cloudstack/scripts/vm/hypervisor/kvm/kvmheartbeat.sh
2010-11-09 22:03:22 -08:00

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help() {
printf "Usage: $0
-i nfs server ip
-p nfs server path
-m mount point
-h host
-r write/read hb log
-t interval between read hb log\n"
exit 1
}
#set -x
NfsSvrIP=
NfsSvrPath=
MountPoint=
HostIP=
interval=
rflag=0
while getopts 'i:p:m:h:t:r' OPTION
do
case $OPTION in
i)
NfsSvrIP="$OPTARG"
;;
p)
NfsSvrPath="$OPTARG"
;;
m)
MountPoint="$OPTARG"
;;
h)
HostIP="$OPTARG"
;;
r)
rflag=1
;;
t)
interval="$OPTARG"
;;
*)
help
;;
esac
done
if [ -z "$NfsSvrIP" ]
then
exit 1
fi
#delete VMs on this mountpoint
deleteVMs() {
local mountPoint=$1
vmPids=$(ps aux| grep qemu | grep $mountPoint* | awk '{print $2}' &> /dev/null)
if [ $? -gt 0 ]
then
return
fi
if [ -z "$vmPids" ]
then
return
fi
for pid in vmPids
do
kill -9 $pid &> /dev/null
done
}
#checking is there the same nfs server mounted under $MountPoint?
mounts=$(cat /proc/mounts |grep nfs|grep $MountPoint)
if [ $? -gt 0 ]
then
# remount it
mount $NfsSvrIP:$NfsSvrPath $MountPoint -o sync,soft,proto=tcp,acregmin=0,acregmax=0,acdirmin=0,acdirmax=0,noac,timeo=133,retrans=10 &> /dev/null
if [ $? -gt 0 ]
then
exit 1
fi
if [ "$rflag" == "0" ]
then
deleteVMs $MountPoint
fi
fi
hbFolder=$MountPoint/KVMHA/
hbFile=$hbFolder/hb-$HostIP
write_hbLog() {
#write the heart beat log
stat $hbFile &> /dev/null
if [ $? -gt 0 ]
then
# create a new one
mkdir -p $hbFolder &> /dev/null
touch $hbFile &> /dev/null
if [ $? -gt 0 ]
then
return 2
fi
fi
timestamp=$(date +%s)
echo $timestamp > $hbFile
return $?
}
check_hbLog() {
oldTimeStamp=$(cat $hbFile)
sleep $interval &> /dev/null
newTimeStamp=$(cat $hbFile)
if [ $newTimeStamp -gt $oldTimeStamp ]
then
return 0
fi
return 1
}
if [ "$rflag" == "1" ]
then
check_hbLog
if [ $? == 0 ]
then
echo "=====> ALIVE <====="
else
echo "=====> DEAD <======"
fi
exit 0
else
write_hbLog
exit $?
fi