/[sysadmin-cookbook]/recepies/lxc/lxc-watchdog.sh
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 183 by dpavlin, Tue Mar 16 19:59:41 2010 UTC revision 186 by dpavlin, Tue Mar 16 20:53:59 2010 UTC
# Line 1  Line 1 
1  #!/bin/sh  #! /bin/sh
2    ### BEGIN INIT INFO
3    # Provides:          lxc-watchdog
4    # Required-Start:    $remote_fs $named $network $time
5    # Required-Stop:     $remote_fs $named $network
6    # Required-Start:    
7    # Required-Stop:    
8    # Default-Start:     2 3 4 5
9    # Default-Stop:      0 1 6
10    # Short-Description: Manage Linux Containers startup/shutdown
11    # Description:       Uses clever inotify hack to monitor container's
12    #                    halt/reboot events watching /var/run/utmp
13    ### END INIT INFO
14    
15  # lxc-watchdog.sh  # Author: Dobrica Pavlinusic <dpavlin@rot13.org>
 #  
 # Dobrica Pavlinusic <dpavlin@rot13.org> 2010-03-15  
 #  
 # this script can be used to start/stop Linux containers  
 # using clever inotify hack to monitor halt/reboot from  
 # Tony Risinger posted to lxc-users mailing list  
16  #  #
17    # based on Tony Risinger post to lxc-users mailing list
18  # http://www.mail-archive.com/lxc-users@lists.sourceforge.net/msg00074.html  # http://www.mail-archive.com/lxc-users@lists.sourceforge.net/msg00074.html
19    
20    
# Line 94  lxc_start() { Line 101  lxc_start() {
101                  lxc-start -n $name -o /tmp/${name}.log -d                  lxc-start -n $name -o /tmp/${name}.log -d
102                  lxc-wait  -n $name -s RUNNING                  lxc-wait  -n $name -s RUNNING
103                  lxc-info  -n $name                  lxc-info  -n $name
104                  echo $name > /var/lib/lxc/${name}/on_boot                  test -f /var/lib/lxc/${name}/on_boot || echo $name > /var/lib/lxc/${name}/on_boot
105          fi          fi
106  }  }
107    
# Line 160  start) Line 167  start)
167          setup_inittab $1 ::power      "p0::powerfail:/sbin/init 0"          setup_inittab $1 ::power      "p0::powerfail:/sbin/init 0"
168          setup_inittab $1 ::ctrlaltdel "p6::ctrlaltdel:/sbin/init 6"          setup_inittab $1 ::ctrlaltdel "p6::ctrlaltdel:/sbin/init 6"
169          lxc_start $1          lxc_start $1
170          ( nohup $0 watchdog $1 >> /tmp/$1.log 2>/dev/null ) &          # give container 5 seconds to start more than one process
171            ( sleep 5 ; nohup $0 watchdog $1 >> /tmp/$1.log 2>/dev/null ) &
172          ;;          ;;
173  stop|halt)  stop|halt)
174          lxc_exists $1          lxc_exists $1
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