Bob Lantz
ee15ce2243
Although we could use print() from __future__, this messes up scripts which use examples as modules. The simple, if not nicest for 2.7, solution is to use info(), output() and other mininet.log functions. The disadvantage is that we may have to adjust things if we change info() to add automatic newlines, but we can burn that bridge in Mininet 3.x.
47 lines
1.1 KiB
Python
Executable File
47 lines
1.1 KiB
Python
Executable File
#!/usr/bin/python
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"This example doesn't use OpenFlow, but attempts to run sshd in a namespace."
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import sys
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from mininet.node import Host
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from mininet.util import ensureRoot, waitListening
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from mininet.log import info, warn, output
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ensureRoot()
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timeout = 5
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info( "*** Creating nodes\n" )
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h1 = Host( 'h1' )
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root = Host( 'root', inNamespace=False )
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info( "*** Creating link\n" )
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h1.linkTo( root )
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info( h1 )
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info( "*** Configuring nodes\n" )
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h1.setIP( '10.0.0.1', 8 )
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root.setIP( '10.0.0.2', 8 )
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info( "*** Creating banner file\n" )
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f = open( '/tmp/%s.banner' % h1.name, 'w' )
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f.write( 'Welcome to %s at %s\n' % ( h1.name, h1.IP() ) )
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f.close()
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info( "*** Running sshd\n" )
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cmd = '/usr/sbin/sshd -o UseDNS=no -u0 -o "Banner /tmp/%s.banner"' % h1.name
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# add arguments from the command line
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if len( sys.argv ) > 1:
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cmd += ' ' + ' '.join( sys.argv[ 1: ] )
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h1.cmd( cmd )
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listening = waitListening( server=h1, port=22, timeout=timeout )
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if listening:
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output( "*** You may now ssh into", h1.name, "at", h1.IP(), '\n' )
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else:
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warn( "*** Warning: after %s seconds, %s is not listening on port 22"
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% ( timeout, h1.name ), '\n' )
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