topo):
|
||||
"Single switch connected to n hosts."
|
||||
def __init__(self, n=2, **opts):
|
||||
Topo.__init__(self, **opts)
|
||||
switch = self.addSwitch('s1')
|
||||
switch = self.add_switch('s1')
|
||||
for h in range(n):
|
||||
# Each host gets 50%/n of system CPU
|
||||
host = self.addHost('h%s' % (h + 1),
|
||||
cpu=.5 / n)
|
||||
host = self.add_host('h%s' % (h + 1),
|
||||
cpu=.5 / n)
|
||||
# 10 Mbps, 5ms delay, 10% loss
|
||||
self.addLink(host, switch,
|
||||
bw=10, delay='5ms', loss=10, use_htb=True)
|
||||
self.add_link(host, switch,
|
||||
bw=10, delay='5ms', loss=10, use_htb=True)
|
||||
|
||||
def perfTest():
|
||||
"Create network and run simple performance test"
|
||||
topo = SingleSwitchTopo( n=4 )
|
||||
net = Mininet( topo=topo,
|
||||
host=CPULimitedHost, link=TCLink,
|
||||
autoStaticArp=True )
|
||||
topo = SingleSwitchTopo(n=4)
|
||||
net = Mininet(topo=topo,
|
||||
host=CPULimitedHost, link=TCLink)
|
||||
net.start()
|
||||
print "Dumping host connections"
|
||||
dumpNodeConnections(net.hosts)
|
||||
print "Testing network connectivity"
|
||||
net.pingAll()
|
||||
print "Testing bandwidth between h1 and h4"
|
||||
h1, h4 = net.getNodeByName('h1', 'h4')
|
||||
net.iperf( ( h1, h4 ), l4Type='UDP' )
|
||||
net.iperf((h1, h4))
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
|
||||
+14
-28
@@ -16,53 +16,43 @@ demonstrates:
|
||||
- running server processes (sshd in this case) on hosts
|
||||
"""
|
||||
|
||||
import sys
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import lg
|
||||
from mininet.node import Node
|
||||
from mininet.node import Node, OVSKernelSwitch
|
||||
from mininet.topolib import TreeTopo
|
||||
from mininet.util import waitListening
|
||||
from mininet.link import Link
|
||||
|
||||
def TreeNet( depth=1, fanout=2, **kwargs ):
|
||||
"Convenience function for creating tree networks."
|
||||
topo = TreeTopo( depth, fanout )
|
||||
return Mininet( topo, **kwargs )
|
||||
|
||||
def connectToRootNS( network, switch, ip, routes ):
|
||||
def connectToRootNS( network, switch, ip, prefixLen, routes ):
|
||||
"""Connect hosts to root namespace via switch. Starts network.
|
||||
network: Mininet() network object
|
||||
switch: switch to connect to root namespace
|
||||
ip: IP address for root namespace node
|
||||
prefixLen: IP address prefix length (e.g. 8, 16, 24)
|
||||
routes: host networks to route to"""
|
||||
# Create a node in root namespace and link to switch 0
|
||||
root = Node( 'root', inNamespace=False )
|
||||
intf = network.addLink( root, switch ).intf1
|
||||
root.setIP( ip, intf=intf )
|
||||
intf = Link( root, switch ).intf1
|
||||
root.setIP( ip, prefixLen, intf )
|
||||
# Start network that now includes link to root namespace
|
||||
network.start()
|
||||
# Add routes from root ns to hosts
|
||||
for route in routes:
|
||||
root.cmd( 'route add -net ' + route + ' dev ' + str( intf ) )
|
||||
|
||||
def sshd( network, cmd='/usr/sbin/sshd', opts='-D',
|
||||
ip='10.123.123.1/32', routes=None, switch=None ):
|
||||
"""Start a network, connect it to root ns, and run sshd on all hosts.
|
||||
ip: root-eth0 IP address in root namespace (10.123.123.1/32)
|
||||
routes: Mininet host networks to route to (10.0/24)
|
||||
switch: Mininet switch to connect to root namespace (s1)"""
|
||||
if not switch:
|
||||
switch = network[ 's1' ] # switch to use
|
||||
if not routes:
|
||||
routes = [ '10.0.0.0/24' ]
|
||||
connectToRootNS( network, switch, ip, routes )
|
||||
def sshd( network, cmd='/usr/sbin/sshd', opts='-D' ):
|
||||
"Start a network, connect it to root ns, and run sshd on all hosts."
|
||||
switch = network.switches[ 0 ] # switch to use
|
||||
ip = '10.123.123.1' # our IP address on host network
|
||||
routes = [ '10.0.0.0/8' ] # host networks to route to
|
||||
connectToRootNS( network, switch, ip, 8, routes )
|
||||
for host in network.hosts:
|
||||
host.cmd( cmd + ' ' + opts + '&' )
|
||||
print "*** Waiting for ssh daemons to start"
|
||||
for server in network.hosts:
|
||||
waitListening( server=server, port=22, timeout=5 )
|
||||
|
||||
print
|
||||
print "*** Hosts are running sshd at the following addresses:"
|
||||
print
|
||||
@@ -77,9 +67,5 @@ def sshd( network, cmd='/usr/sbin/sshd', opts='-D',
|
||||
|
||||
if __name__ == '__main__':
|
||||
lg.setLogLevel( 'info')
|
||||
net = TreeNet( depth=1, fanout=4 )
|
||||
# get sshd args from the command line or use default args
|
||||
# useDNS=no -u0 to avoid reverse DNS lookup timeout
|
||||
argvopts = ' '.join( sys.argv[ 1: ] ) if len( sys.argv ) > 1 else (
|
||||
'-D -o UseDNS=no -u0' )
|
||||
sshd( net, opts=argvopts )
|
||||
net = TreeNet( depth=1, fanout=4, switch=OVSKernelSwitch )
|
||||
sshd( net )
|
||||
|
||||
@@ -1,41 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Run all mininet.examples tests
|
||||
-v : verbose output
|
||||
-quick : skip tests that take more than ~30 seconds
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import os
|
||||
import sys
|
||||
from mininet.util import ensureRoot
|
||||
from mininet.clean import cleanup
|
||||
|
||||
class MininetTestResult( unittest.TextTestResult ):
|
||||
def addFailure( self, test, err ):
|
||||
super( MininetTestResult, self ).addFailure( test, err )
|
||||
cleanup()
|
||||
def addError( self,test, err ):
|
||||
super( MininetTestResult, self ).addError( test, err )
|
||||
cleanup()
|
||||
|
||||
class MininetTestRunner( unittest.TextTestRunner ):
|
||||
def _makeResult( self ):
|
||||
return MininetTestResult( self.stream, self.descriptions, self.verbosity )
|
||||
|
||||
def runTests( testDir, verbosity=1 ):
|
||||
"discover and run all tests in testDir"
|
||||
# ensure root and cleanup before starting tests
|
||||
ensureRoot()
|
||||
cleanup()
|
||||
# discover all tests in testDir
|
||||
testSuite = unittest.defaultTestLoader.discover( testDir )
|
||||
# run tests
|
||||
MininetTestRunner( verbosity=verbosity ).run( testSuite )
|
||||
|
||||
if __name__ == '__main__':
|
||||
# get the directory containing example tests
|
||||
testDir = os.path.dirname( os.path.realpath( __file__ ) )
|
||||
verbosity = 2 if '-v' in sys.argv else 1
|
||||
runTests( testDir, verbosity )
|
||||
@@ -1,64 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Tests for baresshd.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
from mininet.clean import cleanup, sh
|
||||
|
||||
class testBareSSHD( unittest.TestCase ):
|
||||
|
||||
opts = [ 'Welcome to h1', pexpect.EOF, pexpect.TIMEOUT ]
|
||||
|
||||
def connected( self ):
|
||||
"Log into ssh server, check banner, then exit"
|
||||
p = pexpect.spawn( 'ssh 10.0.0.1 -o StrictHostKeyChecking=no -i /tmp/ssh/test_rsa exit' )
|
||||
while True:
|
||||
index = p.expect( self.opts )
|
||||
if index == 0:
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def setUp( self ):
|
||||
# verify that sshd is not running
|
||||
self.assertFalse( self.connected() )
|
||||
# create public key pair for testing
|
||||
sh( 'rm -rf /tmp/ssh' )
|
||||
sh( 'mkdir /tmp/ssh' )
|
||||
sh( "ssh-keygen -t rsa -P '' -f /tmp/ssh/test_rsa" )
|
||||
sh( 'cat /tmp/ssh/test_rsa.pub >> /tmp/ssh/authorized_keys' )
|
||||
# run example with custom sshd args
|
||||
cmd = ( 'python -m mininet.examples.baresshd '
|
||||
'-o AuthorizedKeysFile=/tmp/ssh/authorized_keys '
|
||||
'-o StrictModes=no' )
|
||||
p = pexpect.spawn( cmd )
|
||||
runOpts = [ 'You may now ssh into h1 at 10.0.0.1',
|
||||
'after 5 seconds, h1 is not listening on port 22',
|
||||
pexpect.EOF, pexpect.TIMEOUT ]
|
||||
while True:
|
||||
index = p.expect( runOpts )
|
||||
if index == 0:
|
||||
break
|
||||
else:
|
||||
self.tearDown()
|
||||
self.fail( 'sshd failed to start in host h1' )
|
||||
|
||||
def testSSH( self ):
|
||||
"Simple test to verify that we can ssh into h1"
|
||||
result = False
|
||||
# try to connect up to 3 times; sshd can take a while to start
|
||||
result = self.connected()
|
||||
self.assertTrue( result )
|
||||
|
||||
def tearDown( self ):
|
||||
# kill the ssh process
|
||||
sh( "ps aux | grep 'ssh.*Banner' | awk '{ print $2 }' | xargs kill" )
|
||||
cleanup()
|
||||
# remove public key pair
|
||||
sh( 'rm -rf /tmp/ssh' )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,66 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Tests for bind.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testBind( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def setUp( self ):
|
||||
self.net = pexpect.spawn( 'python -m mininet.examples.bind' )
|
||||
self.net.expect( "Private Directories: \[([\w\s,'/]+)\]" )
|
||||
self.directories = []
|
||||
# parse directories from mn output
|
||||
for d in self.net.match.group(1).split(', '):
|
||||
self.directories.append( d.strip("'") )
|
||||
self.net.expect( self.prompt )
|
||||
self.assertTrue( len( self.directories ) > 0 )
|
||||
|
||||
def testCreateFile( self ):
|
||||
"Create a file, a.txt, in the first private directory and verify"
|
||||
fileName = 'a.txt'
|
||||
directory = self.directories[ 0 ]
|
||||
path = directory + '/' + fileName
|
||||
self.net.sendline( 'h1 touch %s; ls %s' % ( path, directory ) )
|
||||
index = self.net.expect( [ fileName, self.prompt ] )
|
||||
self.assertTrue( index == 0 )
|
||||
self.net.expect( self.prompt )
|
||||
self.net.sendline( 'h1 rm %s' % path )
|
||||
self.net.expect( self.prompt )
|
||||
|
||||
def testIsolation( self ):
|
||||
"Create a file in two hosts and verify that contents are different"
|
||||
fileName = 'b.txt'
|
||||
directory = self.directories[ 0 ]
|
||||
path = directory + '/' + fileName
|
||||
contents = { 'h1' : '1', 'h2' : '2' }
|
||||
# Verify file doesn't exist, then write private copy of file
|
||||
for host in contents:
|
||||
value = contents[ host ]
|
||||
self.net.sendline( '%s cat %s' % ( host, path ) )
|
||||
self.net.expect( 'No such file' )
|
||||
self.net.expect( self.prompt )
|
||||
self.net.sendline( '%s echo %s > %s' % ( host, value, path ) )
|
||||
self.net.expect( self.prompt )
|
||||
# Verify file contents
|
||||
for host in contents:
|
||||
value = contents[ host ]
|
||||
self.net.sendline( '%s cat %s' % ( host, path ) )
|
||||
self.net.expect( value )
|
||||
self.net.expect( self.prompt )
|
||||
self.net.sendline( '%s rm %s' % ( host, path ) )
|
||||
self.net.expect( self.prompt )
|
||||
|
||||
# TODO: need more tests
|
||||
|
||||
def tearDown( self ):
|
||||
self.net.sendline( 'exit' )
|
||||
self.net.wait()
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,27 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
'''
|
||||
A simple sanity check test for cluster edition
|
||||
'''
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class clusterSanityCheck( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def testClusterPingAll( self ):
|
||||
p = pexpect.spawn( 'python -m mininet.examples.clusterSanity' )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'pingall' )
|
||||
p.expect ( '(\d+)% dropped' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
self.assertEqual( percent, 0 )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,48 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Tests for controllers.py and controllers2.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testControllers( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def connectedTest( self, name, cmap ):
|
||||
"Verify that switches are connected to the controller specified by cmap"
|
||||
p = pexpect.spawn( 'python -m %s' % name )
|
||||
p.expect( self.prompt )
|
||||
# but first a simple ping test
|
||||
p.sendline( 'pingall' )
|
||||
p.expect ( '(\d+)% dropped' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
self.assertEqual( percent, 0 )
|
||||
p.expect( self.prompt )
|
||||
# verify connected controller
|
||||
for switch in cmap:
|
||||
p.sendline( 'sh ovs-vsctl get-controller %s' % switch )
|
||||
p.expect( 'tcp:([\d.:]+)')
|
||||
actual = p.match.group(1)
|
||||
expected = cmap[ switch ]
|
||||
self.assertEqual( actual, expected )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
|
||||
def testControllers( self ):
|
||||
c0 = '127.0.0.1:6633'
|
||||
c1 = '127.0.0.1:6634'
|
||||
cmap = { 's1': c0, 's2': c1, 's3': c0 }
|
||||
self.connectedTest( 'mininet.examples.controllers', cmap )
|
||||
|
||||
def testControllers2( self ):
|
||||
c0 = '127.0.0.1:6633'
|
||||
c1 = '127.0.0.1:6634'
|
||||
cmap = { 's1': c0, 's2': c1 }
|
||||
self.connectedTest( 'mininet.examples.controllers2', cmap )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,47 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for controlnet.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testControlNet( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def testPingall( self ):
|
||||
"Simple pingall test that verifies 0% packet drop in data network"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.controlnet' )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'pingall' )
|
||||
p.expect ( '(\d+)% dropped' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
self.assertEqual( percent, 0 )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
|
||||
def testFailover( self ):
|
||||
"Kill controllers and verify that switch, s1, fails over properly"
|
||||
count = 1
|
||||
p = pexpect.spawn( 'python -m mininet.examples.controlnet' )
|
||||
p.expect( self.prompt )
|
||||
lp = pexpect.spawn( 'tail -f /tmp/s1-ofp.log' )
|
||||
lp.expect( 'tcp:\d+\.\d+\.\d+\.(\d+):\d+: connected' )
|
||||
ip = int( lp.match.group( 1 ) )
|
||||
self.assertEqual( count, ip )
|
||||
count += 1
|
||||
for c in [ 'c0', 'c1' ]:
|
||||
p.sendline( '%s ifconfig %s-eth0 down' % ( c, c) )
|
||||
p.expect( self.prompt )
|
||||
lp.expect( 'tcp:\d+\.\d+\.\d+\.(\d+):\d+: connected' )
|
||||
ip = int( lp.match.group( 1 ) )
|
||||
self.assertEqual( count, ip )
|
||||
count += 1
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,51 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for cpu.py
|
||||
|
||||
results format:
|
||||
|
||||
sched cpu client MB/s
|
||||
|
||||
cfs 45.00% 13254.669841
|
||||
cfs 40.00% 11822.441399
|
||||
cfs 30.00% 5112.963009
|
||||
cfs 20.00% 3449.090009
|
||||
cfs 10.00% 2271.741564
|
||||
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
import sys
|
||||
|
||||
class testCPU( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
@unittest.skipIf( '-quick' in sys.argv, 'long test' )
|
||||
def testCPU( self ):
|
||||
"Verify that CPU utilization is monotonically decreasing for each scheduler"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.cpu' )
|
||||
# matches each line from results( shown above )
|
||||
opts = [ '([a-z]+)\t([\d\.]+)%\t([\d\.]+)',
|
||||
pexpect.EOF ]
|
||||
scheds = []
|
||||
while True:
|
||||
index = p.expect( opts, timeout=600 )
|
||||
if index == 0:
|
||||
sched = p.match.group( 1 )
|
||||
cpu = float( p.match.group( 2 ) )
|
||||
bw = float( p.match.group( 3 ) )
|
||||
if sched not in scheds:
|
||||
scheds.append( sched )
|
||||
else:
|
||||
self.assertTrue( bw < previous_bw )
|
||||
previous_bw = bw
|
||||
else:
|
||||
break
|
||||
|
||||
self.assertTrue( len( scheds ) > 0 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,32 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for emptynet.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testEmptyNet( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def testEmptyNet( self ):
|
||||
"Run simple CLI tests: pingall (verify 0% drop) and iperf (sanity)"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.emptynet' )
|
||||
p.expect( self.prompt )
|
||||
# pingall test
|
||||
p.sendline( 'pingall' )
|
||||
p.expect ( '(\d+)% dropped' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
self.assertEqual( percent, 0 )
|
||||
p.expect( self.prompt )
|
||||
# iperf test
|
||||
p.sendline( 'iperf' )
|
||||
p.expect( "Results: \['[\d.]+ .bits/sec', '[\d.]+ .bits/sec'\]" )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,65 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for hwintf.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import re
|
||||
|
||||
import pexpect
|
||||
|
||||
from mininet.log import setLogLevel
|
||||
from mininet.node import Node
|
||||
from mininet.link import Link
|
||||
|
||||
|
||||
class testHwintf( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def setUp( self ):
|
||||
self.h3 = Node( 't0', ip='10.0.0.3/8' )
|
||||
self.n0 = Node( 't1', inNamespace=False )
|
||||
Link( self.h3, self.n0 )
|
||||
self.h3.configDefault()
|
||||
|
||||
def testLocalPing( self ):
|
||||
"Verify connectivity between virtual hosts using pingall"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.hwintf %s' % self.n0.intf() )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'pingall' )
|
||||
p.expect ( '(\d+)% dropped' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
self.assertEqual( percent, 0 )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
|
||||
def testExternalPing( self ):
|
||||
"Verify connnectivity between virtual host and virtual-physical 'external' host "
|
||||
p = pexpect.spawn( 'python -m mininet.examples.hwintf %s' % self.n0.intf() )
|
||||
p.expect( self.prompt )
|
||||
# test ping external to internal
|
||||
expectStr = '(\d+) packets transmitted, (\d+) received'
|
||||
m = re.search( expectStr, self.h3.cmd( 'ping -v -c 1 10.0.0.1' ) )
|
||||
tx = m.group( 1 )
|
||||
rx = m.group( 2 )
|
||||
self.assertEqual( tx, rx )
|
||||
# test ping internal to external
|
||||
p.sendline( 'h1 ping -c 1 10.0.0.3')
|
||||
p.expect( expectStr )
|
||||
tx = p.match.group( 1 )
|
||||
rx = p.match.group( 2 )
|
||||
self.assertEqual( tx, rx )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
|
||||
def tearDown( self ):
|
||||
self.h3.terminate()
|
||||
self.n0.terminate()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'warning' )
|
||||
unittest.main()
|
||||
@@ -1,42 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for intfOptions.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
import sys
|
||||
|
||||
class testIntfOptions( unittest.TestCase ):
|
||||
|
||||
def testIntfOptions( self ):
|
||||
"verify that intf.config is correctly limiting traffic"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.intfoptions ' )
|
||||
tolerance = .8
|
||||
opts = [ "Results: \['([\d\.]+) .bits/sec",
|
||||
"Results: \['10M', '([\d\.]+) .bits/sec",
|
||||
"h(\d+)->h(\d+): (\d)/(\d), rtt min/avg/max/mdev ([\d\.]+)/([\d\.]+)/([\d\.]+)/([\d\.]+) ms",
|
||||
pexpect.EOF ]
|
||||
while True:
|
||||
index = p.expect( opts, timeout=600 )
|
||||
if index == 0:
|
||||
bw = float( p.match.group( 1 ) )
|
||||
self.assertGreaterEqual( bw, float( 5 * tolerance ) )
|
||||
self.assertLessEqual( bw, float( 5 + 5 * ( 1 - tolerance ) ) )
|
||||
elif index == 1:
|
||||
BW = 10
|
||||
measuredBw = float( p.match.group( 1 ) )
|
||||
loss = ( measuredBw / BW ) * 100
|
||||
self.assertGreaterEqual( loss, 50 * tolerance )
|
||||
self.assertLessEqual( loss, 50 + 50 * ( 1 - tolerance ) )
|
||||
elif index == 2:
|
||||
delay = float( p.match.group( 6 ) )
|
||||
self.assertGreaterEqual( delay, 15 * tolerance )
|
||||
self.assertLessEqual( delay, 15 + 15 * ( 1 - tolerance ) )
|
||||
else:
|
||||
break
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,40 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for limit.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
import sys
|
||||
|
||||
class testLimit( unittest.TestCase ):
|
||||
|
||||
@unittest.skipIf( '-quick' in sys.argv, 'long test' )
|
||||
def testLimit( self ):
|
||||
"Verify that CPU limits are within a 2% tolerance of limit for each scheduler"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.limit' )
|
||||
opts = [ '\*\*\* Testing network ([\d\.]+) Mbps',
|
||||
'\*\*\* Results: \[([\d\., ]+)\]',
|
||||
pexpect.EOF ]
|
||||
count = 0
|
||||
bw = 0
|
||||
tolerance = 2
|
||||
while True:
|
||||
index = p.expect( opts )
|
||||
if index == 0:
|
||||
bw = float( p.match.group( 1 ) )
|
||||
count += 1
|
||||
elif index == 1:
|
||||
results = p.match.group( 1 )
|
||||
for x in results.split( ',' ):
|
||||
result = float( x )
|
||||
self.assertTrue( result < bw + tolerance )
|
||||
self.assertTrue( result > bw - tolerance )
|
||||
else:
|
||||
break
|
||||
|
||||
self.assertTrue( count > 0 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,49 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for linearbandwidth.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
import sys
|
||||
|
||||
class testLinearBandwidth( unittest.TestCase ):
|
||||
|
||||
@unittest.skipIf( '-quick' in sys.argv, 'long test' )
|
||||
def testLinearBandwidth( self ):
|
||||
"Verify that bandwidth is monotonically decreasing as # of hops increases"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.linearbandwidth' )
|
||||
count = 0
|
||||
opts = [ '\*\*\* Linear network results',
|
||||
'(\d+)\s+([\d\.]+) (.bits)',
|
||||
pexpect.EOF ]
|
||||
while True:
|
||||
index = p.expect( opts, timeout=600 )
|
||||
if index == 0:
|
||||
count += 1
|
||||
elif index == 1:
|
||||
n = int( p.match.group( 1 ) )
|
||||
bw = float( p.match.group( 2 ) )
|
||||
unit = p.match.group( 3 )
|
||||
if unit[ 0 ] == 'K':
|
||||
bw *= 10 ** 3
|
||||
elif unit[ 0 ] == 'M':
|
||||
bw *= 10 ** 6
|
||||
elif unit[ 0 ] == 'G':
|
||||
bw *= 10 ** 9
|
||||
# check that we have a previous result to compare to
|
||||
if n != 1:
|
||||
info = ( 'bw: %d bits/s across %d switches, '
|
||||
'previous: %d bits/s across %d switches' %
|
||||
( bw, n, previous_bw, previous_n ) )
|
||||
self.assertTrue( bw < previous_bw, info )
|
||||
previous_bw, previous_n = bw, n
|
||||
else:
|
||||
break
|
||||
|
||||
# verify that we received results from at least one switch
|
||||
self.assertTrue( count > 0 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,52 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for linuxrouter.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
from mininet.util import quietRun
|
||||
|
||||
class testLinuxRouter( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def testPingall( self ):
|
||||
"Test connectivity between hosts"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.linuxrouter' )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'pingall' )
|
||||
p.expect ( '(\d+)% dropped' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
self.assertEqual( percent, 0 )
|
||||
|
||||
def testRouterPing( self ):
|
||||
"Test connectivity from h1 to router"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.linuxrouter' )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'h1 ping -c 1 r0' )
|
||||
p.expect ( '(\d+)% packet loss' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
self.assertEqual( percent, 0 )
|
||||
|
||||
def testTTL( self ):
|
||||
"Verify that the TTL is decremented"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.linuxrouter' )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'h1 ping -c 1 h2' )
|
||||
p.expect ( 'ttl=(\d+)' )
|
||||
ttl = int( p.match.group( 1 ) ) if p.match else -1
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
self.assertEqual( ttl, 63 ) # 64 - 1
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,20 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for mobility.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
from subprocess import check_output
|
||||
|
||||
class testMobility( unittest.TestCase ):
|
||||
|
||||
def testMobility( self ):
|
||||
"Run the example and verify its 4 ping results"
|
||||
cmd = 'python -m mininet.examples.mobility 2>&1'
|
||||
grep = ' | grep -c " 0% dropped" '
|
||||
result = check_output( cmd + grep, shell=True )
|
||||
assert int( result ) == 4
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,55 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
'''
|
||||
Test for multiple links between nodes
|
||||
validates mininet interfaces against systems interfaces
|
||||
'''
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testMultiLink( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def testMultiLink(self):
|
||||
p = pexpect.spawn( 'python -m mininet.examples.multilink' )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'intfs' )
|
||||
p.expect( 's(\d): lo' )
|
||||
intfsOutput = p.before
|
||||
# parse interfaces from mininet intfs, and store them in a list
|
||||
hostToIntfs = intfsOutput.split( '\r\n' )[ 1:3 ]
|
||||
intfList = []
|
||||
for hostToIntf in hostToIntfs:
|
||||
intfList += [ intf for intf in
|
||||
hostToIntf.split()[1].split(',') ]
|
||||
|
||||
# get interfaces from system by running ifconfig on every host
|
||||
sysIntfList = []
|
||||
opts = [ 'h(\d)-eth(\d)', self.prompt ]
|
||||
p.expect( self.prompt )
|
||||
|
||||
p.sendline( 'h1 ifconfig' )
|
||||
while True:
|
||||
p.expect( opts )
|
||||
if p.after == self.prompt:
|
||||
break
|
||||
sysIntfList.append( p.after )
|
||||
|
||||
p.sendline( 'h2 ifconfig' )
|
||||
while True:
|
||||
p.expect( opts )
|
||||
if p.after == self.prompt:
|
||||
break
|
||||
sysIntfList.append( p.after )
|
||||
|
||||
failMsg = ( 'The systems interfaces and mininet interfaces\n'
|
||||
'are not the same' )
|
||||
|
||||
self.assertEqual( sysIntfList, intfList, msg=failMsg )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,48 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for multiping.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
from collections import defaultdict
|
||||
|
||||
class testMultiPing( unittest.TestCase ):
|
||||
|
||||
def testMultiPing( self ):
|
||||
"""Verify that each target is pinged at least once, and
|
||||
that pings to 'real' targets are successful and unknown targets fail"""
|
||||
p = pexpect.spawn( 'python -m mininet.examples.multiping' )
|
||||
opts = [ "Host (h\d+) \(([\d.]+)\) will be pinging ips: ([\d\. ]+)",
|
||||
"(h\d+): ([\d.]+) -> ([\d.]+) \d packets transmitted, (\d) received",
|
||||
pexpect.EOF ]
|
||||
pings = defaultdict( list )
|
||||
while True:
|
||||
index = p.expect( opts )
|
||||
if index == 0:
|
||||
name = p.match.group(1)
|
||||
ip = p.match.group(2)
|
||||
targets = p.match.group(3).split()
|
||||
pings[ name ] += targets
|
||||
elif index == 1:
|
||||
name = p.match.group(1)
|
||||
ip = p.match.group(2)
|
||||
target = p.match.group(3)
|
||||
received = int( p.match.group(4) )
|
||||
if target == '10.0.0.200':
|
||||
self.assertEqual( received, 0 )
|
||||
else:
|
||||
self.assertEqual( received, 1 )
|
||||
try:
|
||||
pings[ name ].remove( target )
|
||||
except:
|
||||
pass
|
||||
else:
|
||||
break
|
||||
self.assertTrue( len( pings ) > 0 )
|
||||
for t in pings.values():
|
||||
self.assertEqual( len( t ), 0 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,38 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for multipoll.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testMultiPoll( unittest.TestCase ):
|
||||
|
||||
def testMultiPoll( self ):
|
||||
"Verify that we receive one ping per second per host"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.multipoll' )
|
||||
opts = [ "\*\*\* (h\d) :" ,
|
||||
"(h\d+): \d+ bytes from",
|
||||
"Monitoring output for (\d+) seconds",
|
||||
pexpect.EOF ]
|
||||
pings = {}
|
||||
while True:
|
||||
index = p.expect( opts )
|
||||
if index == 0:
|
||||
name = p.match.group( 1 )
|
||||
pings[ name ] = 0
|
||||
elif index == 1:
|
||||
name = p.match.group( 1 )
|
||||
pings[ name ] += 1
|
||||
elif index == 2:
|
||||
seconds = int( p.match.group( 1 ) )
|
||||
else:
|
||||
break
|
||||
self.assertTrue( len( pings ) > 0 )
|
||||
# make sure we have received at least one ping per second
|
||||
for count in pings.values():
|
||||
self.assertTrue( count >= seconds )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,32 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for multitest.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testMultiTest( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def testMultiTest( self ):
|
||||
"Verify pingall (0% dropped) and hX-eth0 interface for each host (ifconfig)"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.multitest' )
|
||||
p.expect( '(\d+)% dropped' )
|
||||
dropped = int( p.match.group( 1 ) )
|
||||
self.assertEqual( dropped, 0 )
|
||||
ifCount = 0
|
||||
while True:
|
||||
index = p.expect( [ 'h\d-eth0', self.prompt ] )
|
||||
if index == 0:
|
||||
ifCount += 1
|
||||
elif index == 1:
|
||||
p.sendline( 'exit' )
|
||||
break
|
||||
p.wait()
|
||||
self.assertEqual( ifCount, 4 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,32 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for nat.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
from mininet.util import quietRun
|
||||
|
||||
destIP = '8.8.8.8' # Google DNS
|
||||
|
||||
class testNAT( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
@unittest.skipIf( '0 received' in quietRun( 'ping -c 1 %s' % destIP ),
|
||||
'Destination IP is not reachable' )
|
||||
def testNAT( self ):
|
||||
"Attempt to ping an IP on the Internet and verify 0% packet loss"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.nat' )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'h1 ping -c 1 %s' % destIP )
|
||||
p.expect ( '(\d+)% packet loss' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
self.assertEqual( percent, 0 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,57 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for natnet.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
from mininet.util import quietRun
|
||||
|
||||
class testNATNet( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
def setUp( self ):
|
||||
self.net = pexpect.spawn( 'python -m mininet.examples.natnet' )
|
||||
self.net.expect( self.prompt )
|
||||
|
||||
def testPublicPing( self ):
|
||||
"Attempt to ping the public server (h0) from h1 and h2"
|
||||
self.net.sendline( 'h1 ping -c 1 h0' )
|
||||
self.net.expect ( '(\d+)% packet loss' )
|
||||
percent = int( self.net.match.group( 1 ) ) if self.net.match else -1
|
||||
self.assertEqual( percent, 0 )
|
||||
self.net.expect( self.prompt )
|
||||
|
||||
self.net.sendline( 'h2 ping -c 1 h0' )
|
||||
self.net.expect ( '(\d+)% packet loss' )
|
||||
percent = int( self.net.match.group( 1 ) ) if self.net.match else -1
|
||||
self.assertEqual( percent, 0 )
|
||||
self.net.expect( self.prompt )
|
||||
|
||||
def testPrivatePing( self ):
|
||||
"Attempt to ping h1 and h2 from public server"
|
||||
self.net.sendline( 'h0 ping -c 1 -t 1 h1' )
|
||||
result = self.net.expect ( [ 'unreachable', 'loss' ] )
|
||||
self.assertEqual( result, 0 )
|
||||
self.net.expect( self.prompt )
|
||||
|
||||
self.net.sendline( 'h0 ping -c 1 -t 1 h2' )
|
||||
result = self.net.expect ( [ 'unreachable', 'loss' ] )
|
||||
self.assertEqual( result, 0 )
|
||||
self.net.expect( self.prompt )
|
||||
|
||||
def testPrivateToPrivatePing( self ):
|
||||
"Attempt to ping from NAT'ed host h1 to NAT'ed host h2"
|
||||
self.net.sendline( 'h1 ping -c 1 -t 1 h2' )
|
||||
result = self.net.expect ( [ '[Uu]nreachable', 'loss' ] )
|
||||
self.assertEqual( result, 0 )
|
||||
self.net.expect( self.prompt )
|
||||
|
||||
def tearDown( self ):
|
||||
self.net.sendline( 'exit' )
|
||||
self.net.wait()
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,52 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for numberedports.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
from collections import defaultdict
|
||||
from mininet.node import OVSSwitch
|
||||
|
||||
class testNumberedports( unittest.TestCase ):
|
||||
|
||||
@unittest.skipIf( OVSSwitch.setup() or OVSSwitch.isOldOVS(), "old version of OVS" )
|
||||
def testConsistency( self ):
|
||||
"""verify consistency between mininet and ovs ports"""
|
||||
p = pexpect.spawn( 'python -m mininet.examples.numberedports' )
|
||||
opts = [ 'Validating that s1-eth\d is actually on port \d ... Validated.',
|
||||
'Validating that s1-eth\d is actually on port \d ... WARNING',
|
||||
pexpect.EOF ]
|
||||
correct_ports = True
|
||||
count = 0
|
||||
while True:
|
||||
index = p.expect( opts )
|
||||
if index == 0:
|
||||
count += 1
|
||||
elif index == 1:
|
||||
correct_ports = False
|
||||
elif index == 2:
|
||||
self.assertNotEqual( 0, count )
|
||||
break
|
||||
self.assertTrue( correct_ports )
|
||||
|
||||
def testNumbering( self ):
|
||||
"""verify that all of the port numbers are printed correctly and consistent with their interface"""
|
||||
p = pexpect.spawn( 'python -m mininet.examples.numberedports' )
|
||||
opts = [ 's1-eth(\d+) : (\d+)',
|
||||
pexpect.EOF ]
|
||||
count_intfs = 0
|
||||
while True:
|
||||
index = p.expect( opts )
|
||||
if index == 0:
|
||||
count_intfs += 1
|
||||
intfport = p.match.group( 1 )
|
||||
ofport = p.match.group( 2 )
|
||||
self.assertEqual( intfport, ofport )
|
||||
elif index == 1:
|
||||
break
|
||||
self.assertNotEqual( 0, count_intfs )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,45 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for popen.py and popenpoll.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testPopen( unittest.TestCase ):
|
||||
|
||||
def pingTest( self, name ):
|
||||
"Verify that there are no dropped packets for each host"
|
||||
p = pexpect.spawn( 'python -m %s' % name )
|
||||
opts = [ "<(h\d+)>: PING ",
|
||||
"<(h\d+)>: (\d+) packets transmitted, (\d+) received",
|
||||
pexpect.EOF ]
|
||||
pings = {}
|
||||
while True:
|
||||
index = p.expect( opts )
|
||||
if index == 0:
|
||||
name = p.match.group(1)
|
||||
pings[ name ] = 0
|
||||
elif index == 1:
|
||||
name = p.match.group(1)
|
||||
transmitted = p.match.group(2)
|
||||
received = p.match.group(3)
|
||||
# verify no dropped packets
|
||||
self.assertEqual( received, transmitted )
|
||||
pings[ name ] += 1
|
||||
else:
|
||||
break
|
||||
self.assertTrue( len(pings) > 0 )
|
||||
# verify that each host has gotten results
|
||||
for count in pings.values():
|
||||
self.assertEqual( count, 1 )
|
||||
|
||||
def testPopen( self ):
|
||||
self.pingTest( 'mininet.examples.popen' )
|
||||
|
||||
def testPopenPoll( self ):
|
||||
self.pingTest( 'mininet.examples.popenpoll' )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,27 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for scratchnet.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
|
||||
class testScratchNet( unittest.TestCase ):
|
||||
|
||||
opts = [ "1 packets transmitted, 1 received, 0% packet loss", pexpect.EOF ]
|
||||
|
||||
def pingTest( self, name ):
|
||||
"Verify that no ping packets were dropped"
|
||||
p = pexpect.spawn( 'python -m %s' % name )
|
||||
index = p.expect( self.opts )
|
||||
self.assertEqual( index, 0 )
|
||||
|
||||
def testPingKernel( self ):
|
||||
self.pingTest( 'mininet.examples.scratchnet' )
|
||||
|
||||
def testPingUser( self ):
|
||||
self.pingTest( 'mininet.examples.scratchnetuser' )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,34 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for simpleperf.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
import sys
|
||||
from mininet.log import setLogLevel
|
||||
|
||||
from mininet.examples.simpleperf import SingleSwitchTopo
|
||||
|
||||
class testSimplePerf( unittest.TestCase ):
|
||||
|
||||
@unittest.skipIf( '-quick' in sys.argv, 'long test' )
|
||||
def testE2E( self ):
|
||||
"Run the example and verify iperf results"
|
||||
BW = 10
|
||||
TOLERANCE = .8
|
||||
expectedBw = BW * TOLERANCE
|
||||
p = pexpect.spawn( 'python -m mininet.examples.simpleperf' )
|
||||
# check iperf results
|
||||
p.expect( "Results: \['10M', '([\d\.]+) .bits/sec", timeout=480 )
|
||||
measuredBw = float( p.match.group( 1 ) )
|
||||
lowerBound = expectedBw * TOLERANCE
|
||||
upperBound = expectedBw + expectedBw * ( 1 - TOLERANCE )
|
||||
self.assertGreaterEqual( measuredBw, lowerBound )
|
||||
self.assertLessEqual( measuredBw, upperBound )
|
||||
p.wait()
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'warning' )
|
||||
unittest.main()
|
||||
@@ -1,60 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for sshd.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
from mininet.clean import sh
|
||||
|
||||
class testSSHD( unittest.TestCase ):
|
||||
|
||||
opts = [ '\(yes/no\)\?', 'refused', 'Welcome|\$|#', pexpect.EOF, pexpect.TIMEOUT ]
|
||||
|
||||
def connected( self, ip ):
|
||||
"Log into ssh server, check banner, then exit"
|
||||
# Note: this test will fail if "Welcome" is not in the sshd banner
|
||||
# and '#'' or '$'' are not in the prompt
|
||||
p = pexpect.spawn( 'ssh -i /tmp/ssh/test_rsa %s' % ip, timeout=10 )
|
||||
while True:
|
||||
index = p.expect( self.opts )
|
||||
if index == 0:
|
||||
print p.match.group(0)
|
||||
p.sendline( 'yes' )
|
||||
elif index == 1:
|
||||
return False
|
||||
elif index == 2:
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def setUp( self ):
|
||||
# create public key pair for testing
|
||||
sh( 'rm -rf /tmp/ssh' )
|
||||
sh( 'mkdir /tmp/ssh' )
|
||||
sh( "ssh-keygen -t rsa -P '' -f /tmp/ssh/test_rsa" )
|
||||
sh( 'cat /tmp/ssh/test_rsa.pub >> /tmp/ssh/authorized_keys' )
|
||||
cmd = ( 'python -m mininet.examples.sshd -D '
|
||||
'-o AuthorizedKeysFile=/tmp/ssh/authorized_keys '
|
||||
'-o StrictModes=no -o UseDNS=no -u0' )
|
||||
# run example with custom sshd args
|
||||
self.net = pexpect.spawn( cmd )
|
||||
self.net.expect( 'mininet>' )
|
||||
|
||||
def testSSH( self ):
|
||||
"Verify that we can ssh into all hosts (h1 to h4)"
|
||||
for h in range( 1, 5 ):
|
||||
self.assertTrue( self.connected( '10.0.0.%d' % h ) )
|
||||
|
||||
def tearDown( self ):
|
||||
self.net.sendline( 'exit' )
|
||||
self.net.wait()
|
||||
# remove public key pair
|
||||
sh( 'rm -rf /tmp/ssh' )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
|
||||
@@ -1,29 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for tree1024.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
import sys
|
||||
|
||||
class testTree1024( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
@unittest.skipIf( '-quick' in sys.argv, 'long test' )
|
||||
def testTree1024( self ):
|
||||
"Run the example and do a simple ping test from h1 to h1024"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.tree1024' )
|
||||
p.expect( self.prompt, timeout=6000 ) # it takes awhile to set up
|
||||
p.sendline( 'h1 ping -c 1 h1024' )
|
||||
p.expect ( '(\d+)% packet loss' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
self.assertEqual( percent, 0 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,32 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for treeping64.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
import sys
|
||||
|
||||
class testTreePing64( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
@unittest.skipIf( '-quick' in sys.argv, 'long test' )
|
||||
def testTreePing64( self ):
|
||||
"Run the example and verify ping results"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.treeping64' )
|
||||
p.expect( 'Tree network ping results:', timeout=6000 )
|
||||
count = 0
|
||||
while True:
|
||||
index = p.expect( [ '(\d+)% packet loss', pexpect.EOF ] )
|
||||
if index == 0:
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
self.assertEqual( percent, 0 )
|
||||
count += 1
|
||||
else:
|
||||
break
|
||||
self.assertTrue( count > 0 )
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -1,50 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
"""
|
||||
Test for vlanhost.py
|
||||
"""
|
||||
|
||||
import unittest
|
||||
import pexpect
|
||||
import sys
|
||||
from mininet.util import quietRun
|
||||
|
||||
class testVLANHost( unittest.TestCase ):
|
||||
|
||||
prompt = 'mininet>'
|
||||
|
||||
@unittest.skipIf( '-quick' in sys.argv, 'long test' )
|
||||
def testVLANTopo( self ):
|
||||
"Test connectivity (or lack thereof) between hosts in VLANTopo"
|
||||
p = pexpect.spawn( 'python -m mininet.examples.vlanhost' )
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'pingall 1' ) #ping timeout=1
|
||||
p.expect( '(\d+)% dropped', timeout=30 ) # there should be 24 failed pings
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
p.expect( self.prompt )
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
self.assertEqual( percent, 80 )
|
||||
|
||||
def testSpecificVLAN( self ):
|
||||
"Test connectivity between hosts on a specific VLAN"
|
||||
vlan = 1001
|
||||
p = pexpect.spawn( 'python -m mininet.examples.vlanhost %d' % vlan )
|
||||
p.expect( self.prompt )
|
||||
|
||||
p.sendline( 'h1 ping -c 1 h2' )
|
||||
p.expect ( '(\d+)% packet loss' )
|
||||
percent = int( p.match.group( 1 ) ) if p.match else -1
|
||||
p.expect( self.prompt )
|
||||
|
||||
p.sendline( 'h1 ifconfig' )
|
||||
i = p.expect( ['h1-eth0.%d' % vlan, pexpect.TIMEOUT ], timeout=2 )
|
||||
p.expect( self.prompt )
|
||||
|
||||
p.sendline( 'exit' )
|
||||
p.wait()
|
||||
self.assertEqual( percent, 0 ) # no packet loss on ping
|
||||
self.assertEqual( i, 0 ) # check vlan intf is present
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
@@ -9,10 +9,10 @@ and running sysctl -p. Check util/sysctl_addon.
|
||||
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import setLogLevel
|
||||
from mininet.node import OVSSwitch
|
||||
from mininet.node import OVSKernelSwitch
|
||||
from mininet.topolib import TreeNet
|
||||
|
||||
if __name__ == '__main__':
|
||||
setLogLevel( 'info' )
|
||||
network = TreeNet( depth=2, fanout=32, switch=OVSSwitch )
|
||||
network = TreeNet( depth=2, fanout=32, switch=OVSKernelSwitch )
|
||||
network.run( CLI, network )
|
||||
|
||||
@@ -11,8 +11,8 @@ def treePing64():
|
||||
|
||||
results = {}
|
||||
switches = { # 'reference kernel': KernelSwitch,
|
||||
'reference user': UserSwitch,
|
||||
'Open vSwitch kernel': OVSKernelSwitch }
|
||||
'reference user': UserSwitch,
|
||||
'Open vSwitch kernel': OVSKernelSwitch }
|
||||
|
||||
for name in switches:
|
||||
print "*** Testing", name, "datapath"
|
||||
|
||||
@@ -1,124 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
"""
|
||||
vlanhost.py: Host subclass that uses a VLAN tag for the default interface.
|
||||
|
||||
Dependencies:
|
||||
This class depends on the "vlan" package
|
||||
$ sudo apt-get install vlan
|
||||
|
||||
Usage (example uses VLAN ID=1000):
|
||||
From the command line:
|
||||
sudo mn --custom vlanhost.py --host vlan,vlan=1000
|
||||
|
||||
From a script (see exampleUsage function below):
|
||||
from functools import partial
|
||||
from vlanhost import VLANHost
|
||||
|
||||
....
|
||||
|
||||
host = partial( VLANHost, vlan=1000 )
|
||||
net = Mininet( host=host, ... )
|
||||
|
||||
Directly running this script:
|
||||
sudo python vlanhost.py 1000
|
||||
|
||||
"""
|
||||
|
||||
from mininet.node import Host
|
||||
from mininet.topo import Topo
|
||||
from mininet.util import quietRun
|
||||
from mininet.log import error
|
||||
|
||||
class VLANHost( Host ):
|
||||
"Host connected to VLAN interface"
|
||||
|
||||
def config( self, vlan=100, **params ):
|
||||
"""Configure VLANHost according to (optional) parameters:
|
||||
vlan: VLAN ID for default interface"""
|
||||
|
||||
r = super( VLANHost, self ).config( **params )
|
||||
|
||||
intf = self.defaultIntf()
|
||||
# remove IP from default, "physical" interface
|
||||
self.cmd( 'ifconfig %s inet 0' % intf )
|
||||
# create VLAN interface
|
||||
self.cmd( 'vconfig add %s %d' % ( intf, vlan ) )
|
||||
# assign the host's IP to the VLAN interface
|
||||
self.cmd( 'ifconfig %s.%d inet %s' % ( intf, vlan, params['ip'] ) )
|
||||
# update the intf name and host's intf map
|
||||
newName = '%s.%d' % ( intf, vlan )
|
||||
# update the (Mininet) interface to refer to VLAN interface name
|
||||
intf.name = newName
|
||||
# add VLAN interface to host's name to intf map
|
||||
self.nameToIntf[ newName ] = intf
|
||||
|
||||
return r
|
||||
|
||||
hosts = { 'vlan': VLANHost }
|
||||
|
||||
|
||||
def exampleAllHosts( vlan ):
|
||||
"""Simple example of how VLANHost can be used in a script"""
|
||||
# This is where the magic happens...
|
||||
host = partial( VLANHost, vlan=vlan )
|
||||
# vlan (type: int): VLAN ID to be used by all hosts
|
||||
|
||||
# Start a basic network using our VLANHost
|
||||
topo = SingleSwitchTopo( k=2 )
|
||||
net = Mininet( host=host, topo=topo )
|
||||
net.start()
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
# pylint: disable=arguments-differ
|
||||
|
||||
class VLANStarTopo( Topo ):
|
||||
"""Example topology that uses host in multiple VLANs
|
||||
|
||||
The topology has a single switch. There are k VLANs with
|
||||
n hosts in each, all connected to the single switch. There
|
||||
are also n hosts that are not in any VLAN, also connected to
|
||||
the switch."""
|
||||
|
||||
def build( self, k=2, n=2, vlanBase=100 ):
|
||||
s1 = self.addSwitch( 's1' )
|
||||
for i in range( k ):
|
||||
vlan = vlanBase + i
|
||||
for j in range(n):
|
||||
name = 'h%d-%d' % ( j+1, vlan )
|
||||
h = self.addHost( name, cls=VLANHost, vlan=vlan )
|
||||
self.addLink( h, s1 )
|
||||
for j in range( n ):
|
||||
h = self.addHost( 'h%d' % (j+1) )
|
||||
self.addLink( h, s1 )
|
||||
|
||||
|
||||
def exampleCustomTags():
|
||||
"""Simple example that exercises VLANStarTopo"""
|
||||
|
||||
net = Mininet( topo=VLANStarTopo() )
|
||||
net.start()
|
||||
CLI( net )
|
||||
net.stop()
|
||||
|
||||
if __name__ == '__main__':
|
||||
import sys
|
||||
from functools import partial
|
||||
|
||||
from mininet.net import Mininet
|
||||
from mininet.cli import CLI
|
||||
from mininet.topo import SingleSwitchTopo
|
||||
from mininet.log import setLogLevel
|
||||
|
||||
setLogLevel( 'info' )
|
||||
|
||||
if not quietRun( 'which vconfig' ):
|
||||
error( "Cannot find command 'vconfig'\nThe package",
|
||||
"'vlan' is required in Ubuntu or Debian,",
|
||||
"or 'vconfig' in Fedora\n" )
|
||||
exit()
|
||||
|
||||
if len( sys.argv ) >= 2:
|
||||
exampleAllHosts( vlan=int( sys.argv[ 1 ] ) )
|
||||
else:
|
||||
exampleCustomTags()
|
||||
+31
-97
@@ -10,117 +10,51 @@ It may also get rid of 'false positives', but hopefully
|
||||
nothing irreplaceable!
|
||||
"""
|
||||
|
||||
from subprocess import ( Popen, PIPE, check_output as co,
|
||||
CalledProcessError )
|
||||
import time
|
||||
from subprocess import Popen, PIPE
|
||||
|
||||
from mininet.log import info
|
||||
from mininet.term import cleanUpScreens
|
||||
|
||||
|
||||
def sh( cmd ):
|
||||
"Print a command and send it to the shell"
|
||||
info( cmd + '\n' )
|
||||
return Popen( [ '/bin/sh', '-c', cmd ], stdout=PIPE ).communicate()[ 0 ]
|
||||
|
||||
def killprocs( pattern ):
|
||||
"Reliably terminate processes matching a pattern (including args)"
|
||||
sh( 'pkill -9 -f %s' % pattern )
|
||||
# Make sure they are gone
|
||||
while True:
|
||||
try:
|
||||
pids = co( [ 'pgrep', '-f', pattern ] )
|
||||
except CalledProcessError:
|
||||
pids = ''
|
||||
if pids:
|
||||
sh( 'pkill -9 -f %s' % pattern )
|
||||
time.sleep( .5 )
|
||||
else:
|
||||
break
|
||||
def cleanup():
|
||||
"""Clean up junk which might be left over from old runs;
|
||||
do fast stuff before slow dp and link removal!"""
|
||||
|
||||
class Cleanup( object ):
|
||||
"Wrapper for cleanup()"
|
||||
info("*** Removing excess controllers/ofprotocols/ofdatapaths/pings/noxes"
|
||||
"\n")
|
||||
zombies = 'controller ofprotocol ofdatapath ping nox_core lt-nox_core '
|
||||
zombies += 'ovs-openflowd udpbwtest'
|
||||
# Note: real zombie processes can't actually be killed, since they
|
||||
# are already (un)dead. Then again,
|
||||
# you can't connect to them either, so they're mostly harmless.
|
||||
sh( 'killall -9 ' + zombies + ' 2> /dev/null' )
|
||||
|
||||
callbacks = []
|
||||
info( "*** Removing junk from /tmp\n" )
|
||||
sh( 'rm -f /tmp/vconn* /tmp/vlogs* /tmp/*.out /tmp/*.log' )
|
||||
|
||||
@classmethod
|
||||
def cleanup( cls):
|
||||
"""Clean up junk which might be left over from old runs;
|
||||
do fast stuff before slow dp and link removal!"""
|
||||
info( "*** Removing old screen sessions\n" )
|
||||
cleanUpScreens()
|
||||
|
||||
info( "*** Removing excess controllers/ofprotocols/ofdatapaths/"
|
||||
"pings/noxes\n" )
|
||||
zombies = 'controller ofprotocol ofdatapath ping nox_core lt-nox_core '
|
||||
zombies += 'ovs-openflowd ovs-controller udpbwtest mnexec ivs'
|
||||
# Note: real zombie processes can't actually be killed, since they
|
||||
# are already (un)dead. Then again,
|
||||
# you can't connect to them either, so they're mostly harmless.
|
||||
# Send SIGTERM first to give processes a chance to shutdown cleanly.
|
||||
sh( 'killall ' + zombies + ' 2> /dev/null' )
|
||||
time.sleep( 1 )
|
||||
sh( 'killall -9 ' + zombies + ' 2> /dev/null' )
|
||||
info( "*** Removing excess kernel datapaths\n" )
|
||||
dps = sh( "ps ax | egrep -o 'dp[0-9]+' | sed 's/dp/nl:/'" ).split( '\n' )
|
||||
for dp in dps:
|
||||
if dp != '':
|
||||
sh( 'dpctl deldp ' + dp )
|
||||
|
||||
# And kill off sudo mnexec
|
||||
sh( 'pkill -9 -f "sudo mnexec"')
|
||||
|
||||
info( "*** Removing junk from /tmp\n" )
|
||||
sh( 'rm -f /tmp/vconn* /tmp/vlogs* /tmp/*.out /tmp/*.log' )
|
||||
|
||||
info( "*** Removing old X11 tunnels\n" )
|
||||
cleanUpScreens()
|
||||
|
||||
info( "*** Removing excess kernel datapaths\n" )
|
||||
dps = sh( "ps ax | egrep -o 'dp[0-9]+' | sed 's/dp/nl:/'"
|
||||
).splitlines()
|
||||
for dp in dps:
|
||||
if dp:
|
||||
sh( 'dpctl deldp ' + dp )
|
||||
|
||||
info( "*** Removing OVS datapaths\n" )
|
||||
dps = sh("ovs-vsctl --timeout=1 list-br").strip().splitlines()
|
||||
if dps:
|
||||
sh( "ovs-vsctl " + " -- ".join( "--if-exists del-br " + dp
|
||||
for dp in dps if dp ) )
|
||||
# And in case the above didn't work...
|
||||
dps = sh( "ovs-vsctl --timeout=1 list-br" ).strip().splitlines()
|
||||
for dp in dps:
|
||||
info( "*** Removing OVS datapaths" )
|
||||
dps = sh("ovs-vsctl list-br").split( '\n' )
|
||||
for dp in dps:
|
||||
if dp:
|
||||
sh( 'ovs-vsctl del-br ' + dp )
|
||||
|
||||
info( "*** Removing all links of the pattern foo-ethX\n" )
|
||||
links = sh( "ip link show | "
|
||||
"egrep -o '([-_.[:alnum:]]+-eth[[:digit:]]+)'"
|
||||
).splitlines()
|
||||
# Delete blocks of links
|
||||
n = 1000 # chunk size
|
||||
for i in xrange( 0, len( links ), n ):
|
||||
cmd = ';'.join( 'ip link del %s' % link
|
||||
for link in links[ i : i + n ] )
|
||||
sh( '( %s ) 2> /dev/null' % cmd )
|
||||
info( "*** Removing all links of the pattern foo-ethX\n" )
|
||||
links = sh( "ip link show | egrep -o '(\w+-eth\w+)'" ).split( '\n' )
|
||||
for link in links:
|
||||
if link != '':
|
||||
sh( "ip link del " + link )
|
||||
|
||||
if 'tap9' in sh( 'ip link show' ):
|
||||
info( "*** Removing tap9 - assuming it's from cluster edition\n" )
|
||||
sh( 'ip link del tap9' )
|
||||
|
||||
info( "*** Killing stale mininet node processes\n" )
|
||||
killprocs( 'mininet:' )
|
||||
|
||||
info( "*** Shutting down stale tunnels\n" )
|
||||
killprocs( 'Tunnel=Ethernet' )
|
||||
killprocs( '.ssh/mn')
|
||||
sh( 'rm -f ~/.ssh/mn/*' )
|
||||
|
||||
# Call any additional cleanup code if necessary
|
||||
for callback in cls.callbacks:
|
||||
callback()
|
||||
|
||||
info( "*** Cleanup complete.\n" )
|
||||
|
||||
@classmethod
|
||||
def addCleanupCallback( cls, callback ):
|
||||
"Add cleanup callback"
|
||||
if callback not in cls.callbacks:
|
||||
cls.callbacks.append( callback )
|
||||
|
||||
|
||||
cleanup = Cleanup.cleanup
|
||||
addCleanupCallback = Cleanup.addCleanupCallback
|
||||
info( "*** Cleanup complete.\n" )
|
||||
|
||||
+61
-185
@@ -30,14 +30,10 @@ from cmd import Cmd
|
||||
from os import isatty
|
||||
from select import poll, POLLIN
|
||||
import sys
|
||||
import time
|
||||
import os
|
||||
import atexit
|
||||
|
||||
from mininet.log import info, output, error
|
||||
from mininet.term import makeTerms, runX11
|
||||
from mininet.util import ( quietRun, dumpNodeConnections,
|
||||
dumpPorts )
|
||||
from mininet.term import makeTerms
|
||||
from mininet.util import quietRun, isShellBuiltin, dumpNodeConnections
|
||||
|
||||
class CLI( Cmd ):
|
||||
"Simple command-line interface to talk to nodes."
|
||||
@@ -45,13 +41,14 @@ class CLI( Cmd ):
|
||||
prompt = 'mininet> '
|
||||
|
||||
def __init__( self, mininet, stdin=sys.stdin, script=None ):
|
||||
"""Start and run interactive or batch mode CLI
|
||||
mininet: Mininet network object
|
||||
stdin: standard input for CLI
|
||||
script: script to run in batch mode"""
|
||||
self.mn = mininet
|
||||
self.nodelist = self.mn.controllers + self.mn.switches + self.mn.hosts
|
||||
self.nodemap = {} # map names to Node objects
|
||||
for node in self.nodelist:
|
||||
self.nodemap[ node.name ] = node
|
||||
# Local variable bindings for py command
|
||||
self.locals = { 'net': mininet }
|
||||
self.locals.update( self.nodemap )
|
||||
# Attempt to handle input
|
||||
self.stdin = stdin
|
||||
self.inPoller = poll()
|
||||
@@ -59,64 +56,31 @@ class CLI( Cmd ):
|
||||
self.inputFile = script
|
||||
Cmd.__init__( self )
|
||||
info( '*** Starting CLI:\n' )
|
||||
|
||||
if self.inputFile:
|
||||
self.do_source( self.inputFile )
|
||||
return
|
||||
|
||||
self.initReadline()
|
||||
self.run()
|
||||
|
||||
readlineInited = False
|
||||
|
||||
@classmethod
|
||||
def initReadline( cls ):
|
||||
"Set up history if readline is available"
|
||||
# Only set up readline once to prevent multiplying the history file
|
||||
if cls.readlineInited:
|
||||
return
|
||||
cls.readlineInited = True
|
||||
try:
|
||||
from readline import read_history_file, write_history_file
|
||||
except ImportError:
|
||||
pass
|
||||
else:
|
||||
history_path = os.path.expanduser( '~/.mininet_history' )
|
||||
if os.path.isfile( history_path ):
|
||||
read_history_file( history_path )
|
||||
atexit.register( lambda: write_history_file( history_path ) )
|
||||
|
||||
def run( self ):
|
||||
"Run our cmdloop(), catching KeyboardInterrupt"
|
||||
while True:
|
||||
try:
|
||||
# Make sure no nodes are still waiting
|
||||
for node in self.mn.values():
|
||||
for node in self.nodelist:
|
||||
while node.waiting:
|
||||
info( 'stopping', node, '\n' )
|
||||
node.sendInt()
|
||||
node.waitOutput()
|
||||
node.monitor()
|
||||
if self.isatty():
|
||||
quietRun( 'stty echo sane intr ^C' )
|
||||
quietRun( 'stty sane' )
|
||||
self.cmdloop()
|
||||
break
|
||||
except KeyboardInterrupt:
|
||||
# Output a message - unless it's also interrupted
|
||||
# pylint: disable=broad-except
|
||||
try:
|
||||
output( '\nInterrupt\n' )
|
||||
except Exception:
|
||||
pass
|
||||
# pylint: enable=broad-except
|
||||
output( '\nInterrupt\n' )
|
||||
|
||||
def emptyline( self ):
|
||||
"Don't repeat last command when you hit return."
|
||||
pass
|
||||
|
||||
def getLocals( self ):
|
||||
"Local variable bindings for py command"
|
||||
self.locals.update( self.mn )
|
||||
return self.locals
|
||||
# Disable pylint "Unused argument: 'arg's'" messages, as well as
|
||||
# "method could be a function" warning, since each CLI function
|
||||
# must have the same interface
|
||||
# pylint: disable-msg=R0201
|
||||
|
||||
helpStr = (
|
||||
'You may also send a command to a node using:\n'
|
||||
@@ -145,31 +109,25 @@ class CLI( Cmd ):
|
||||
|
||||
def do_nodes( self, _line ):
|
||||
"List all nodes."
|
||||
nodes = ' '.join( sorted( self.mn ) )
|
||||
nodes = ' '.join( [ node.name for node in sorted( self.nodelist ) ] )
|
||||
output( 'available nodes are: \n%s\n' % nodes )
|
||||
|
||||
def do_ports( self, _line ):
|
||||
"display ports and interfaces for each switch"
|
||||
dumpPorts( self.mn.switches )
|
||||
|
||||
def do_net( self, _line ):
|
||||
"List network connections."
|
||||
dumpNodeConnections( self.mn.values() )
|
||||
dumpNodeConnections( self.nodelist )
|
||||
|
||||
def do_sh( self, line ):
|
||||
"""Run an external shell command
|
||||
Usage: sh [cmd args]"""
|
||||
assert self # satisfy pylint and allow override
|
||||
"Run an external shell command"
|
||||
call( line, shell=True )
|
||||
|
||||
# do_py() and do_px() need to catch any exception during eval()/exec()
|
||||
# pylint: disable=broad-except
|
||||
# do_py() needs to catch any exception during eval()
|
||||
# pylint: disable-msg=W0703
|
||||
|
||||
def do_py( self, line ):
|
||||
"""Evaluate a Python expression.
|
||||
Node names may be used, e.g.: py h1.cmd('ls')"""
|
||||
Node names may be used, e.g.: h1.cmd('ls')"""
|
||||
try:
|
||||
result = eval( line, globals(), self.getLocals() )
|
||||
result = eval( line, globals(), self.locals )
|
||||
if not result:
|
||||
return
|
||||
elif isinstance( result, str ):
|
||||
@@ -179,38 +137,18 @@ class CLI( Cmd ):
|
||||
except Exception, e:
|
||||
output( str( e ) + '\n' )
|
||||
|
||||
# We are in fact using the exec() pseudo-function
|
||||
# pylint: disable=exec-used
|
||||
# pylint: enable-msg=W0703
|
||||
|
||||
def do_px( self, line ):
|
||||
"""Execute a Python statement.
|
||||
Node names may be used, e.g.: px print h1.cmd('ls')"""
|
||||
try:
|
||||
exec( line, globals(), self.getLocals() )
|
||||
except Exception, e:
|
||||
output( str( e ) + '\n' )
|
||||
|
||||
# pylint: enable=broad-except,exec-used
|
||||
|
||||
def do_pingall( self, line ):
|
||||
def do_pingall( self, _line ):
|
||||
"Ping between all hosts."
|
||||
self.mn.pingAll( line )
|
||||
self.mn.pingAll()
|
||||
|
||||
def do_pingpair( self, _line ):
|
||||
"Ping between first two hosts, useful for testing."
|
||||
self.mn.pingPair()
|
||||
|
||||
def do_pingallfull( self, _line ):
|
||||
"Ping between all hosts, returns all ping results."
|
||||
self.mn.pingAllFull()
|
||||
|
||||
def do_pingpairfull( self, _line ):
|
||||
"Ping between first two hosts, returns all ping results."
|
||||
self.mn.pingPairFull()
|
||||
|
||||
def do_iperf( self, line ):
|
||||
"""Simple iperf TCP test between two (optionally specified) hosts.
|
||||
Usage: iperf node1 node2"""
|
||||
"Simple iperf TCP test between two (optionally specified) hosts."
|
||||
args = line.split()
|
||||
if not args:
|
||||
self.mn.iperf()
|
||||
@@ -218,19 +156,18 @@ class CLI( Cmd ):
|
||||
hosts = []
|
||||
err = False
|
||||
for arg in args:
|
||||
if arg not in self.mn:
|
||||
if arg not in self.nodemap:
|
||||
err = True
|
||||
error( "node '%s' not in network\n" % arg )
|
||||
else:
|
||||
hosts.append( self.mn[ arg ] )
|
||||
hosts.append( self.nodemap[ arg ] )
|
||||
if not err:
|
||||
self.mn.iperf( hosts )
|
||||
else:
|
||||
error( 'invalid number of args: iperf src dst\n' )
|
||||
|
||||
def do_iperfudp( self, line ):
|
||||
"""Simple iperf UDP test between two (optionally specified) hosts.
|
||||
Usage: iperfudp bw node1 node2"""
|
||||
"Simple iperf TCP test between two (optionally specified) hosts."
|
||||
args = line.split()
|
||||
if not args:
|
||||
self.mn.iperf( l4Type='UDP' )
|
||||
@@ -239,11 +176,11 @@ class CLI( Cmd ):
|
||||
hosts = []
|
||||
err = False
|
||||
for arg in args[ 1:3 ]:
|
||||
if arg not in self.mn:
|
||||
if arg not in self.nodemap:
|
||||
err = True
|
||||
error( "node '%s' not in network\n" % arg )
|
||||
else:
|
||||
hosts.append( self.mn[ arg ] )
|
||||
hosts.append( self.nodemap[ arg ] )
|
||||
if not err:
|
||||
self.mn.iperf( hosts, l4Type='UDP', udpBw=udpBw )
|
||||
else:
|
||||
@@ -252,18 +189,17 @@ class CLI( Cmd ):
|
||||
|
||||
def do_intfs( self, _line ):
|
||||
"List interfaces."
|
||||
for node in self.mn.values():
|
||||
for node in self.nodelist:
|
||||
output( '%s: %s\n' %
|
||||
( node.name, ','.join( node.intfNames() ) ) )
|
||||
( node.name, ','.join( node.intfNames() ) ) )
|
||||
|
||||
def do_dump( self, _line ):
|
||||
"Dump node info."
|
||||
for node in self.mn.values():
|
||||
for node in self.nodelist:
|
||||
output( '%s\n' % repr( node ) )
|
||||
|
||||
def do_link( self, line ):
|
||||
"""Bring link(s) between two nodes up or down.
|
||||
Usage: link node1 node2 [up/down]"""
|
||||
"Bring link(s) between two nodes up or down."
|
||||
args = line.split()
|
||||
if len(args) != 3:
|
||||
error( 'invalid number of args: link end1 end2 [up down]\n' )
|
||||
@@ -273,39 +209,24 @@ class CLI( Cmd ):
|
||||
self.mn.configLinkStatus( *args )
|
||||
|
||||
def do_xterm( self, line, term='xterm' ):
|
||||
"""Spawn xterm(s) for the given node(s).
|
||||
Usage: xterm node1 node2 ..."""
|
||||
"Spawn xterm(s) for the given node(s)."
|
||||
args = line.split()
|
||||
if not args:
|
||||
error( 'usage: %s node1 node2 ...\n' % term )
|
||||
else:
|
||||
for arg in args:
|
||||
if arg not in self.mn:
|
||||
if arg not in self.nodemap:
|
||||
error( "node '%s' not in network\n" % arg )
|
||||
else:
|
||||
node = self.mn[ arg ]
|
||||
node = self.nodemap[ arg ]
|
||||
self.mn.terms += makeTerms( [ node ], term = term )
|
||||
|
||||
def do_x( self, line ):
|
||||
"""Create an X11 tunnel to the given node,
|
||||
optionally starting a client.
|
||||
Usage: x node [cmd args]"""
|
||||
args = line.split()
|
||||
if not args:
|
||||
error( 'usage: x node [cmd args]...\n' )
|
||||
else:
|
||||
node = self.mn[ args[ 0 ] ]
|
||||
cmd = args[ 1: ]
|
||||
self.mn.terms += runX11( node, cmd )
|
||||
|
||||
def do_gterm( self, line ):
|
||||
"""Spawn gnome-terminal(s) for the given node(s).
|
||||
Usage: gterm node1 node2 ..."""
|
||||
"Spawn gnome-terminal(s) for the given node(s)."
|
||||
self.do_xterm( line, term='gterm' )
|
||||
|
||||
def do_exit( self, _line ):
|
||||
"Exit"
|
||||
assert self # satisfy pylint and allow override
|
||||
return 'exited by user command'
|
||||
|
||||
def do_quit( self, line ):
|
||||
@@ -322,8 +243,7 @@ class CLI( Cmd ):
|
||||
return isatty( self.stdin.fileno() )
|
||||
|
||||
def do_noecho( self, line ):
|
||||
"""Run an interactive command with echoing turned off.
|
||||
Usage: noecho [cmd args]"""
|
||||
"Run an interactive command with echoing turned off."
|
||||
if self.isatty():
|
||||
quietRun( 'stty -echo' )
|
||||
self.default( line )
|
||||
@@ -331,8 +251,7 @@ class CLI( Cmd ):
|
||||
quietRun( 'stty echo' )
|
||||
|
||||
def do_source( self, line ):
|
||||
"""Read commands from an input file.
|
||||
Usage: source <file>"""
|
||||
"Read commands from an input file."
|
||||
args = line.split()
|
||||
if len(args) != 1:
|
||||
error( 'usage: source <file>\n' )
|
||||
@@ -347,12 +266,10 @@ class CLI( Cmd ):
|
||||
break
|
||||
except IOError:
|
||||
error( 'error reading file %s\n' % args[ 0 ] )
|
||||
self.inputFile.close()
|
||||
self.inputFile = None
|
||||
|
||||
def do_dpctl( self, line ):
|
||||
"""Run dpctl (or ovs-ofctl) command on all switches.
|
||||
Usage: dpctl command [arg1] [arg2] ..."""
|
||||
"Run dpctl command on all switches."
|
||||
args = line.split()
|
||||
if len(args) < 1:
|
||||
error( 'usage: dpctl command [arg1] [arg2] ...\n' )
|
||||
@@ -361,40 +278,6 @@ class CLI( Cmd ):
|
||||
output( '*** ' + sw.name + ' ' + ('-' * 72) + '\n' )
|
||||
output( sw.dpctl( *args ) )
|
||||
|
||||
def do_time( self, line ):
|
||||
"Measure time taken for any command in Mininet."
|
||||
start = time.time()
|
||||
self.onecmd(line)
|
||||
elapsed = time.time() - start
|
||||
self.stdout.write("*** Elapsed time: %0.6f secs\n" % elapsed)
|
||||
|
||||
def do_links( self, _line ):
|
||||
"Report on links"
|
||||
for link in self.mn.links:
|
||||
print link, link.status()
|
||||
|
||||
def do_switch( self, line ):
|
||||
"Starts or stops a switch"
|
||||
args = line.split()
|
||||
if len(args) != 2:
|
||||
error( 'invalid number of args: switch <switch name>'
|
||||
'{start, stop}\n' )
|
||||
return
|
||||
sw = args[ 0 ]
|
||||
command = args[ 1 ]
|
||||
if sw not in self.mn or self.mn.get( sw ) not in self.mn.switches:
|
||||
error( 'invalid switch: %s\n' % args[ 1 ] )
|
||||
else:
|
||||
sw = args[ 0 ]
|
||||
command = args[ 1 ]
|
||||
if command == 'start':
|
||||
self.mn.get( sw ).start( self.mn.controllers )
|
||||
elif command == 'stop':
|
||||
self.mn.get( sw ).stop( deleteIntfs=False )
|
||||
else:
|
||||
error( 'invalid command: '
|
||||
'switch <switch name> {start, stop}\n' )
|
||||
|
||||
def default( self, line ):
|
||||
"""Called on an input line when the command prefix is not recognized.
|
||||
Overridden to run shell commands when a node is the first CLI argument.
|
||||
@@ -402,33 +285,36 @@ class CLI( Cmd ):
|
||||
corresponding IP addrs."""
|
||||
|
||||
first, args, line = self.parseline( line )
|
||||
if not args:
|
||||
return
|
||||
if args and len(args) > 0 and args[ -1 ] == '\n':
|
||||
args = args[ :-1 ]
|
||||
rest = args.split( ' ' )
|
||||
|
||||
if first in self.mn:
|
||||
if not args:
|
||||
print "*** Enter a command for node: %s <cmd>" % first
|
||||
return
|
||||
node = self.mn[ first ]
|
||||
rest = args.split( ' ' )
|
||||
if first in self.nodemap:
|
||||
node = self.nodemap[ first ]
|
||||
# Substitute IP addresses for node names in command
|
||||
# If updateIP() returns None, then use node name
|
||||
rest = [ self.mn[ arg ].defaultIntf().updateIP() or arg
|
||||
if arg in self.mn else arg
|
||||
for arg in rest ]
|
||||
rest = [ self.nodemap[ arg ].IP()
|
||||
if arg in self.nodemap else arg
|
||||
for arg in rest ]
|
||||
rest = ' '.join( rest )
|
||||
# Run cmd on node:
|
||||
node.sendCmd( rest )
|
||||
builtin = isShellBuiltin( first )
|
||||
node.sendCmd( rest, printPid=( not builtin ) )
|
||||
self.waitForNode( node )
|
||||
else:
|
||||
error( '*** Unknown command: %s\n' % line )
|
||||
error( '*** Unknown command: %s\n' % first )
|
||||
|
||||
# pylint: enable-msg=R0201
|
||||
|
||||
def waitForNode( self, node ):
|
||||
"Wait for a node to finish, and print its output."
|
||||
"Wait for a node to finish, and print its output."
|
||||
# Pollers
|
||||
nodePoller = poll()
|
||||
nodePoller.register( node.stdout )
|
||||
bothPoller = poll()
|
||||
bothPoller.register( self.stdin, POLLIN )
|
||||
bothPoller.register( node.stdout, POLLIN )
|
||||
bothPoller.register( self.stdin )
|
||||
bothPoller.register( node.stdout )
|
||||
if self.isatty():
|
||||
# Buffer by character, so that interactive
|
||||
# commands sort of work
|
||||
@@ -440,7 +326,7 @@ class CLI( Cmd ):
|
||||
if False and self.inputFile:
|
||||
key = self.inputFile.read( 1 )
|
||||
if key is not '':
|
||||
node.write( key )
|
||||
node.write(key)
|
||||
else:
|
||||
self.inputFile = None
|
||||
if isReadable( self.inPoller ):
|
||||
@@ -452,18 +338,8 @@ class CLI( Cmd ):
|
||||
if not node.waiting:
|
||||
break
|
||||
except KeyboardInterrupt:
|
||||
# There is an at least one race condition here, since
|
||||
# it's possible to interrupt ourselves after we've
|
||||
# read data but before it has been printed.
|
||||
node.sendInt()
|
||||
|
||||
def precmd( self, line ):
|
||||
"allow for comments in the cli"
|
||||
if '#' in line:
|
||||
line = line.split( '#' )[ 0 ]
|
||||
return line
|
||||
|
||||
|
||||
# Helper functions
|
||||
|
||||
def isReadable( poller ):
|
||||
|
||||
@@ -1 +0,0 @@
|
||||
../examples
|
||||
+84
-227
@@ -26,15 +26,14 @@ Link: basic link class for creating veth pairs
|
||||
|
||||
from mininet.log import info, error, debug
|
||||
from mininet.util import makeIntfPair
|
||||
import mininet.node
|
||||
from time import sleep
|
||||
import re
|
||||
|
||||
class Intf( object ):
|
||||
|
||||
"Basic interface object that can configure itself."
|
||||
|
||||
def __init__( self, name, node=None, port=None, link=None,
|
||||
mac=None, **params ):
|
||||
def __init__( self, name, node=None, port=None, link=None, **params ):
|
||||
"""name: interface name (e.g. h1-eth0)
|
||||
node: owning node (where this intf most likely lives)
|
||||
link: parent link if we're part of a link
|
||||
@@ -42,19 +41,9 @@ class Intf( object ):
|
||||
self.node = node
|
||||
self.name = name
|
||||
self.link = link
|
||||
self.mac = mac
|
||||
self.ip, self.prefixLen = None, None
|
||||
|
||||
# if interface is lo, we know the ip is 127.0.0.1.
|
||||
# This saves an ifconfig command per node
|
||||
if self.name == 'lo':
|
||||
self.ip = '127.0.0.1'
|
||||
self.mac, self.ip, self.prefixLen = None, None, None
|
||||
# Add to node (and move ourselves if necessary )
|
||||
moveIntfFn = params.pop( 'moveIntfFn', None )
|
||||
if moveIntfFn:
|
||||
node.addIntf( self, port=port, moveIntfFn=moveIntfFn )
|
||||
else:
|
||||
node.addIntf( self, port=port )
|
||||
node.addIntf( self, port=port )
|
||||
# Save params for future reference
|
||||
self.params = params
|
||||
self.config( **params )
|
||||
@@ -75,9 +64,6 @@ class Intf( object ):
|
||||
self.ip, self.prefixLen = ipstr.split( '/' )
|
||||
return self.ifconfig( ipstr, 'up' )
|
||||
else:
|
||||
if prefixLen is None:
|
||||
raise Exception( 'No prefix length set for IP address %s'
|
||||
% ( ipstr, ) )
|
||||
self.ip, self.prefixLen = ipstr, prefixLen
|
||||
return self.ifconfig( '%s/%s' % ( ipstr, prefixLen ) )
|
||||
|
||||
@@ -94,10 +80,7 @@ class Intf( object ):
|
||||
|
||||
def updateIP( self ):
|
||||
"Return updated IP address based on ifconfig"
|
||||
# use pexec instead of node.cmd so that we dont read
|
||||
# backgrounded output from the cli.
|
||||
ifconfig, _err, _exitCode = self.node.pexec(
|
||||
'ifconfig %s' % self.name )
|
||||
ifconfig = self.ifconfig()
|
||||
ips = self._ipMatchRegex.findall( ifconfig )
|
||||
self.ip = ips[ 0 ] if ips else None
|
||||
return self.ip
|
||||
@@ -109,19 +92,6 @@ class Intf( object ):
|
||||
self.mac = macs[ 0 ] if macs else None
|
||||
return self.mac
|
||||
|
||||
# Instead of updating ip and mac separately,
|
||||
# use one ifconfig call to do it simultaneously.
|
||||
# This saves an ifconfig command, which improves performance.
|
||||
|
||||
def updateAddr( self ):
|
||||
"Return IP address and MAC address based on ifconfig."
|
||||
ifconfig = self.ifconfig()
|
||||
ips = self._ipMatchRegex.findall( ifconfig )
|
||||
macs = self._macMatchRegex.findall( ifconfig )
|
||||
self.ip = ips[ 0 ] if ips else None
|
||||
self.mac = macs[ 0 ] if macs else None
|
||||
return self.ip, self.mac
|
||||
|
||||
def IP( self ):
|
||||
"Return IP address"
|
||||
return self.ip
|
||||
@@ -133,15 +103,8 @@ class Intf( object ):
|
||||
def isUp( self, setUp=False ):
|
||||
"Return whether interface is up"
|
||||
if setUp:
|
||||
cmdOutput = self.ifconfig( 'up' )
|
||||
# no output indicates success
|
||||
if cmdOutput:
|
||||
error( "Error setting %s up: %s " % ( self.name, cmdOutput ) )
|
||||
return False
|
||||
else:
|
||||
return True
|
||||
else:
|
||||
return "UP" in self.ifconfig()
|
||||
self.ifconfig( 'up' )
|
||||
return "UP" in self.ifconfig()
|
||||
|
||||
def rename( self, newname ):
|
||||
"Rename interface"
|
||||
@@ -167,9 +130,9 @@ class Intf( object ):
|
||||
f = getattr( self, method, None )
|
||||
if not f or value is None:
|
||||
return
|
||||
if isinstance( value, list ):
|
||||
if type( value ) is list:
|
||||
result = f( *value )
|
||||
elif isinstance( value, dict ):
|
||||
elif type( value ) is dict:
|
||||
result = f( **value )
|
||||
else:
|
||||
result = f( value )
|
||||
@@ -192,23 +155,15 @@ class Intf( object ):
|
||||
self.setParam( r, 'setIP', ip=ip )
|
||||
self.setParam( r, 'isUp', up=up )
|
||||
self.setParam( r, 'ifconfig', ifconfig=ifconfig )
|
||||
self.updateIP()
|
||||
self.updateMAC()
|
||||
return r
|
||||
|
||||
def delete( self ):
|
||||
"Delete interface"
|
||||
self.cmd( 'ip link del ' + self.name )
|
||||
# We used to do this, but it slows us down:
|
||||
# if self.node.inNamespace:
|
||||
# Link may have been dumped into root NS
|
||||
# quietRun( 'ip link del ' + self.name )
|
||||
|
||||
def status( self ):
|
||||
"Return intf status as a string"
|
||||
links, _err, _result = self.node.pexec( 'ip link show' )
|
||||
if self.name in links:
|
||||
return "OK"
|
||||
else:
|
||||
return "MISSING"
|
||||
# Does it help to sleep to let things run?
|
||||
sleep( 0.001 )
|
||||
|
||||
def __repr__( self ):
|
||||
return '<%s %s>' % ( self.__class__.__name__, self.name )
|
||||
@@ -222,19 +177,15 @@ class TCIntf( Intf ):
|
||||
Allows specification of bandwidth limits (various methods)
|
||||
as well as delay, loss and max queue length"""
|
||||
|
||||
# The parameters we use seem to work reasonably up to 1 Gb/sec
|
||||
# For higher data rates, we will probably need to change them.
|
||||
bwParamMax = 1000
|
||||
|
||||
def bwCmds( self, bw=None, speedup=0, use_hfsc=False, use_tbf=False,
|
||||
latency_ms=None, enable_ecn=False, enable_red=False ):
|
||||
enable_ecn=False, enable_red=False ):
|
||||
"Return tc commands to set bandwidth"
|
||||
|
||||
cmds, parent = [], ' root '
|
||||
|
||||
if bw and ( bw < 0 or bw > self.bwParamMax ):
|
||||
error( 'Bandwidth limit', bw, 'is outside supported range 0..%d'
|
||||
% self.bwParamMax, '- ignoring\n' )
|
||||
if bw and ( bw < 0 or bw > 1000 ):
|
||||
error( 'Bandwidth', bw, 'is outside range 0..1000 Mbps\n' )
|
||||
|
||||
elif bw is not None:
|
||||
# BL: this seems a bit brittle...
|
||||
if ( speedup > 0 and
|
||||
@@ -245,63 +196,59 @@ class TCIntf( Intf ):
|
||||
# are specifying the correct sizes. For now I have used
|
||||
# the same settings we had in the mininet-hifi code.
|
||||
if use_hfsc:
|
||||
cmds += [ '%s qdisc add dev %s root handle 5:0 hfsc default 1',
|
||||
'%s class add dev %s parent 5:0 classid 5:1 hfsc sc '
|
||||
cmds = [ '%s qdisc add dev %s root handle 1:0 hfsc default 1',
|
||||
'%s class add dev %s parent 1:0 classid 1:1 hfsc sc '
|
||||
+ 'rate %fMbit ul rate %fMbit' % ( bw, bw ) ]
|
||||
elif use_tbf:
|
||||
if latency_ms is None:
|
||||
latency_ms = 15 * 8 / bw
|
||||
cmds += [ '%s qdisc add dev %s root handle 5: tbf ' +
|
||||
'rate %fMbit burst 15000 latency %fms' %
|
||||
( bw, latency_ms ) ]
|
||||
latency_us = 10 * 1500 * 8 / bw
|
||||
cmds = ['%s qdisc add dev %s root handle 1: tbf ' +
|
||||
'rate %fMbit burst 15000 latency %fus' %
|
||||
( bw, latency_us ) ]
|
||||
else:
|
||||
cmds += [ '%s qdisc add dev %s root handle 5:0 htb default 1',
|
||||
'%s class add dev %s parent 5:0 classid 5:1 htb ' +
|
||||
'rate %fMbit burst 15k' % bw ]
|
||||
parent = ' parent 5:1 '
|
||||
cmds = [ '%s qdisc add dev %s root handle 1:0 htb default 1',
|
||||
'%s class add dev %s parent 1:0 classid 1:1 htb ' +
|
||||
'rate %fMbit burst 15k' % bw ]
|
||||
parent = ' parent 1:1 '
|
||||
|
||||
# ECN or RED
|
||||
if enable_ecn:
|
||||
cmds += [ '%s qdisc add dev %s' + parent +
|
||||
'handle 6: red limit 1000000 ' +
|
||||
'min 30000 max 35000 avpkt 1500 ' +
|
||||
cmds = [ '%s qdisc add dev %s' + parent +
|
||||
'handle 10: red limit 1000000 ' +
|
||||
'min 20000 max 25000 avpkt 1000 ' +
|
||||
'burst 20 ' +
|
||||
'bandwidth %fmbit probability 1 ecn' % bw ]
|
||||
parent = ' parent 6: '
|
||||
parent = ' parent 10: '
|
||||
elif enable_red:
|
||||
cmds += [ '%s qdisc add dev %s' + parent +
|
||||
'handle 6: red limit 1000000 ' +
|
||||
'min 30000 max 35000 avpkt 1500 ' +
|
||||
cmds = [ '%s qdisc add dev %s' + parent +
|
||||
'handle 10: red limit 1000000 ' +
|
||||
'min 20000 max 25000 avpkt 1000 ' +
|
||||
'burst 20 ' +
|
||||
'bandwidth %fmbit probability 1' % bw ]
|
||||
parent = ' parent 6: '
|
||||
parent = ' parent 10: '
|
||||
|
||||
return cmds, parent
|
||||
|
||||
@staticmethod
|
||||
def delayCmds( parent, delay=None, jitter=None,
|
||||
loss=None, max_queue_size=None ):
|
||||
def delayCmds( parent, delay=None, loss=None,
|
||||
max_queue_size=None ):
|
||||
"Internal method: return tc commands for delay and loss"
|
||||
cmds = []
|
||||
if delay and delay < 0:
|
||||
error( 'Negative delay', delay, '\n' )
|
||||
elif jitter and jitter < 0:
|
||||
error( 'Negative jitter', jitter, '\n' )
|
||||
elif loss and ( loss < 0 or loss > 100 ):
|
||||
error( 'Bad loss percentage', loss, '%%\n' )
|
||||
else:
|
||||
# Delay/jitter/loss/max queue size
|
||||
netemargs = '%s%s%s%s' % (
|
||||
# Delay/loss/max queue size
|
||||
netemargs = '%s%s%s' % (
|
||||
'delay %s ' % delay if delay is not None else '',
|
||||
'%s ' % jitter if jitter is not None else '',
|
||||
'loss %d ' % loss if loss is not None else '',
|
||||
'limit %d' % max_queue_size if max_queue_size is not None
|
||||
else '' )
|
||||
else '' )
|
||||
if netemargs:
|
||||
cmds = [ '%s qdisc add dev %s ' + parent +
|
||||
' handle 10: netem ' +
|
||||
netemargs ]
|
||||
parent = ' parent 10:1 '
|
||||
return cmds, parent
|
||||
netemargs ]
|
||||
return cmds
|
||||
|
||||
def tc( self, cmd, tc='tc' ):
|
||||
"Execute tc command for our interface"
|
||||
@@ -309,10 +256,9 @@ class TCIntf( Intf ):
|
||||
debug(" *** executing command: %s\n" % c)
|
||||
return self.cmd( c )
|
||||
|
||||
def config( self, bw=None, delay=None, jitter=None, loss=None,
|
||||
disable_gro=True, speedup=0, use_hfsc=False, use_tbf=False,
|
||||
latency_ms=None, enable_ecn=False, enable_red=False,
|
||||
max_queue_size=None, **params ):
|
||||
def config( self, bw=None, delay=None, loss=None, disable_gro=True,
|
||||
speedup=0, use_hfsc=False, use_tbf=False, enable_ecn=False,
|
||||
enable_red=False, max_queue_size=None, **params ):
|
||||
"Configure the port and set its properties."
|
||||
|
||||
result = Intf.config( self, **params)
|
||||
@@ -328,46 +274,34 @@ class TCIntf( Intf ):
|
||||
return
|
||||
|
||||
# Clear existing configuration
|
||||
tcoutput = self.tc( '%s qdisc show dev %s' )
|
||||
if "priomap" not in tcoutput:
|
||||
cmds = [ '%s qdisc del dev %s root' ]
|
||||
else:
|
||||
cmds = []
|
||||
cmds = [ '%s qdisc del dev %s root' ]
|
||||
|
||||
# Bandwidth limits via various methods
|
||||
bwcmds, parent = self.bwCmds( bw=bw, speedup=speedup,
|
||||
use_hfsc=use_hfsc, use_tbf=use_tbf,
|
||||
latency_ms=latency_ms,
|
||||
enable_ecn=enable_ecn,
|
||||
enable_red=enable_red )
|
||||
use_hfsc=use_hfsc, use_tbf=use_tbf,
|
||||
enable_ecn=enable_ecn,
|
||||
enable_red=enable_red )
|
||||
cmds += bwcmds
|
||||
|
||||
# Delay/jitter/loss/max_queue_size using netem
|
||||
delaycmds, parent = self.delayCmds( delay=delay, jitter=jitter,
|
||||
loss=loss,
|
||||
max_queue_size=max_queue_size,
|
||||
parent=parent )
|
||||
cmds += delaycmds
|
||||
# Delay/loss/max_queue_size using netem
|
||||
cmds += self.delayCmds( delay=delay, loss=loss,
|
||||
max_queue_size=max_queue_size,
|
||||
parent=parent )
|
||||
|
||||
# Ugly but functional: display configuration info
|
||||
stuff = ( ( [ '%.2fMbit' % bw ] if bw is not None else [] ) +
|
||||
( [ '%s delay' % delay ] if delay is not None else [] ) +
|
||||
( [ '%s jitter' % jitter ] if jitter is not None else [] ) +
|
||||
( ['%d%% loss' % loss ] if loss is not None else [] ) +
|
||||
( [ 'ECN' ] if enable_ecn else [ 'RED' ]
|
||||
( [ 'ECN' ] if enable_ecn else [ 'RED' ]
|
||||
if enable_red else [] ) )
|
||||
info( '(' + ' '.join( stuff ) + ') ' )
|
||||
|
||||
# Execute all the commands in our node
|
||||
debug("at map stage w/cmds: %s\n" % cmds)
|
||||
tcoutputs = [ self.tc(cmd) for cmd in cmds ]
|
||||
for output in tcoutputs:
|
||||
if output != '':
|
||||
error( "*** Error: %s" % output )
|
||||
debug( "cmds:", cmds, '\n' )
|
||||
debug( "outputs:", tcoutputs, '\n' )
|
||||
result[ 'tcoutputs'] = tcoutputs
|
||||
result[ 'parent' ] = parent
|
||||
|
||||
return result
|
||||
|
||||
@@ -377,11 +311,10 @@ class Link( object ):
|
||||
"""A basic link is just a veth pair.
|
||||
Other types of links could be tunnels, link emulators, etc.."""
|
||||
|
||||
# pylint: disable=too-many-branches
|
||||
def __init__( self, node1, node2, port1=None, port2=None,
|
||||
intfName1=None, intfName2=None, addr1=None, addr2=None,
|
||||
intfName1=None, intfName2=None,
|
||||
intf=Intf, cls1=None, cls2=None, params1=None,
|
||||
params2=None, fast=True ):
|
||||
params2=None ):
|
||||
"""Create veth link to another node, making two new interfaces.
|
||||
node1: first node
|
||||
node2: second node
|
||||
@@ -394,141 +327,65 @@ class Link( object ):
|
||||
params1: parameters for interface 1
|
||||
params2: parameters for interface 2"""
|
||||
# This is a bit awkward; it seems that having everything in
|
||||
# params is more orthogonal, but being able to specify
|
||||
# in-line arguments is more convenient! So we support both.
|
||||
if params1 is None:
|
||||
params1 = {}
|
||||
if params2 is None:
|
||||
params2 = {}
|
||||
# Allow passing in params1=params2
|
||||
if params2 is params1:
|
||||
params2 = dict( params1 )
|
||||
if port1 is not None:
|
||||
params1[ 'port' ] = port1
|
||||
if port2 is not None:
|
||||
params2[ 'port' ] = port2
|
||||
if 'port' not in params1:
|
||||
params1[ 'port' ] = node1.newPort()
|
||||
if 'port' not in params2:
|
||||
params2[ 'port' ] = node2.newPort()
|
||||
# params would be more orthogonal, but being able to specify
|
||||
# in-line arguments is more convenient!
|
||||
if port1 is None:
|
||||
port1 = node1.newPort()
|
||||
if port2 is None:
|
||||
port2 = node2.newPort()
|
||||
if not intfName1:
|
||||
intfName1 = self.intfName( node1, params1[ 'port' ] )
|
||||
intfName1 = self.intfName( node1, port1 )
|
||||
if not intfName2:
|
||||
intfName2 = self.intfName( node2, params2[ 'port' ] )
|
||||
intfName2 = self.intfName( node2, port2 )
|
||||
|
||||
self.fast = fast
|
||||
if fast:
|
||||
params1.setdefault( 'moveIntfFn', self._ignore )
|
||||
params2.setdefault( 'moveIntfFn', self._ignore )
|
||||
self.makeIntfPair( intfName1, intfName2, addr1, addr2,
|
||||
node1, node2, deleteIntfs=False )
|
||||
else:
|
||||
self.makeIntfPair( intfName1, intfName2, addr1, addr2 )
|
||||
self.makeIntfPair( intfName1, intfName2 )
|
||||
|
||||
if not cls1:
|
||||
cls1 = intf
|
||||
if not cls2:
|
||||
cls2 = intf
|
||||
if not params1:
|
||||
params1 = {}
|
||||
if not params2:
|
||||
params2 = {}
|
||||
|
||||
intf1 = cls1( name=intfName1, node=node1,
|
||||
link=self, mac=addr1, **params1 )
|
||||
intf2 = cls2( name=intfName2, node=node2,
|
||||
link=self, mac=addr2, **params2 )
|
||||
intf1 = cls1( name=intfName1, node=node1, port=port1,
|
||||
link=self, **params1 )
|
||||
intf2 = cls2( name=intfName2, node=node2, port=port2,
|
||||
link=self, **params2 )
|
||||
|
||||
# All we are is dust in the wind, and our two interfaces
|
||||
self.intf1, self.intf2 = intf1, intf2
|
||||
# pylint: enable=too-many-branches
|
||||
|
||||
@staticmethod
|
||||
def _ignore( *args, **kwargs ):
|
||||
"Ignore any arguments"
|
||||
pass
|
||||
|
||||
def intfName( self, node, n ):
|
||||
@classmethod
|
||||
def intfName( cls, node, n ):
|
||||
"Construct a canonical interface name node-ethN for interface n."
|
||||
# Leave this as an instance method for now
|
||||
assert self
|
||||
return node.name + '-eth' + repr( n )
|
||||
|
||||
@classmethod
|
||||
def makeIntfPair( cls, intfname1, intfname2, addr1=None, addr2=None,
|
||||
node1=None, node2=None, deleteIntfs=True ):
|
||||
def makeIntfPair( cls, intf1, intf2 ):
|
||||
"""Create pair of interfaces
|
||||
intfname1: name for interface 1
|
||||
intfname2: name for interface 2
|
||||
addr1: MAC address for interface 1 (optional)
|
||||
addr2: MAC address for interface 2 (optional)
|
||||
node1: home node for interface 1 (optional)
|
||||
node2: home node for interface 2 (optional)
|
||||
(override this method [and possibly delete()]
|
||||
intf1: name of interface 1
|
||||
intf2: name of interface 2
|
||||
(override this class method [and possibly delete()]
|
||||
to change link type)"""
|
||||
# Leave this as a class method for now
|
||||
assert cls
|
||||
return makeIntfPair( intfname1, intfname2, addr1, addr2, node1, node2,
|
||||
deleteIntfs=deleteIntfs )
|
||||
makeIntfPair( intf1, intf2 )
|
||||
|
||||
def delete( self ):
|
||||
"Delete this link"
|
||||
self.intf1.delete()
|
||||
# We only need to delete one side, though this doesn't seem to
|
||||
# cost us much and might help subclasses.
|
||||
# self.intf2.delete()
|
||||
|
||||
def stop( self ):
|
||||
"Override to stop and clean up link as needed"
|
||||
self.delete()
|
||||
|
||||
def status( self ):
|
||||
"Return link status as a string"
|
||||
return "(%s %s)" % ( self.intf1.status(), self.intf2.status() )
|
||||
self.intf2.delete()
|
||||
|
||||
def __str__( self ):
|
||||
return '%s<->%s' % ( self.intf1, self.intf2 )
|
||||
|
||||
|
||||
class OVSIntf( Intf ):
|
||||
"Patch interface on an OVSSwitch"
|
||||
|
||||
def ifconfig( self, *args ):
|
||||
cmd = ' '.join( args )
|
||||
if cmd == 'up':
|
||||
# OVSIntf is always up
|
||||
return
|
||||
else:
|
||||
raise Exception( 'OVSIntf cannot do ifconfig ' + cmd )
|
||||
|
||||
|
||||
class OVSLink( Link ):
|
||||
"""Link that makes patch links between OVSSwitches
|
||||
Warning: in testing we have found that no more
|
||||
than ~64 OVS patch links should be used in row."""
|
||||
|
||||
def __init__( self, node1, node2, **kwargs ):
|
||||
"See Link.__init__() for options"
|
||||
self.isPatchLink = False
|
||||
if ( isinstance( node1, mininet.node.OVSSwitch ) and
|
||||
isinstance( node2, mininet.node.OVSSwitch ) ):
|
||||
self.isPatchLink = True
|
||||
kwargs.update( cls1=OVSIntf, cls2=OVSIntf )
|
||||
Link.__init__( self, node1, node2, **kwargs )
|
||||
|
||||
def makeIntfPair( self, *args, **kwargs ):
|
||||
"Usually delegated to OVSSwitch"
|
||||
if self.isPatchLink:
|
||||
return None, None
|
||||
else:
|
||||
return Link.makeIntfPair( *args, **kwargs )
|
||||
|
||||
|
||||
class TCLink( Link ):
|
||||
"Link with symmetric TC interfaces configured via opts"
|
||||
def __init__( self, node1, node2, port1=None, port2=None,
|
||||
intfName1=None, intfName2=None,
|
||||
addr1=None, addr2=None, **params ):
|
||||
intfName1=None, intfName2=None, **params ):
|
||||
Link.__init__( self, node1, node2, port1=port1, port2=port2,
|
||||
intfName1=intfName1, intfName2=intfName2,
|
||||
cls1=TCIntf,
|
||||
cls2=TCIntf,
|
||||
addr1=addr1, addr2=addr2,
|
||||
params1=params,
|
||||
params2=params )
|
||||
params2=params)
|
||||
|
||||
+20
-18
@@ -11,11 +11,11 @@ import types
|
||||
OUTPUT = 25
|
||||
|
||||
LEVELS = { 'debug': logging.DEBUG,
|
||||
'info': logging.INFO,
|
||||
'output': OUTPUT,
|
||||
'warning': logging.WARNING,
|
||||
'error': logging.ERROR,
|
||||
'critical': logging.CRITICAL }
|
||||
'info': logging.INFO,
|
||||
'output': OUTPUT,
|
||||
'warning': logging.WARNING,
|
||||
'error': logging.ERROR,
|
||||
'critical': logging.CRITICAL }
|
||||
|
||||
# change this to logging.INFO to get printouts when running unit tests
|
||||
LOGLEVELDEFAULT = OUTPUT
|
||||
@@ -57,19 +57,21 @@ class StreamHandlerNoNewline( logging.StreamHandler ):
|
||||
|
||||
class Singleton( type ):
|
||||
"""Singleton pattern from Wikipedia
|
||||
See http://en.wikipedia.org/wiki/Singleton_Pattern
|
||||
See http://en.wikipedia.org/wiki/SingletonPattern#Python
|
||||
|
||||
Intended to be used as a __metaclass_ param, as shown for the class
|
||||
below."""
|
||||
below.
|
||||
|
||||
def __init__( cls, name, bases, dict_ ):
|
||||
super( Singleton, cls ).__init__( name, bases, dict_ )
|
||||
cls.instance = None
|
||||
Changed cls first args to mcs to satisfy pylint."""
|
||||
|
||||
def __call__( cls, *args, **kw ):
|
||||
if cls.instance is None:
|
||||
cls.instance = super( Singleton, cls ).__call__( *args, **kw )
|
||||
return cls.instance
|
||||
def __init__( mcs, name, bases, dict_ ):
|
||||
super( Singleton, mcs ).__init__( name, bases, dict_ )
|
||||
mcs.instance = None
|
||||
|
||||
def __call__( mcs, *args, **kw ):
|
||||
if mcs.instance is None:
|
||||
mcs.instance = super( Singleton, mcs ).__call__( *args, **kw )
|
||||
return mcs.instance
|
||||
|
||||
|
||||
class MininetLogger( Logger, object ):
|
||||
@@ -115,7 +117,7 @@ class MininetLogger( Logger, object ):
|
||||
Convenience function to support lowercase names.
|
||||
levelName: level name from LEVELS"""
|
||||
level = LOGLEVELDEFAULT
|
||||
if levelname is not None:
|
||||
if levelname != None:
|
||||
if levelname not in LEVELS:
|
||||
raise Exception( 'unknown levelname seen in setLogLevel' )
|
||||
else:
|
||||
@@ -124,8 +126,8 @@ class MininetLogger( Logger, object ):
|
||||
self.setLevel( level )
|
||||
self.handlers[ 0 ].setLevel( level )
|
||||
|
||||
# pylint: disable=method-hidden
|
||||
# "An attribute inherited from mininet.log hide this method" (sic)
|
||||
# pylint: disable-msg=E0202
|
||||
# "An attribute inherited from mininet.log hide this method"
|
||||
# Not sure why this is occurring - this function definitely gets called.
|
||||
|
||||
# See /usr/lib/python2.5/logging/__init__.py; modified from warning()
|
||||
@@ -142,7 +144,7 @@ class MininetLogger( Logger, object ):
|
||||
if self.isEnabledFor( OUTPUT ):
|
||||
self._log( OUTPUT, msg, args, kwargs )
|
||||
|
||||
# pylint: enable=method-hidden
|
||||
# pylint: enable-msg=E0202
|
||||
|
||||
lg = MininetLogger()
|
||||
|
||||
|
||||
@@ -19,7 +19,7 @@ def modprobe( mod ):
|
||||
return quietRun( [ 'modprobe', mod ] )
|
||||
|
||||
OF_KMOD = 'ofdatapath'
|
||||
OVS_KMOD = 'openvswitch_mod' # Renamed 'openvswitch' in OVS 1.7+/Linux 3.5+
|
||||
OVS_KMOD = 'openvswitch_mod'
|
||||
TUN = 'tun'
|
||||
|
||||
def moduleDeps( subtract=None, add=None ):
|
||||
@@ -28,9 +28,9 @@ def moduleDeps( subtract=None, add=None ):
|
||||
add: string or list of module names to add, if not already loaded"""
|
||||
subtract = subtract if subtract is not None else []
|
||||
add = add if add is not None else []
|
||||
if isinstance( subtract, basestring ):
|
||||
if type( subtract ) is str:
|
||||
subtract = [ subtract ]
|
||||
if isinstance( add, basestring ):
|
||||
if type( add ) is str:
|
||||
add = [ add ]
|
||||
for mod in subtract:
|
||||
if mod in lsmod():
|
||||
@@ -48,8 +48,8 @@ def moduleDeps( subtract=None, add=None ):
|
||||
modprobeOutput = modprobe( mod )
|
||||
if modprobeOutput:
|
||||
error( 'Error inserting ' + mod +
|
||||
' - is it installed and available via modprobe?\n' +
|
||||
'Error was: "%s"\n' % modprobeOutput )
|
||||
' - is it installed and available via modprobe?\n' +
|
||||
'Error was: "%s"\n' % modprobeOutput )
|
||||
if mod not in lsmod():
|
||||
error( 'Failed to insert ' + mod + ' - quitting.\n' )
|
||||
exit( 1 )
|
||||
@@ -63,6 +63,6 @@ def pathCheck( *args, **kwargs ):
|
||||
for arg in args:
|
||||
if not quietRun( 'which ' + arg ):
|
||||
error( 'Cannot find required executable %s.\n' % arg +
|
||||
'Please make sure that %s is installed ' % moduleName +
|
||||
'and available in your $PATH:\n(%s)\n' % environ[ 'PATH' ] )
|
||||
'Please make sure that %s is installed ' % moduleName +
|
||||
'and available in your $PATH:\n(%s)\n' % environ[ 'PATH' ] )
|
||||
exit( 1 )
|
||||
|
||||
@@ -0,0 +1,145 @@
|
||||
from time import sleep, time
|
||||
from subprocess import Popen, PIPE
|
||||
from multiprocessing import Process
|
||||
import re
|
||||
import os
|
||||
|
||||
from mininet.log import info, error, debug, output
|
||||
from mininet.util import quietRun
|
||||
|
||||
class Monitor(object):
|
||||
|
||||
def __init__(self, output_dir='/tmp'):
|
||||
self.monitors = []
|
||||
self.output_dir = output_dir
|
||||
|
||||
# Add general process monitors
|
||||
# Bandwidth monitor
|
||||
self.monitors.append(Process(target=self.monitor_devs_ng,
|
||||
args=('%s/bwm.txt' % self.output_dir, 1.0)))
|
||||
|
||||
# CPU monitor
|
||||
self.monitors.append(Process(target=self.monitor_cpu,
|
||||
args=('%s/cpu.txt' % self.output_dir, )))
|
||||
|
||||
# cwnd monitor: tcp_probe
|
||||
self.monitors.append(Process(target=self.monitor_cwnd,
|
||||
args=('%s/tcp_probe.txt' % self.output_dir, )))
|
||||
|
||||
def start(self):
|
||||
'''Start all the system monitors'''
|
||||
|
||||
# Set output directory
|
||||
self.set_output_dir(self.output_dir)
|
||||
|
||||
# Start the monitors
|
||||
for m in self.monitors:
|
||||
m.start()
|
||||
|
||||
def stop(self):
|
||||
'''Terminate all the system monitors'''
|
||||
# Stop the monitors
|
||||
for m in self.monitors:
|
||||
m.terminate()
|
||||
self.monitors = []
|
||||
Popen("killall -9 bwm-ng top", shell=True).wait()
|
||||
Popen("killall -9 cat; rmmod tcp_probe > /dev/null 2>&1;", shell=True).wait()
|
||||
|
||||
def set_output_dir(self, output_dir):
|
||||
# Create output directory if it doesn't exist already
|
||||
self.output_dir = output_dir
|
||||
debug('Monitoring output dir: %s' % self.output_dir)
|
||||
if not os.path.isdir(self.output_dir):
|
||||
os.makedirs(self.output_dir)
|
||||
|
||||
def monitor_qlen(self, iface, interval_sec = 0.01, fname='%s/qlen.txt' % '.'):
|
||||
pat_queued = re.compile(r'backlog\s[^\s]+\s([\d]+)p')
|
||||
cmd = "tc -s qdisc show dev %s" % (iface)
|
||||
ret = []
|
||||
open(fname, 'w').write('')
|
||||
while 1:
|
||||
p = Popen(cmd, shell=True, stdout=PIPE)
|
||||
output = p.stdout.read()
|
||||
# Not quite right, but will do for now
|
||||
matches = pat_queued.findall(output)
|
||||
if matches and len(matches) > 1:
|
||||
ret.append(matches[1])
|
||||
t = "%f" % time()
|
||||
open(fname, 'a').write(t + ',' + matches[1] + '\n')
|
||||
sleep(interval_sec)
|
||||
return
|
||||
|
||||
def monitor_cwnd(self, fname='%s/tcp_probe.txt' % '.'):
|
||||
Popen("rmmod tcp_probe > /dev/null 2>&1; modprobe tcp_probe;", shell=True).wait()
|
||||
Popen("cat /proc/net/tcpprobe > %s" % fname, shell=True).wait()
|
||||
|
||||
def monitor_devs_ng(self, fname="%s/txrate.txt" % '.', interval_sec=0.01):
|
||||
"""Uses bwm-ng tool to collect iface tx rate stats. Very reliable."""
|
||||
cmd = "sleep 1; bwm-ng -t %s -o csv -u bits -T rate -C ',' > %s" % (interval_sec * 1000, fname)
|
||||
Popen(cmd, shell=True).wait()
|
||||
|
||||
def monitor_cpu(self, fname="%s/cpu.txt" % '.'):
|
||||
cmd = "(top -b -p 1 -d 1 | grep --line-buffered \"^Cpu\") > %s" % fname
|
||||
Popen(cmd, shell=True).wait()
|
||||
|
||||
def monitor_cpuacct(self, hosts, fname="%s/cpuacct.txt" % '.', interval_sec=1.0):
|
||||
prereqs = ['cgget']
|
||||
for p in prereqs:
|
||||
if not quietRun('which ' + p):
|
||||
error('Could not find %s... not monitoring cpuacct' % p)
|
||||
return
|
||||
hnames = ' '.join([h.name for h in hosts])
|
||||
cpuacct_cmd = 'cgget -g cpuacct %s >> %s' % (hnames, fname)
|
||||
prev_time = time()
|
||||
while 1:
|
||||
sleep(interval_sec - (time() - prev_time))
|
||||
prev_time = time()
|
||||
cpu_usage = Popen(cpuacct_cmd, shell=True).wait()
|
||||
return
|
||||
|
||||
# Obsolete: Use bwm-ng instead (monitor_devs_ng), for reliable stats
|
||||
def monitor_count(self, ipt_args="--src 10.0.0.0/8", interval_sec=0.01, fname='%s/bytes_sent.txt' % '.', chain="OUTPUT"):
|
||||
cmd = "iptables -I %(chain)s 1 %(filter)s -j RETURN" % {
|
||||
"filter": ipt_args,
|
||||
"chain": chain,
|
||||
}
|
||||
# We always erase the first rule; will fix this later
|
||||
Popen("iptables -D %s 1" % chain, shell=True).wait()
|
||||
# Add our rule
|
||||
Popen(cmd, shell=True).wait()
|
||||
open(fname, 'w').write('')
|
||||
cmd = "iptables -vnL %s 1 -Z" % (chain)
|
||||
while 1:
|
||||
p = Popen(cmd, shell=True, stdout=PIPE)
|
||||
output = p.stdout.read().strip()
|
||||
values = output.split(' ')
|
||||
if len(values) > 2:
|
||||
t = "%f" % time()
|
||||
pkts, bytes = values[0], values[1]
|
||||
open(fname, 'a').write(','.join([t, pkts, bytes]) + '\n')
|
||||
sleep(interval_sec)
|
||||
return
|
||||
|
||||
# Obsolete: Use bwm-ng instead (monitor_devs_ng), for reliable stats
|
||||
def monitor_devs(self, dev_pattern='^sw', fname="%s/bytes_sent.txt" % '.', interval_sec=0.01):
|
||||
"""Aggregates (sums) all txed bytes and rate (in Mbps) from devices whose name
|
||||
matches @dev_pattern and writes to @fname"""
|
||||
pat = re.compile(dev_pattern)
|
||||
spaces = re.compile('\s+')
|
||||
open(fname, 'w').write('')
|
||||
prev_tx = {}
|
||||
while 1:
|
||||
lines = open('/proc/net/dev').read().split('\n')
|
||||
t = str(time())
|
||||
total = 0
|
||||
for line in lines:
|
||||
line = spaces.split(line.strip())
|
||||
iface = line[0]
|
||||
if pat.match(iface) and len(line) > 9:
|
||||
tx_bytes = int(line[9])
|
||||
total += tx_bytes - prev_tx.get(iface, tx_bytes)
|
||||
prev_tx[iface] = tx_bytes
|
||||
open(fname, 'a').write(','.join([t, str(total * 8 / interval_sec / 1e6), str(total)]) + "\n")
|
||||
sleep(interval_sec)
|
||||
return
|
||||
|
||||
+118
-400
@@ -90,35 +90,28 @@ import os
|
||||
import re
|
||||
import select
|
||||
import signal
|
||||
import random
|
||||
|
||||
from time import sleep
|
||||
from itertools import chain, groupby
|
||||
from math import ceil
|
||||
from datetime import datetime
|
||||
from multiprocessing import Process
|
||||
|
||||
from mininet.cli import CLI
|
||||
from mininet.log import info, error, debug, output, warn
|
||||
from mininet.node import ( Node, Host, OVSKernelSwitch, DefaultController,
|
||||
Controller )
|
||||
from mininet.nodelib import NAT
|
||||
from mininet.log import info, error, debug, output
|
||||
from mininet.node import Host, OVSKernelSwitch, Controller
|
||||
from mininet.link import Link, Intf
|
||||
from mininet.util import ( quietRun, fixLimits, numCores, ensureRoot,
|
||||
macColonHex, ipStr, ipParse, netParse, ipAdd,
|
||||
waitListening )
|
||||
from mininet.util import quietRun, fixLimits, numCores
|
||||
from mininet.util import macColonHex, ipStr, ipParse, netParse, ipAdd
|
||||
from mininet.term import cleanUpScreens, makeTerms
|
||||
|
||||
# Mininet version: should be consistent with README and LICENSE
|
||||
VERSION = "2.2.1"
|
||||
from mininet.monitor import Monitor
|
||||
|
||||
class Mininet( object ):
|
||||
"Network emulation with hosts spawned in network namespaces."
|
||||
|
||||
def __init__( self, topo=None, switch=OVSKernelSwitch, host=Host,
|
||||
controller=DefaultController, link=Link, intf=Intf,
|
||||
build=True, xterms=False, cleanup=False, ipBase='10.0.0.0/8',
|
||||
inNamespace=False,
|
||||
autoSetMacs=False, autoStaticArp=False, autoPinCpus=False,
|
||||
listenPort=None, waitConnected=False ):
|
||||
controller=Controller, link=Link, intf=Intf,
|
||||
build=True, xterms=False, cleanup=False, ipBase='10.0.0.0/8',
|
||||
inNamespace=False,
|
||||
autoSetMacs=False, autoStaticArp=False, autoPinCpus=False,
|
||||
listenPort=None ):
|
||||
"""Create Mininet object.
|
||||
topo: Topo (topology) object or None
|
||||
switch: default Switch class
|
||||
@@ -154,12 +147,11 @@ class Mininet( object ):
|
||||
self.numCores = numCores()
|
||||
self.nextCore = 0 # next core for pinning hosts to CPUs
|
||||
self.listenPort = listenPort
|
||||
self.waitConn = waitConnected
|
||||
self.monitoring = None
|
||||
|
||||
self.hosts = []
|
||||
self.switches = []
|
||||
self.controllers = []
|
||||
self.links = []
|
||||
|
||||
self.nameToNode = {} # name to Node (Host/Switch) objects
|
||||
|
||||
@@ -171,35 +163,12 @@ class Mininet( object ):
|
||||
if topo and build:
|
||||
self.build()
|
||||
|
||||
def waitConnected( self, timeout=None, delay=.5 ):
|
||||
"""wait for each switch to connect to a controller,
|
||||
up to 5 seconds
|
||||
timeout: time to wait, or None to wait indefinitely
|
||||
delay: seconds to sleep per iteration
|
||||
returns: True if all switches are connected"""
|
||||
info( '*** Waiting for switches to connect\n' )
|
||||
time = 0
|
||||
remaining = list( self.switches )
|
||||
while True:
|
||||
for switch in tuple( remaining ):
|
||||
if switch.connected():
|
||||
info( '%s ' % switch )
|
||||
remaining.remove( switch )
|
||||
if not remaining:
|
||||
info( '\n' )
|
||||
return True
|
||||
if time > timeout and timeout is not None:
|
||||
break
|
||||
sleep( delay )
|
||||
time += delay
|
||||
warn( 'Timed out after %d seconds\n' % time )
|
||||
for switch in remaining:
|
||||
if not switch.connected():
|
||||
warn( 'Warning: %s is not connected to a controller\n'
|
||||
% switch.name )
|
||||
else:
|
||||
remaining.remove( switch )
|
||||
return not remaining
|
||||
def set_debug(self, output_dir=None):
|
||||
'''Enable debugging, with output to the specified directory'''
|
||||
dt = datetime.now()
|
||||
if not output_dir:
|
||||
output_dir = '/tmp/mininet-%s-%s' % (str(dt.date()), str(dt.time()))
|
||||
self.monitoring = Monitor(output_dir=output_dir)
|
||||
|
||||
def addHost( self, name, cls=None, **params ):
|
||||
"""Add host.
|
||||
@@ -210,10 +179,9 @@ class Mininet( object ):
|
||||
# Default IP and MAC addresses
|
||||
defaults = { 'ip': ipAdd( self.nextIP,
|
||||
ipBaseNum=self.ipBaseNum,
|
||||
prefixLen=self.prefixLen ) +
|
||||
'/%s' % self.prefixLen }
|
||||
prefixLen=self.prefixLen ) }
|
||||
if self.autoSetMacs:
|
||||
defaults[ 'mac' ] = macColonHex( self.nextIP )
|
||||
defaults[ 'mac'] = macColonHex( self.nextIP )
|
||||
if self.autoPinCpus:
|
||||
defaults[ 'cores' ] = self.nextCore
|
||||
self.nextCore = ( self.nextCore + 1 ) % self.numCores
|
||||
@@ -247,142 +215,50 @@ class Mininet( object ):
|
||||
def addController( self, name='c0', controller=None, **params ):
|
||||
"""Add controller.
|
||||
controller: Controller class"""
|
||||
# Get controller class
|
||||
if not controller:
|
||||
controller = self.controller
|
||||
# Construct new controller if one is not given
|
||||
if isinstance( name, Controller ):
|
||||
controller_new = name
|
||||
# Pylint thinks controller is a str()
|
||||
# pylint: disable=maybe-no-member
|
||||
name = controller_new.name
|
||||
# pylint: enable=maybe-no-member
|
||||
else:
|
||||
controller_new = controller( name, **params )
|
||||
# Add new controller to net
|
||||
controller_new = controller( name, **params )
|
||||
if controller_new: # allow controller-less setups
|
||||
self.controllers.append( controller_new )
|
||||
self.nameToNode[ name ] = controller_new
|
||||
return controller_new
|
||||
|
||||
def addNAT( self, name='nat0', connect=True, inNamespace=False,
|
||||
**params):
|
||||
"""Add a NAT to the Mininet network
|
||||
name: name of NAT node
|
||||
connect: switch to connect to | True (s1) | None
|
||||
inNamespace: create in a network namespace
|
||||
params: other NAT node params, notably:
|
||||
ip: used as default gateway address"""
|
||||
nat = self.addHost( name, cls=NAT, inNamespace=inNamespace,
|
||||
subnet=self.ipBase, **params )
|
||||
# find first switch and create link
|
||||
if connect:
|
||||
if not isinstance( connect, Node ):
|
||||
# Use first switch if not specified
|
||||
connect = self.switches[ 0 ]
|
||||
# Connect the nat to the switch
|
||||
self.addLink( nat, self.switches[ 0 ] )
|
||||
# Set the default route on hosts
|
||||
natIP = nat.params[ 'ip' ].split('/')[ 0 ]
|
||||
for host in self.hosts:
|
||||
if host.inNamespace:
|
||||
host.setDefaultRoute( 'via %s' % natIP )
|
||||
return nat
|
||||
|
||||
# BL: We now have four ways to look up nodes
|
||||
# This may (should?) be cleaned up in the future.
|
||||
# BL: is this better than just using nameToNode[] ?
|
||||
# Should it have a better name?
|
||||
def getNodeByName( self, *args ):
|
||||
"Return node(s) with given name(s)"
|
||||
if len( args ) == 1:
|
||||
return self.nameToNode[ args[ 0 ] ]
|
||||
return [ self.nameToNode[ n ] for n in args ]
|
||||
|
||||
def get( self, *args ):
|
||||
"Convenience alias for getNodeByName"
|
||||
return self.getNodeByName( *args )
|
||||
|
||||
# Even more convenient syntax for node lookup and iteration
|
||||
def __getitem__( self, key ):
|
||||
"""net [ name ] operator: Return node(s) with given name(s)"""
|
||||
return self.nameToNode[ key ]
|
||||
|
||||
def __iter__( self ):
|
||||
"return iterator over node names"
|
||||
for node in chain( self.hosts, self.switches, self.controllers ):
|
||||
yield node.name
|
||||
|
||||
def __len__( self ):
|
||||
"returns number of nodes in net"
|
||||
return ( len( self.hosts ) + len( self.switches ) +
|
||||
len( self.controllers ) )
|
||||
|
||||
def __contains__( self, item ):
|
||||
"returns True if net contains named node"
|
||||
return item in self.nameToNode
|
||||
|
||||
def keys( self ):
|
||||
"return a list of all node names or net's keys"
|
||||
return list( self )
|
||||
|
||||
def values( self ):
|
||||
"return a list of all nodes or net's values"
|
||||
return [ self[name] for name in self ]
|
||||
|
||||
def items( self ):
|
||||
"return (key,value) tuple list for every node in net"
|
||||
return zip( self.keys(), self.values() )
|
||||
|
||||
@staticmethod
|
||||
def randMac():
|
||||
"Return a random, non-multicast MAC address"
|
||||
return macColonHex( random.randint(1, 2**48 - 1) & 0xfeffffffffff |
|
||||
0x020000000000 )
|
||||
|
||||
def addLink( self, node1, node2, port1=None, port2=None,
|
||||
cls=None, **params ):
|
||||
""""Add a link from node1 to node2
|
||||
node1: source node (or name)
|
||||
node2: dest node (or name)
|
||||
port1: source port (optional)
|
||||
port2: dest port (optional)
|
||||
cls: link class (optional)
|
||||
params: additional link params (optional)
|
||||
node1: source node
|
||||
node2: dest node
|
||||
port1: source port
|
||||
port2: dest port
|
||||
returns: link object"""
|
||||
# Accept node objects or names
|
||||
node1 = node1 if not isinstance( node1, basestring ) else self[ node1 ]
|
||||
node2 = node2 if not isinstance( node2, basestring ) else self[ node2 ]
|
||||
options = dict( params )
|
||||
# Port is optional
|
||||
if port1 is not None:
|
||||
options.setdefault( 'port1', port1 )
|
||||
if port2 is not None:
|
||||
options.setdefault( 'port2', port2 )
|
||||
if self.intf is not None:
|
||||
options.setdefault( 'intf', self.intf )
|
||||
# Set default MAC - this should probably be in Link
|
||||
options.setdefault( 'addr1', self.randMac() )
|
||||
options.setdefault( 'addr2', self.randMac() )
|
||||
cls = self.link if cls is None else cls
|
||||
link = cls( node1, node2, **options )
|
||||
self.links.append( link )
|
||||
return link
|
||||
defaults = { 'port1': port1,
|
||||
'port2': port2,
|
||||
'intf': self.intf }
|
||||
defaults.update( params )
|
||||
if not cls:
|
||||
cls = self.link
|
||||
return cls( node1, node2, **defaults )
|
||||
|
||||
def configHosts( self ):
|
||||
"Configure a set of hosts."
|
||||
for host in self.hosts:
|
||||
info( host.name + ' ' )
|
||||
intf = host.defaultIntf()
|
||||
if intf:
|
||||
host.configDefault()
|
||||
else:
|
||||
# Don't configure nonexistent intf
|
||||
host.configDefault( ip=None, mac=None )
|
||||
host.configDefault( defaultRoute=host.defaultIntf() )
|
||||
# You're low priority, dude!
|
||||
# BL: do we want to do this here or not?
|
||||
# May not make sense if we have CPU lmiting...
|
||||
# quietRun( 'renice +18 -p ' + repr( host.pid ) )
|
||||
# This may not be the right place to do this, but
|
||||
# it needs to be done somewhere.
|
||||
host.cmd( 'ifconfig lo up' )
|
||||
info( '\n' )
|
||||
|
||||
def buildFromTopo( self, topo=None ):
|
||||
@@ -397,18 +273,10 @@ class Mininet( object ):
|
||||
|
||||
info( '*** Creating network\n' )
|
||||
|
||||
if not self.controllers and self.controller:
|
||||
if not self.controllers:
|
||||
# Add a default controller
|
||||
info( '*** Adding controller\n' )
|
||||
classes = self.controller
|
||||
if not isinstance( classes, list ):
|
||||
classes = [ classes ]
|
||||
for i, cls in enumerate( classes ):
|
||||
# Allow Controller objects because nobody understands partial()
|
||||
if isinstance( cls, Controller ):
|
||||
self.addController( cls )
|
||||
else:
|
||||
self.addController( 'c%d' % i, cls )
|
||||
self.addController( 'c0' )
|
||||
|
||||
info( '*** Adding hosts:\n' )
|
||||
for hostName in topo.hosts():
|
||||
@@ -417,32 +285,29 @@ class Mininet( object ):
|
||||
|
||||
info( '\n*** Adding switches:\n' )
|
||||
for switchName in topo.switches():
|
||||
# A bit ugly: add batch parameter if appropriate
|
||||
params = topo.nodeInfo( switchName)
|
||||
cls = params.get( 'cls', self.switch )
|
||||
if hasattr( cls, 'batchStartup' ):
|
||||
params.setdefault( 'batch', True )
|
||||
self.addSwitch( switchName, **params )
|
||||
self.addSwitch( switchName, **topo.nodeInfo( switchName) )
|
||||
info( switchName + ' ' )
|
||||
|
||||
info( '\n*** Adding links:\n' )
|
||||
for srcName, dstName, params in topo.links(
|
||||
sort=True, withInfo=True ):
|
||||
self.addLink( **params )
|
||||
info( '(%s, %s) ' % ( srcName, dstName ) )
|
||||
for srcName, dstName in topo.links(sort=True):
|
||||
src, dst = self.nameToNode[ srcName ], self.nameToNode[ dstName ]
|
||||
params = topo.linkInfo( srcName, dstName )
|
||||
srcPort, dstPort = topo.port( srcName, dstName )
|
||||
self.addLink( src, dst, srcPort, dstPort, **params )
|
||||
info( '(%s, %s) ' % ( src.name, dst.name ) )
|
||||
|
||||
info( '\n' )
|
||||
|
||||
def configureControlNetwork( self ):
|
||||
"Control net config hook: override in subclass"
|
||||
raise Exception( 'configureControlNetwork: '
|
||||
'should be overriden in subclass', self )
|
||||
'should be overriden in subclass', self )
|
||||
|
||||
def build( self ):
|
||||
"Build mininet."
|
||||
if self.topo:
|
||||
self.buildFromTopo( self.topo )
|
||||
if self.inNamespace:
|
||||
if ( self.inNamespace ):
|
||||
self.configureControlNetwork()
|
||||
info( '*** Configuring hosts\n' )
|
||||
self.configHosts()
|
||||
@@ -454,9 +319,6 @@ class Mininet( object ):
|
||||
|
||||
def startTerms( self ):
|
||||
"Start a terminal for each node."
|
||||
if 'DISPLAY' not in os.environ:
|
||||
error( "Error starting terms: Cannot connect to display\n" )
|
||||
return
|
||||
info( "*** Running terms on %s\n" % os.environ[ 'DISPLAY' ] )
|
||||
cleanUpScreens()
|
||||
self.terms += makeTerms( self.controllers, 'controller' )
|
||||
@@ -482,57 +344,43 @@ class Mininet( object ):
|
||||
self.build()
|
||||
info( '*** Starting controller\n' )
|
||||
for controller in self.controllers:
|
||||
info( controller.name + ' ')
|
||||
controller.start()
|
||||
info( '\n' )
|
||||
info( '*** Starting %s switches\n' % len( self.switches ) )
|
||||
for switch in self.switches:
|
||||
info( switch.name + ' ')
|
||||
switch.start( self.controllers )
|
||||
started = {}
|
||||
for swclass, switches in groupby(
|
||||
sorted( self.switches, key=type ), type ):
|
||||
switches = tuple( switches )
|
||||
if hasattr( swclass, 'batchStartup' ):
|
||||
success = swclass.batchStartup( switches )
|
||||
started.update( { s: s for s in success } )
|
||||
info( '\n' )
|
||||
if self.waitConn:
|
||||
self.waitConnected()
|
||||
info( '*** Starting system monitor\n' )
|
||||
if self.monitoring:
|
||||
m = self.monitoring
|
||||
m.monitors.append(Process(target=m.monitor_cpuacct,
|
||||
args=(self.hosts, '%s/cpuacct.txt' % m.output_dir)))
|
||||
m.start()
|
||||
info( 'Logging monitoring info in: %s\n' % m.output_dir )
|
||||
|
||||
def stop( self ):
|
||||
"Stop the controller(s), switches and hosts"
|
||||
info( '*** Stopping system monitor\n' )
|
||||
if self.monitoring:
|
||||
self.monitoring.stop()
|
||||
if self.terms:
|
||||
info( '*** Stopping %i terms\n' % len( self.terms ) )
|
||||
self.stopXterms()
|
||||
info( '*** Stopping %i hosts\n' % len( self.hosts ) )
|
||||
for host in self.hosts:
|
||||
info( host.name + ' ' )
|
||||
host.terminate()
|
||||
info( '\n' )
|
||||
info( '*** Stopping %i switches\n' % len( self.switches ) )
|
||||
for switch in self.switches:
|
||||
info( switch.name + ' ' )
|
||||
switch.stop()
|
||||
info( '\n' )
|
||||
info( '*** Stopping %i controllers\n' % len( self.controllers ) )
|
||||
for controller in self.controllers:
|
||||
info( controller.name + ' ' )
|
||||
controller.stop()
|
||||
info( '\n' )
|
||||
if self.terms:
|
||||
info( '*** Stopping %i terms\n' % len( self.terms ) )
|
||||
self.stopXterms()
|
||||
info( '*** Stopping %i links\n' % len( self.links ) )
|
||||
for link in self.links:
|
||||
info( '.' )
|
||||
link.stop()
|
||||
info( '\n' )
|
||||
info( '*** Stopping %i switches\n' % len( self.switches ) )
|
||||
stopped = {}
|
||||
for swclass, switches in groupby(
|
||||
sorted( self.switches, key=type ), type ):
|
||||
switches = tuple( switches )
|
||||
if hasattr( swclass, 'batchShutdown' ):
|
||||
success = swclass.batchShutdown( switches )
|
||||
stopped.update( { s: s for s in success } )
|
||||
for switch in self.switches:
|
||||
info( switch.name + ' ' )
|
||||
if switch not in stopped:
|
||||
switch.stop()
|
||||
switch.terminate()
|
||||
info( '\n' )
|
||||
info( '*** Stopping %i hosts\n' % len( self.hosts ) )
|
||||
for host in self.hosts:
|
||||
info( host.name + ' ' )
|
||||
host.terminate()
|
||||
info( '\n*** Done\n' )
|
||||
|
||||
def run( self, test, *args, **kwargs ):
|
||||
@@ -552,13 +400,13 @@ class Mininet( object ):
|
||||
if hosts is None:
|
||||
hosts = self.hosts
|
||||
poller = select.poll()
|
||||
h1 = hosts[ 0 ] # so we can call class method fdToNode
|
||||
Node = hosts[ 0 ] # so we can call class method fdToNode
|
||||
for host in hosts:
|
||||
poller.register( host.stdout )
|
||||
while True:
|
||||
ready = poller.poll( timeoutms )
|
||||
for fd, event in ready:
|
||||
host = h1.fdToNode( fd )
|
||||
host = Node.fdToNode( fd )
|
||||
if event & select.POLLIN:
|
||||
line = host.readline()
|
||||
if line is not None:
|
||||
@@ -575,20 +423,19 @@ class Mininet( object ):
|
||||
"Parse ping output and return packets sent, received."
|
||||
# Check for downed link
|
||||
if 'connect: Network is unreachable' in pingOutput:
|
||||
return 1, 0
|
||||
return (1, 0)
|
||||
r = r'(\d+) packets transmitted, (\d+) received'
|
||||
m = re.search( r, pingOutput )
|
||||
if m is None:
|
||||
if m == None:
|
||||
error( '*** Error: could not parse ping output: %s\n' %
|
||||
pingOutput )
|
||||
return 1, 0
|
||||
pingOutput )
|
||||
return (1, 0)
|
||||
sent, received = int( m.group( 1 ) ), int( m.group( 2 ) )
|
||||
return sent, received
|
||||
|
||||
def ping( self, hosts=None, timeout=None ):
|
||||
def ping( self, hosts=None ):
|
||||
"""Ping between all specified hosts.
|
||||
hosts: list of hosts
|
||||
timeout: time to wait for a response, as string
|
||||
returns: ploss packet loss percentage"""
|
||||
# should we check if running?
|
||||
packets = 0
|
||||
@@ -601,15 +448,8 @@ class Mininet( object ):
|
||||
output( '%s -> ' % node.name )
|
||||
for dest in hosts:
|
||||
if node != dest:
|
||||
opts = ''
|
||||
if timeout:
|
||||
opts = '-W %s' % timeout
|
||||
if dest.intfs:
|
||||
result = node.cmd( 'ping -c1 %s %s' %
|
||||
(opts, dest.IP()) )
|
||||
sent, received = self._parsePing( result )
|
||||
else:
|
||||
sent, received = 0, 0
|
||||
result = node.cmd( 'ping -c1 ' + dest.IP() )
|
||||
sent, received = self._parsePing( result )
|
||||
packets += sent
|
||||
if received > sent:
|
||||
error( '*** Error: received too many packets' )
|
||||
@@ -619,84 +459,15 @@ class Mininet( object ):
|
||||
lost += sent - received
|
||||
output( ( '%s ' % dest.name ) if received else 'X ' )
|
||||
output( '\n' )
|
||||
if packets > 0:
|
||||
ploss = 100.0 * lost / packets
|
||||
received = packets - lost
|
||||
output( "*** Results: %i%% dropped (%d/%d received)\n" %
|
||||
( ploss, received, packets ) )
|
||||
else:
|
||||
ploss = 0
|
||||
output( "*** Warning: No packets sent\n" )
|
||||
ploss = 100 * lost / packets
|
||||
output( "*** Results: %i%% dropped (%d/%d lost)\n" %
|
||||
( ploss, lost, packets ) )
|
||||
return ploss
|
||||
|
||||
@staticmethod
|
||||
def _parsePingFull( pingOutput ):
|
||||
"Parse ping output and return all data."
|
||||
errorTuple = (1, 0, 0, 0, 0, 0)
|
||||
# Check for downed link
|
||||
r = r'[uU]nreachable'
|
||||
m = re.search( r, pingOutput )
|
||||
if m is not None:
|
||||
return errorTuple
|
||||
r = r'(\d+) packets transmitted, (\d+) received'
|
||||
m = re.search( r, pingOutput )
|
||||
if m is None:
|
||||
error( '*** Error: could not parse ping output: %s\n' %
|
||||
pingOutput )
|
||||
return errorTuple
|
||||
sent, received = int( m.group( 1 ) ), int( m.group( 2 ) )
|
||||
r = r'rtt min/avg/max/mdev = '
|
||||
r += r'(\d+\.\d+)/(\d+\.\d+)/(\d+\.\d+)/(\d+\.\d+) ms'
|
||||
m = re.search( r, pingOutput )
|
||||
if m is None:
|
||||
if received == 0:
|
||||
return errorTuple
|
||||
error( '*** Error: could not parse ping output: %s\n' %
|
||||
pingOutput )
|
||||
return errorTuple
|
||||
rttmin = float( m.group( 1 ) )
|
||||
rttavg = float( m.group( 2 ) )
|
||||
rttmax = float( m.group( 3 ) )
|
||||
rttdev = float( m.group( 4 ) )
|
||||
return sent, received, rttmin, rttavg, rttmax, rttdev
|
||||
|
||||
def pingFull( self, hosts=None, timeout=None ):
|
||||
"""Ping between all specified hosts and return all data.
|
||||
hosts: list of hosts
|
||||
timeout: time to wait for a response, as string
|
||||
returns: all ping data; see function body."""
|
||||
# should we check if running?
|
||||
# Each value is a tuple: (src, dsd, [all ping outputs])
|
||||
all_outputs = []
|
||||
if not hosts:
|
||||
hosts = self.hosts
|
||||
output( '*** Ping: testing ping reachability\n' )
|
||||
for node in hosts:
|
||||
output( '%s -> ' % node.name )
|
||||
for dest in hosts:
|
||||
if node != dest:
|
||||
opts = ''
|
||||
if timeout:
|
||||
opts = '-W %s' % timeout
|
||||
result = node.cmd( 'ping -c1 %s %s' % (opts, dest.IP()) )
|
||||
outputs = self._parsePingFull( result )
|
||||
sent, received, rttmin, rttavg, rttmax, rttdev = outputs
|
||||
all_outputs.append( (node, dest, outputs) )
|
||||
output( ( '%s ' % dest.name ) if received else 'X ' )
|
||||
output( '\n' )
|
||||
output( "*** Results: \n" )
|
||||
for outputs in all_outputs:
|
||||
src, dest, ping_outputs = outputs
|
||||
sent, received, rttmin, rttavg, rttmax, rttdev = ping_outputs
|
||||
output( " %s->%s: %s/%s, " % (src, dest, sent, received ) )
|
||||
output( "rtt min/avg/max/mdev %0.3f/%0.3f/%0.3f/%0.3f ms\n" %
|
||||
(rttmin, rttavg, rttmax, rttdev) )
|
||||
return all_outputs
|
||||
|
||||
def pingAll( self, timeout=None ):
|
||||
def pingAll( self ):
|
||||
"""Ping between all hosts.
|
||||
returns: ploss packet loss percentage"""
|
||||
return self.ping( timeout=timeout )
|
||||
return self.ping()
|
||||
|
||||
def pingPair( self ):
|
||||
"""Ping between first two hosts, useful for testing.
|
||||
@@ -704,17 +475,6 @@ class Mininet( object ):
|
||||
hosts = [ self.hosts[ 0 ], self.hosts[ 1 ] ]
|
||||
return self.ping( hosts=hosts )
|
||||
|
||||
def pingAllFull( self ):
|
||||
"""Ping between all hosts.
|
||||
returns: ploss packet loss percentage"""
|
||||
return self.pingFull()
|
||||
|
||||
def pingPairFull( self ):
|
||||
"""Ping between first two hosts, useful for testing.
|
||||
returns: ploss packet loss percentage"""
|
||||
hosts = [ self.hosts[ 0 ], self.hosts[ 1 ] ]
|
||||
return self.pingFull( hosts=hosts )
|
||||
|
||||
@staticmethod
|
||||
def _parseIperf( iperfOutput ):
|
||||
"""Parse iperf output and return bandwidth.
|
||||
@@ -731,44 +491,43 @@ class Mininet( object ):
|
||||
|
||||
# XXX This should be cleaned up
|
||||
|
||||
def iperf( self, hosts=None, l4Type='TCP', udpBw='10M', fmt=None,
|
||||
seconds=5, port=5001):
|
||||
def iperf( self, hosts=None, l4Type='TCP', udpBw='10M' ):
|
||||
"""Run iperf between two hosts.
|
||||
hosts: list of hosts; if None, uses first and last hosts
|
||||
hosts: list of hosts; if None, uses opposite hosts
|
||||
l4Type: string, one of [ TCP, UDP ]
|
||||
udpBw: bandwidth target for UDP test
|
||||
fmt: iperf format argument if any
|
||||
seconds: iperf time to transmit
|
||||
port: iperf port
|
||||
returns: two-element array of [ server, client ] speeds
|
||||
note: send() is buffered, so client rate can be much higher than
|
||||
the actual transmission rate; on an unloaded system, server
|
||||
rate should be much closer to the actual receive rate"""
|
||||
hosts = hosts or [ self.hosts[ 0 ], self.hosts[ -1 ] ]
|
||||
assert len( hosts ) == 2
|
||||
returns: results two-element array of server and client speeds"""
|
||||
if not quietRun( 'which telnet' ):
|
||||
error( 'Cannot find telnet in $PATH - required for iperf test' )
|
||||
return
|
||||
if not hosts:
|
||||
hosts = [ self.hosts[ 0 ], self.hosts[ -1 ] ]
|
||||
else:
|
||||
assert len( hosts ) == 2
|
||||
client, server = hosts
|
||||
output( '*** Iperf: testing', l4Type, 'bandwidth between',
|
||||
client, 'and', server, '\n' )
|
||||
output( '*** Iperf: testing ' + l4Type + ' bandwidth between ' )
|
||||
output( "%s and %s\n" % ( client.name, server.name ) )
|
||||
server.cmd( 'killall -9 iperf' )
|
||||
iperfArgs = 'iperf -p %d ' % port
|
||||
iperfArgs = 'iperf '
|
||||
bwArgs = ''
|
||||
if l4Type == 'UDP':
|
||||
iperfArgs += '-u '
|
||||
bwArgs = '-b ' + udpBw + ' '
|
||||
elif l4Type != 'TCP':
|
||||
raise Exception( 'Unexpected l4 type: %s' % l4Type )
|
||||
if fmt:
|
||||
iperfArgs += '-f %s ' % fmt
|
||||
server.sendCmd( iperfArgs + '-s' )
|
||||
server.sendCmd( iperfArgs + '-s', printPid=True )
|
||||
servout = ''
|
||||
while server.lastPid is None:
|
||||
servout += server.monitor()
|
||||
if l4Type == 'TCP':
|
||||
if not waitListening( client, server.IP(), port ):
|
||||
raise Exception( 'Could not connect to iperf on port %d'
|
||||
% port )
|
||||
cliout = client.cmd( iperfArgs + '-t %d -c ' % seconds +
|
||||
server.IP() + ' ' + bwArgs )
|
||||
while 'Connected' not in client.cmd(
|
||||
'sh -c "echo A | telnet -e A %s 5001"' % server.IP()):
|
||||
output('waiting for iperf to start up...')
|
||||
sleep(.5)
|
||||
cliout = client.cmd( iperfArgs + '-t 5 -c ' + server.IP() + ' ' +
|
||||
bwArgs )
|
||||
debug( 'Client output: %s\n' % cliout )
|
||||
server.sendInt()
|
||||
servout = server.waitOutput()
|
||||
servout += server.waitOutput()
|
||||
debug( 'Server output: %s\n' % servout )
|
||||
result = [ self._parseIperf( servout ), self._parseIperf( cliout ) ]
|
||||
if l4Type == 'UDP':
|
||||
@@ -776,52 +535,6 @@ class Mininet( object ):
|
||||
output( '*** Results: %s\n' % result )
|
||||
return result
|
||||
|
||||
def runCpuLimitTest( self, cpu, duration=5 ):
|
||||
"""run CPU limit test with 'while true' processes.
|
||||
cpu: desired CPU fraction of each host
|
||||
duration: test duration in seconds (integer)
|
||||
returns a single list of measured CPU fractions as floats.
|
||||
"""
|
||||
cores = int( quietRun( 'nproc' ) )
|
||||
pct = cpu * 100
|
||||
info( '*** Testing CPU %.0f%% bandwidth limit\n' % pct )
|
||||
hosts = self.hosts
|
||||
cores = int( quietRun( 'nproc' ) )
|
||||
# number of processes to run a while loop on per host
|
||||
num_procs = int( ceil( cores * cpu ) )
|
||||
pids = {}
|
||||
for h in hosts:
|
||||
pids[ h ] = []
|
||||
for _core in range( num_procs ):
|
||||
h.cmd( 'while true; do a=1; done &' )
|
||||
pids[ h ].append( h.cmd( 'echo $!' ).strip() )
|
||||
outputs = {}
|
||||
time = {}
|
||||
# get the initial cpu time for each host
|
||||
for host in hosts:
|
||||
outputs[ host ] = []
|
||||
with open( '/sys/fs/cgroup/cpuacct/%s/cpuacct.usage' %
|
||||
host, 'r' ) as f:
|
||||
time[ host ] = float( f.read() )
|
||||
for _ in range( duration ):
|
||||
sleep( 1 )
|
||||
for host in hosts:
|
||||
with open( '/sys/fs/cgroup/cpuacct/%s/cpuacct.usage' %
|
||||
host, 'r' ) as f:
|
||||
readTime = float( f.read() )
|
||||
outputs[ host ].append( ( ( readTime - time[ host ] )
|
||||
/ 1000000000 ) / cores * 100 )
|
||||
time[ host ] = readTime
|
||||
for h, pids in pids.items():
|
||||
for pid in pids:
|
||||
h.cmd( 'kill -9 %s' % pid )
|
||||
cpu_fractions = []
|
||||
for _host, outputs in outputs.items():
|
||||
for pct in outputs:
|
||||
cpu_fractions.append( pct )
|
||||
output( '*** Results: %s\n' % cpu_fractions )
|
||||
return cpu_fractions
|
||||
|
||||
# BL: I think this can be rewritten now that we have
|
||||
# a real link class.
|
||||
def configLinkStatus( self, src, dst, status ):
|
||||
@@ -834,9 +547,9 @@ class Mininet( object ):
|
||||
elif dst not in self.nameToNode:
|
||||
error( 'dst not in network: %s\n' % dst )
|
||||
else:
|
||||
if isinstance( src, basestring ):
|
||||
if type( src ) is str:
|
||||
src = self.nameToNode[ src ]
|
||||
if isinstance( dst, basestring ):
|
||||
if type( dst ) is str:
|
||||
dst = self.nameToNode[ dst ]
|
||||
connections = src.connectionsTo( dst )
|
||||
if len( connections ) == 0:
|
||||
@@ -863,7 +576,12 @@ class Mininet( object ):
|
||||
"Initialize Mininet"
|
||||
if cls.inited:
|
||||
return
|
||||
ensureRoot()
|
||||
if os.getuid() != 0:
|
||||
# Note: this script must be run as root
|
||||
# Probably we should only sudo when we need
|
||||
# to as per Big Switch's patch
|
||||
print "*** Mininet must run as root."
|
||||
exit( 1 )
|
||||
fixLimits()
|
||||
cls.inited = True
|
||||
|
||||
@@ -904,7 +622,7 @@ class MininetWithControlNet( Mininet ):
|
||||
# in the control network location.
|
||||
|
||||
def configureRoutedControlNetwork( self, ip='192.168.123.1',
|
||||
prefixLen=16 ):
|
||||
prefixLen=16 ):
|
||||
"""Configure a routed control network on controller and switches.
|
||||
For use with the user datapath only right now."""
|
||||
controller = self.controllers[ 0 ]
|
||||
|
||||
+236
-760
File diff suppressed because it is too large
Load Diff
@@ -1,158 +0,0 @@
|
||||
"""
|
||||
Node Library for Mininet
|
||||
|
||||
This contains additional Node types which you may find to be useful.
|
||||
"""
|
||||
|
||||
from mininet.node import Node, Switch
|
||||
from mininet.log import info, warn
|
||||
from mininet.moduledeps import pathCheck
|
||||
from mininet.util import quietRun
|
||||
|
||||
import re
|
||||
|
||||
class LinuxBridge( Switch ):
|
||||
"Linux Bridge (with optional spanning tree)"
|
||||
|
||||
nextPrio = 100 # next bridge priority for spanning tree
|
||||
|
||||
def __init__( self, name, stp=False, prio=None, **kwargs ):
|
||||
"""stp: use spanning tree protocol? (default False)
|
||||
prio: optional explicit bridge priority for STP"""
|
||||
self.stp = stp
|
||||
if prio:
|
||||
self.prio = prio
|
||||
else:
|
||||
self.prio = LinuxBridge.nextPrio
|
||||
LinuxBridge.nextPrio += 1
|
||||
Switch.__init__( self, name, **kwargs )
|
||||
|
||||
def connected( self ):
|
||||
"Are we forwarding yet?"
|
||||
if self.stp:
|
||||
return 'forwarding' in self.cmd( 'brctl showstp', self )
|
||||
else:
|
||||
return True
|
||||
|
||||
def start( self, _controllers ):
|
||||
"Start Linux bridge"
|
||||
self.cmd( 'ifconfig', self, 'down' )
|
||||
self.cmd( 'brctl delbr', self )
|
||||
self.cmd( 'brctl addbr', self )
|
||||
if self.stp:
|
||||
self.cmd( 'brctl setbridgeprio', self.prio )
|
||||
self.cmd( 'brctl stp', self, 'on' )
|
||||
for i in self.intfList():
|
||||
if self.name in i.name:
|
||||
self.cmd( 'brctl addif', self, i )
|
||||
self.cmd( 'ifconfig', self, 'up' )
|
||||
|
||||
def stop( self, deleteIntfs=True ):
|
||||
"""Stop Linux bridge
|
||||
deleteIntfs: delete interfaces? (True)"""
|
||||
self.cmd( 'ifconfig', self, 'down' )
|
||||
self.cmd( 'brctl delbr', self )
|
||||
super( LinuxBridge, self ).stop( deleteIntfs )
|
||||
|
||||
def dpctl( self, *args ):
|
||||
"Run brctl command"
|
||||
return self.cmd( 'brctl', *args )
|
||||
|
||||
@classmethod
|
||||
def setup( cls ):
|
||||
"Check dependencies and warn about firewalling"
|
||||
pathCheck( 'brctl', moduleName='bridge-utils' )
|
||||
# Disable Linux bridge firewalling so that traffic can flow!
|
||||
for table in 'arp', 'ip', 'ip6':
|
||||
cmd = 'sysctl net.bridge.bridge-nf-call-%stables' % table
|
||||
out = quietRun( cmd ).strip()
|
||||
if out.endswith( '1' ):
|
||||
warn( 'Warning: Linux bridge may not work with', out, '\n' )
|
||||
|
||||
|
||||
class NAT( Node ):
|
||||
"NAT: Provides connectivity to external network"
|
||||
|
||||
def __init__( self, name, inetIntf=None, subnet='10.0/8',
|
||||
localIntf=None, flush=False, **params):
|
||||
"""Start NAT/forwarding between Mininet and external network
|
||||
inetIntf: interface for internet access
|
||||
subnet: Mininet subnet (default 10.0/8)
|
||||
flush: flush iptables before installing NAT rules"""
|
||||
super( NAT, self ).__init__( name, **params )
|
||||
|
||||
self.inetIntf = inetIntf if inetIntf else self.getGatewayIntf()
|
||||
self.subnet = subnet
|
||||
self.localIntf = localIntf
|
||||
self.flush = flush
|
||||
|
||||
def config( self, **params ):
|
||||
"""Configure the NAT and iptables"""
|
||||
super( NAT, self).config( **params )
|
||||
|
||||
if not self.localIntf:
|
||||
self.localIntf = self.defaultIntf()
|
||||
|
||||
self.cmd( 'sysctl net.ipv4.ip_forward=0' )
|
||||
|
||||
if self.flush:
|
||||
self.cmd( 'iptables -F' )
|
||||
self.cmd( 'iptables -t nat -F' )
|
||||
# Create default entries for unmatched traffic
|
||||
self.cmd( 'iptables -P INPUT ACCEPT' )
|
||||
self.cmd( 'iptables -P OUTPUT ACCEPT' )
|
||||
self.cmd( 'iptables -P FORWARD DROP' )
|
||||
|
||||
# Install NAT rules
|
||||
self.cmd( 'iptables -I FORWARD',
|
||||
'-i', self.localIntf, '-d', self.subnet, '-j DROP' )
|
||||
self.cmd( 'iptables -A FORWARD',
|
||||
'-i', self.localIntf, '-s', self.subnet, '-j ACCEPT' )
|
||||
self.cmd( 'iptables -A FORWARD',
|
||||
'-i', self.inetIntf, '-d', self.subnet, '-j ACCEPT' )
|
||||
self.cmd( 'iptables -t nat -A POSTROUTING',
|
||||
'-o', self.inetIntf, '-s', self.subnet, '-j MASQUERADE' )
|
||||
|
||||
# Instruct the kernel to perform forwarding
|
||||
self.cmd( 'sysctl net.ipv4.ip_forward=1' )
|
||||
|
||||
# Prevent network-manager from messing with our interface
|
||||
# by specifying manual configuration in /etc/network/interfaces
|
||||
intf = self.localIntf
|
||||
cfile = '/etc/network/interfaces'
|
||||
line = '\niface %s inet manual\n' % intf
|
||||
config = open( cfile ).read()
|
||||
if ( line ) not in config:
|
||||
info( '*** Adding "' + line.strip() + '" to ' + cfile + '\n' )
|
||||
with open( cfile, 'a' ) as f:
|
||||
f.write( line )
|
||||
# Probably need to restart network-manager to be safe -
|
||||
# hopefully this won't disconnect you
|
||||
self.cmd( 'service network-manager restart' )
|
||||
|
||||
def getGatewayIntf( self, fallback='eth0' ):
|
||||
"""Return gateway interface name
|
||||
fallback: default device to fall back to"""
|
||||
routes = self.cmd( 'ip route show' )
|
||||
match = re.search( r'default via \S+ dev (\S+)', routes )
|
||||
if match:
|
||||
return match.group( 1 )
|
||||
else:
|
||||
warn( 'There is no default route set.',
|
||||
'Using', fallback, 'as gateway interface...\n' )
|
||||
return fallback
|
||||
|
||||
def terminate( self ):
|
||||
"Stop NAT/forwarding between Mininet and external network"
|
||||
# Remote NAT rules
|
||||
self.cmd( 'iptables -D FORWARD',
|
||||
'-i', self.localIntf, '-d', self.subnet, '-j DROP' )
|
||||
self.cmd( 'iptables -D FORWARD',
|
||||
'-i', self.localIntf, '-s', self.subnet, '-j ACCEPT' )
|
||||
self.cmd( 'iptables -D FORWARD',
|
||||
'-i', self.inetIntf, '-d', self.subnet, '-j ACCEPT' )
|
||||
self.cmd( 'iptables -t nat -D POSTROUTING',
|
||||
'-o', self.inetIntf, '-s', self.subnet, '-j MASQUERADE' )
|
||||
# Instruct the kernel to stop forwarding
|
||||
self.cmd( 'sysctl net.ipv4.ip_forward=0' )
|
||||
super( NAT, self ).terminate()
|
||||
+33
-54
@@ -1,81 +1,60 @@
|
||||
"""
|
||||
Terminal creation and cleanup.
|
||||
Utility functions to run a terminal (connected via socat(1)) on each host.
|
||||
Utility functions to run a term (connected via screen(1)) on each host.
|
||||
|
||||
Requires socat(1) and xterm(1).
|
||||
Requires GNU screen(1) and xterm(1).
|
||||
Optionally uses gnome-terminal.
|
||||
"""
|
||||
|
||||
from os import environ
|
||||
import re
|
||||
from subprocess import Popen
|
||||
|
||||
from mininet.log import error
|
||||
from mininet.util import quietRun, errRun
|
||||
from mininet.util import quietRun
|
||||
|
||||
def tunnelX11( node, display=None):
|
||||
"""Create an X11 tunnel from node:6000 to the root host
|
||||
display: display on root host (optional)
|
||||
returns: node $DISPLAY, Popen object for tunnel"""
|
||||
if display is None and 'DISPLAY' in environ:
|
||||
display = environ[ 'DISPLAY' ]
|
||||
if display is None:
|
||||
error( "Error: Cannot connect to display\n" )
|
||||
return None, None
|
||||
host, screen = display.split( ':' )
|
||||
# Unix sockets should work
|
||||
if not host or host == 'unix':
|
||||
# GDM3 doesn't put credentials in .Xauthority,
|
||||
# so allow root to just connect
|
||||
quietRun( 'xhost +si:localuser:root' )
|
||||
return display, None
|
||||
else:
|
||||
# Create a tunnel for the TCP connection
|
||||
port = 6000 + int( float( screen ) )
|
||||
connection = r'TCP\:%s\:%s' % ( host, port )
|
||||
cmd = [ "socat", "TCP-LISTEN:%d,fork,reuseaddr" % port,
|
||||
"EXEC:'mnexec -a 1 socat STDIO %s'" % connection ]
|
||||
return 'localhost:' + screen, node.popen( cmd )
|
||||
def quoteArg( arg ):
|
||||
"Quote an argument if it contains spaces."
|
||||
return repr( arg ) if ' ' in arg else arg
|
||||
|
||||
def makeTerm( node, title='Node', term='xterm', display=None, cmd='bash'):
|
||||
"""Create an X11 tunnel to the node and start up a terminal.
|
||||
def makeTerm( node, title='Node', term='xterm' ):
|
||||
"""Run screen on a node, and hook up a terminal.
|
||||
node: Node object
|
||||
title: base title
|
||||
term: 'xterm' or 'gterm'
|
||||
returns: two Popen objects, tunnel and terminal"""
|
||||
title = '"%s: %s"' % ( title, node.name )
|
||||
returns: process created"""
|
||||
title += ': ' + node.name
|
||||
if not node.inNamespace:
|
||||
title += ' (root)'
|
||||
cmds = {
|
||||
'xterm': [ 'xterm', '-title', title, '-display' ],
|
||||
'gterm': [ 'gnome-terminal', '--title', title, '--display' ]
|
||||
'xterm': [ 'xterm', '-title', title, '-e' ],
|
||||
'gterm': [ 'gnome-terminal', '--title', title, '-e' ]
|
||||
}
|
||||
if term not in cmds:
|
||||
error( 'invalid terminal type: %s' % term )
|
||||
return
|
||||
display, tunnel = tunnelX11( node, display )
|
||||
if display is None:
|
||||
return []
|
||||
term = node.popen( cmds[ term ] +
|
||||
[ display, '-e', 'env TERM=ansi %s' % cmd ] )
|
||||
return [ tunnel, term ] if tunnel else [ term ]
|
||||
|
||||
def runX11( node, cmd ):
|
||||
"Run an X11 client on a node"
|
||||
_display, tunnel = tunnelX11( node )
|
||||
if _display is None:
|
||||
return []
|
||||
popen = node.popen( cmd )
|
||||
return [ tunnel, popen ]
|
||||
if not node.execed:
|
||||
node.cmd( 'screen -dmS ' + 'mininet.' + node.name)
|
||||
args = [ 'screen', '-D', '-RR', '-S', 'mininet.' + node.name ]
|
||||
else:
|
||||
args = [ 'sh', '-c', 'exec tail -f /tmp/' + node.name + '*.log' ]
|
||||
if term == 'gterm':
|
||||
# Compress these for gnome-terminal, which expects one token
|
||||
# to follow the -e option
|
||||
args = [ ' '.join( [ quoteArg( arg ) for arg in args ] ) ]
|
||||
return Popen( cmds[ term ] + args )
|
||||
|
||||
def cleanUpScreens():
|
||||
"Remove moldy socat X11 tunnels."
|
||||
errRun( "pkill -9 -f mnexec.*socat" )
|
||||
"Remove moldy old screen sessions."
|
||||
r = r'(\d+\.mininet\.[hsc]\d+)'
|
||||
output = quietRun( 'screen -ls' ).split( '\n' )
|
||||
for line in output:
|
||||
m = re.search( r, line )
|
||||
if m:
|
||||
quietRun( 'screen -S ' + m.group( 1 ) + ' -X quit' )
|
||||
|
||||
def makeTerms( nodes, title='Node', term='xterm' ):
|
||||
"""Create terminals.
|
||||
nodes: list of Node objects
|
||||
title: base title for each
|
||||
returns: list of created tunnel/terminal processes"""
|
||||
terms = []
|
||||
for node in nodes:
|
||||
terms += makeTerm( node, title, term )
|
||||
return terms
|
||||
returns: list of created terminal processes"""
|
||||
return [ makeTerm( node, title, term ) for node in nodes ]
|
||||
|
||||
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user