/[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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Diff of /recepies/lxc/lxc-watchdog.sh

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revision 245 by dpavlin, Tue Mar 29 18:02:44 2011 UTC revision 272 by dpavlin, Fri Sep 9 18:27:11 2011 UTC
# Line 54  lxc_ip() { Line 54  lxc_ip() {
54  }  }
55    
56  lxc_status() {  lxc_status() {
57          ( find /var/lib/lxc/ -name "config" | cut -d/ -f5 | sort -u | xargs -i lxc-info -n {} | sed "s/'//g" | while read name is status ; do          ( find /var/lib/lxc/ -name "config" | cut -d/ -f5 | sort -u | while read name ; do
58                    status=`lxc-info -n $name 2>/dev/null | grep state: | cut -d: -f2`     # 0.7.5
59                    test -z "$status" && status=`lxc-info -n $name | sed -e 's/^.* is //'` # 0.7.2
60                  boot="-"                  boot="-"
61                  test -s /var/lib/lxc/$name/on_boot && boot="boot"                  test -s /var/lib/lxc/$name/on_boot && boot="boot"
62                  echo "$name $status $boot $(lxc_rootfs $name) $(lxc_ip $name) $(lxc_hostname $name)"                  echo "$name $status $boot $(lxc_rootfs $name) $(lxc_ip $name) $(lxc_hostname $name)"
# Line 145  lxc_start() { Line 147  lxc_start() {
147  lxc_watchdog() {  lxc_watchdog() {
148  name=$1  name=$1
149  rootfs=$(lxc_rootfs $1)  rootfs=$(lxc_rootfs $1)
150    run=$rootfs/var/run
151    test -L $run && run=$rootfs/`readlink $run` # recent Debian have symlink to /run
152    cd $run || echo "can't cd watchdog into $run"
153    
154  while true; do  while true; do
         vps_utmp=${rootfs}/var/run/utmp  
155          tasks=`wc -l < /cgroup/${name}/tasks`          tasks=`wc -l < /cgroup/${name}/tasks`
156          stop_on=1 # init          stop_on=1 # init
157          sulogins=`lxc-ps --name $name | grep sulogin | wc -l`          sulogins=`lxc-ps --name $name | grep sulogin | wc -l`
# Line 158  while true; do Line 162  while true; do
162          test -z "$tasks" && exit 1          test -z "$tasks" && exit 1
163          if [ "$tasks" -eq $stop_on ]; then          if [ "$tasks" -eq $stop_on ]; then
164    
165                  runlevel="$(runlevel ${vps_utmp})"                  runlevel="$(runlevel utmp)"
166                  lxc_log "$name runlevel $runlevel"                  lxc_log "$name runlevel $runlevel"
167    
168                  case $runlevel in                  case $runlevel in
169                  N*)                  N*)
170                          # nothing for new boot state                          # nothing for new boot state
171                  ;;                  ;;
172                  ??0)                  ??0|unknown)
173                          lxc_log "$name halt"                          lxc_log "$name halt"
174                          lxc-stop -n "${name}"                          lxc-stop -n "${name}"
175                          lxc-wait -n ${name} -s STOPPED                          lxc-wait -n ${name} -s STOPPED
# Line 188  while true; do Line 192  while true; do
192          fi          fi
193    
194          # time of 5 minutes on it JUST IN CASE...          # time of 5 minutes on it JUST IN CASE...
195          inotifywait -qqt 300 ${vps_utmp}          inotifywait -qqt 300 utmp
196  done  done
197    
198  lxc_log "$name watchdog exited"  lxc_log "$name watchdog exited"
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