/[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 190 by root, Tue Mar 16 23:14:38 2010 UTC revision 229 by dpavlin, Sat Sep 11 12:19:12 2010 UTC
# Line 37  lxc_exists() { Line 37  lxc_exists() {
37    
38    
39  lxc_rootfs() {  lxc_rootfs() {
40          grep lxc.rootfs "/var/lib/lxc/$1/config" | cut -d= -f2 | sed 's/^ *//'          grep '^ *lxc\.rootfs *=' "/var/lib/lxc/$1/config" | cut -d= -f2 | sed 's/^ *//'
41  }  }
42    
43    
44  lxc_status() {  lxc_status() {
45          lxc-ls -1 | 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 | xargs -i lxc-info -n {} | sed "s/'//g" | while read name is status ; do
46                  boot="    "                  boot="-"
47                    hostname=`cat $(lxc_rootfs $name)/etc/hostname`
48                    ip=`grep address $(lxc_rootfs $name)/etc/network/interfaces | sed 's/.*address //'`
49                    test -z "$ip" && ip=`grep lxc.network.ipv4 /var/lib/lxc/$name/config | cut -d= -f2`
50                  test -s /var/lib/lxc/$name/on_boot && boot="boot"                  test -s /var/lib/lxc/$name/on_boot && boot="boot"
51                  echo "$name $status $boot $(lxc_rootfs $name)"                  echo "$name $status $boot $(lxc_rootfs $name) $ip $hostname"
52          done          done ) | column -t
53  }  }
54    
55    
# Line 57  cleanup_init_scripts() { Line 60  cleanup_init_scripts() {
60                  $rootfs/etc/rc?.d/*umountfs \                  $rootfs/etc/rc?.d/*umountfs \
61                  $rootfs/etc/rc?.d/*umountroot \                  $rootfs/etc/rc?.d/*umountroot \
62                  $rootfs/etc/rc?.d/*hwclock* \                  $rootfs/etc/rc?.d/*hwclock* \
63                    $rootfs/etc/rc?.d/*udev* \
64          2>/dev/null | xargs -i rm -v {}          2>/dev/null | xargs -i rm -v {}
65    
66            echo $1 > $rootfs/etc/hostname
67  }  }
68    
69    
# Line 68  setup_inittab() { Line 74  setup_inittab() {
74    
75          # let container respond to kill -SIGPWR          # let container respond to kill -SIGPWR
76          inittab=$rootfs/etc/inittab          inittab=$rootfs/etc/inittab
77          if ! grep "$add" ${inittab} >/dev/null ; then          if test -e $inittab && ! grep "$add" ${inittab} >/dev/null ; then
78                  grep -v "$remove" ${inittab} > ${inittab}.new                  grep -v "$remove" ${inittab} > ${inittab}.new
79                  echo $add >> ${inittab}.new                  echo $add >> ${inittab}.new
80                  mv ${inittab}.new ${inittab}                  mv ${inittab}.new ${inittab}
# Line 106  lxc_stop() { Line 112  lxc_stop() {
112    
113  lxc_start() {  lxc_start() {
114          name=$1          name=$1
115            rootfs=$(lxc_rootfs $1)
116    
117            if [ ! -e $rootfs ] ; then
118                    echo "ERROR $name rootfs $rootfs not found"
119                    return
120            fi
121    
122          if ! lxc-info -n $name | grep RUNNING ; then          if ! lxc-info -n $name | grep RUNNING ; then
123                  lxc_log "$name start"                  lxc_log "$name start"
# Line 180  case "$command" in Line 192  case "$command" in
192  start)  start)
193          lxc_exists $1          lxc_exists $1
194          cleanup_init_scripts $1          cleanup_init_scripts $1
195          setup_inittab $1 ::power      "p0::powerfail:/sbin/init 0"          setup_inittab $1 ":respawn:/sbin/getty.*tty1"   "c1:12345:respawn:/sbin/getty 38400 tty1 linux"
196          setup_inittab $1 ::ctrlaltdel "p6::ctrlaltdel:/sbin/init 6"          setup_inittab $1 "::power"                      "p0::powerfail:/sbin/init 0"
197            setup_inittab $1 "::ctrlaltdel"                 "p6::ctrlaltdel:/sbin/init 6"
198          lxc_start $1          lxc_start $1
199          # give container 5 seconds to start more than one process          # give container 5 seconds to start more than one process
200          ( sleep 5 ; nohup $0 watchdog $1 >> /tmp/$1.log 2>/dev/null ) &          ( sleep 5 ; nohup $0 watchdog $1 >> /tmp/$1.log 2>/dev/null ) &
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