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# |
# |
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# based on Tony Risinger post to lxc-users mailing list |
# based on Tony Risinger post to lxc-users mailing list |
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# http://www.mail-archive.com/lxc-users@lists.sourceforge.net/msg00074.html |
# http://www.mail-archive.com/lxc-users@lists.sourceforge.net/msg00074.html |
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# |
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# Install with: |
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# ln -sf /srv/sysadmin-cookbook/recepies/lxc/lxc-watchdog.sh /etc/init.d/lxc-watchdog |
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# update-rc.d lxc-watchdog defaults |
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which inotifywait >/dev/null || apt-get install inotify-tools |
which inotifywait >/dev/null || apt-get install inotify-tools |
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lxc_rootfs() { |
lxc_rootfs() { |
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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/^ *//' |
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} |
} |
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lxc_hostname() { |
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inside=`cat $(lxc_rootfs $1)/etc/hostname` |
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config=`grep lxc.utsname /var/lib/lxc/$name/config | cut -d= -f2` |
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echo "$config [$inside]"; |
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} |
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49 |
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lxc_ip() { |
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( grep lxc.network.ipv4 /var/lib/lxc/$name/config | grep -v '^#' | cut -d= -f2 || \ |
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grep address $(lxc_rootfs $name)/etc/network/interfaces | grep -v '^#' | sed 's/.*address //' ) | \ |
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head -1 | \ |
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sed -e 's/ *//g' -e 's/\/.*$//' |
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} |
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lxc_status() { |
lxc_status() { |
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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 |
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boot=" " |
boot="-" |
59 |
test -s /var/lib/lxc/$name/on_boot && boot="boot" |
test -s /var/lib/lxc/$name/on_boot && boot="boot" |
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echo "$name $status $boot $(lxc_rootfs $name)" |
echo "$name $status $boot $(lxc_rootfs $name) $(lxc_ip $name) $(lxc_hostname $name)" |
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done |
done ) | column -t |
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} |
} |
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rootfs=$(lxc_rootfs $1) |
rootfs=$(lxc_rootfs $1) |
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ls \ |
ls \ |
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$rootfs/etc/rc?.d/*checkroot* \ |
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$rootfs/etc/rc?.d/*umountfs \ |
$rootfs/etc/rc?.d/*umountfs \ |
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$rootfs/etc/rc?.d/*umountroot \ |
$rootfs/etc/rc?.d/*umountroot \ |
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$rootfs/etc/rc?.d/*hwclock* \ |
$rootfs/etc/rc?.d/*hwclock* \ |
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$rootfs/etc/rc?.d/*udev* \ |
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$rootfs/etc/rc?.d/*checkfs* \ |
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2>/dev/null | xargs -i rm -v {} |
2>/dev/null | xargs -i rm -v {} |
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echo $1 > $rootfs/etc/hostname |
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grep $1 $rootfs/etc/hosts || echo "$(lxc_ip $1) $1" >> $rootfs/etc/hosts |
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} |
} |
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# let container respond to kill -SIGPWR |
# let container respond to kill -SIGPWR |
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inittab=$rootfs/etc/inittab |
inittab=$rootfs/etc/inittab |
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if ! grep "$add" ${inittab} >/dev/null ; then |
if test -e $inittab && ! grep "$add" ${inittab} >/dev/null ; then |
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grep -v "$remove" ${inittab} > ${inittab}.new |
grep -v "$remove" ${inittab} > ${inittab}.new |
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echo $add >> ${inittab}.new |
echo $add >> ${inittab}.new |
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mv ${inittab}.new ${inittab} |
mv ${inittab}.new ${inittab} |
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lxc_start() { |
lxc_start() { |
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name=$1 |
name=$1 |
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rootfs=$(lxc_rootfs $1) |
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129 |
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if [ ! -e $rootfs ] ; then |
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echo "ERROR $name rootfs $rootfs not found" |
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return |
132 |
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fi |
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if ! lxc-info -n $name | grep RUNNING ; then |
if ! lxc-info -n $name | grep RUNNING ; then |
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lxc_log "$name start" |
lxc_log "$name start" |
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dev=`df -P $rootfs | tail -1 | cut -d" " -f1` |
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mount $dev -o remount,rw # fix debian upgrade which remounts dir ro |
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lxc-start -n $name -o /tmp/${name}.log -d |
lxc-start -n $name -o /tmp/${name}.log -d |
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lxc-wait -n $name -s RUNNING |
lxc-wait -n $name -s RUNNING |
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lxc-info -n $name |
lxc-info -n $name |
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while true; do |
while true; do |
150 |
vps_utmp=${rootfs}/var/run/utmp |
vps_utmp=${rootfs}/var/run/utmp |
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tasks=`wc -l < /cgroup/${name}/tasks` |
tasks=`wc -l < /cgroup/${name}/tasks` |
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stop_on=1 # init |
153 |
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sulogins=`lxc-ps --name backuppc | grep sulogin | wc -l` |
154 |
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if [ "$sulogins" -gt 0 ] ; then |
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stop_on=`expr $stop_on + $sulogins` |
156 |
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fi |
157 |
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158 |
test -z "$tasks" && exit 1 |
test -z "$tasks" && exit 1 |
159 |
if [ "$tasks" -eq 1 ]; then |
if [ "$tasks" -eq $stop_on ]; then |
160 |
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161 |
runlevel="$(runlevel ${vps_utmp})" |
runlevel="$(runlevel ${vps_utmp})" |
162 |
lxc_log "$name runlevel $runlevel" |
lxc_log "$name runlevel $runlevel" |
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;; |
;; |
185 |
esac |
esac |
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else |
else |
187 |
lxc_log "$name $tasks tasks" |
lxc_log "$name $tasks tasks $sulogins console" |
188 |
fi |
fi |
189 |
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# time of 5 minutes on it JUST IN CASE... |
# time of 5 minutes on it JUST IN CASE... |
196 |
} |
} |
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198 |
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199 |
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usage() { |
200 |
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echo "Usage: $0 {start|stop|restart|status|boot|disable} [name name ... ]" >&2 |
201 |
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exit 3 |
202 |
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} |
203 |
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command_on_lxc() { |
command_on_lxc() { |
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command=$1 |
command=$1 |
206 |
shift |
shift |
212 |
start) |
start) |
213 |
lxc_exists $1 |
lxc_exists $1 |
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cleanup_init_scripts $1 |
cleanup_init_scripts $1 |
215 |
setup_inittab $1 ::power "p0::powerfail:/sbin/init 0" |
setup_inittab $1 ":respawn:/sbin/getty.*tty1" "c1:12345:respawn:/sbin/getty 38400 tty1 linux" |
216 |
setup_inittab $1 ::ctrlaltdel "p6::ctrlaltdel:/sbin/init 6" |
setup_inittab $1 "::power" "p0::powerfail:/sbin/init 0" |
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setup_inittab $1 "::ctrlaltdel" "p6::ctrlaltdel:/sbin/init 6" |
218 |
lxc_start $1 |
lxc_start $1 |
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# give container 5 seconds to start more than one process |
# give container 5 seconds to start more than one process |
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( 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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echo -n > /var/lib/lxc/$1/on_boot |
echo -n > /var/lib/lxc/$1/on_boot |
237 |
;; |
;; |
238 |
*) |
*) |
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echo "Usage: $0 {start|stop|restart|status}" >&2 |
usage |
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exit 3 |
|
240 |
;; |
;; |
241 |
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242 |
esac |
esac |
244 |
} |
} |
245 |
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246 |
command=$1 |
command=$1 |
247 |
shift |
test -z "$command" && usage |
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248 |
test "$command" = "status" && lxc_status && exit |
test "$command" = "status" && lxc_status && exit |
249 |
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shift |
250 |
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251 |
if [ -z "$1" ] ; then |
if [ -z "$1" ] ; then |
252 |
ls /var/lib/lxc/*/on_boot | while read path ; do |
ls /var/lib/lxc/*/on_boot | while read path ; do |