lantz
f0c726a42f
This helps with virtualenv although it can open up another security hole if you end up using an unexpected python interpreter. Overall it seems to make sense to err on the side of usability but it's good to be aware of security. However, for the remaining utility scripts that require python 2, we explicitly note this with #!/usr/bin/python2.
69 lines
2.3 KiB
Python
Executable File
69 lines
2.3 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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bind.py: Bind mount example
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This creates hosts with private directories that the user specifies.
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These hosts may have persistent directories that will be available
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across multiple mininet session, or temporary directories that will
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only last for one mininet session. To specify a persistent
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directory, add a tuple to a list of private directories:
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[ ( 'directory to be mounted on', 'directory to be mounted' ) ]
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String expansion may be used to create a directory template for
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each host. To do this, add a %(name)s in place of the host name
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when creating your list of directories:
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[ ( '/var/run', '/tmp/%(name)s/var/run' ) ]
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If no persistent directory is specified, the directories will default
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to temporary private directories. To do this, simply create a list of
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directories to be made private. A tmpfs will then be mounted on them.
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You may use both temporary and persistent directories at the same
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time. In the following privateDirs string, each host will have a
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persistent directory in the root filesystem at
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"/tmp/(hostname)/var/run" mounted on "/var/run". Each host will also
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have a temporary private directory mounted on "/var/log".
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[ ( '/var/run', '/tmp/%(name)s/var/run' ), '/var/log' ]
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This example has both persistent directories mounted on '/var/log'
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and '/var/run'. It also has a temporary private directory mounted
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on '/var/mn'
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"""
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from functools import partial
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from mininet.net import Mininet
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from mininet.node import Host
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from mininet.cli import CLI
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from mininet.topo import SingleSwitchTopo
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from mininet.log import setLogLevel, info
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# Sample usage
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def testHostWithPrivateDirs():
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"Test bind mounts"
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topo = SingleSwitchTopo( 10 )
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privateDirs = [ ( '/var/log', '/tmp/%(name)s/var/log' ),
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( '/var/run', '/tmp/%(name)s/var/run' ),
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'/var/mn' ]
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host = partial( Host,
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privateDirs=privateDirs )
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net = Mininet( topo=topo, host=host, waitConnected=True )
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net.start()
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directories = [ directory[ 0 ] if isinstance( directory, tuple )
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else directory for directory in privateDirs ]
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info( 'Private Directories:', directories, '\n' )
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CLI( net )
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net.stop()
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if __name__ == '__main__':
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setLogLevel( 'info' )
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testHostWithPrivateDirs()
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info( 'Done.\n')
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