mininet / bin / mn_clean.py @ 60d9ead6
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1 | 8f20b95d | Brandon Heller | #!/usr/bin/env python
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2 | """Mininet Cleanup
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3 |
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4 | @author Bob Lantz (rlantz@cs.stanford.edu)
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5 | ea420ee2 | Bob Lantz |
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6 | Unfortunately, Mininet and OpenFlow don't always clean up
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7 | properly after themselves. Until they do (or until cleanup
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8 | functionality is integrated into the python code), this
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9 | script may be used to get rid of unwanted garbage. It may
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10 | also get rid of 'false positives', but hopefully nothing
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11 | irreplaceable!
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12 | """
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13 | |||
14 | from subprocess import Popen, PIPE |
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15 | import re |
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16 | |||
17 | 220890a0 | Brandon Heller | from mininet.util import quietRun |
18 | 8a034f4f | Brandon Heller | from mininet.xterm import cleanUpScreens |
19 | ede34b6a | Brandon Heller | |
20 | ea420ee2 | Bob Lantz | def sh( cmd ): |
21 | "Print a command and send it to the shell"
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22 | print cmd
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23 | return Popen( [ '/bin/sh', '-c', cmd ], |
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24 | stdout=PIPE ).communicate()[ 0 ]
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25 | |||
26 | |||
27 | def cleanup(): |
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28 | 1417fe72 | Bob Lantz | """Clean up junk which might be left over from old runs;
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29 | do fast stuff before slow dp and link removal!"""
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30 | |||
31 | ea420ee2 | Bob Lantz | print "*** Removing excess controllers/ofprotocols/ofdatapaths/pings/noxes" |
32 | 1417fe72 | Bob Lantz | zombies = 'controller ofprotocol ofdatapath ping nox_core lt-nox_core '
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33 | zombies += 'udpbwtest'
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34 | ea420ee2 | Bob Lantz | # Note: real zombie processes can't actually be killed, since they
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35 | # are already (un)dead. Then again,
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36 | # you can't connect to them either, so they're mostly harmless.
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37 | sh( 'killall -9 ' + zombies + ' 2> /dev/null' ) |
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38 | |||
39 | print "*** Removing junk from /tmp" |
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40 | sh( 'rm -f /tmp/vconn* /tmp/vlogs* /tmp/*.out /tmp/*.log' )
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41 | |||
42 | print "*** Removing old screen sessions" |
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43 | cleanUpScreens() |
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44 | |||
45 | 1417fe72 | Bob Lantz | print "*** Removing excess kernel datapaths" |
46 | dps = sh( "ps ax | egrep -o 'dp[0-9]+' | sed 's/dp/nl:/'" ).split( '\n') |
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47 | for dp in dps: |
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48 | if dp != '': sh( 'dpctl deldp ' + dp ) |
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49 | |||
50 | print "*** Removing all links of the pattern foo-ethX" |
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51 | links = sh( "ip link show | egrep -o '(\w+-eth\w+)'" ).split( '\n' ) |
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52 | for link in links: |
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53 | if link != '': sh( "ip link del " + link ) |
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54 | |||
55 | ea420ee2 | Bob Lantz | print "*** Cleanup complete." |
56 | |||
57 | if __name__ == "__main__": |
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58 | cleanup() |