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168 lines
3.3 KiB
Bash
Executable File
168 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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help() {
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printf "Usage: $0
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-i nfs server ip
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-p nfs server path
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-m mount point
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-h host
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-r write/read hb log
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-c cleanup
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-t interval between read hb log\n"
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exit 1
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}
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#set -x
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NfsSvrIP=
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NfsSvrPath=
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MountPoint=
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HostIP=
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interval=
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rflag=0
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cflag=0
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while getopts 'i:p:m:h:t:rc' OPTION
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do
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case $OPTION in
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i)
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NfsSvrIP="$OPTARG"
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;;
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p)
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NfsSvrPath="$OPTARG"
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;;
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m)
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MountPoint="$OPTARG"
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;;
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h)
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HostIP="$OPTARG"
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;;
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r)
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rflag=1
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;;
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t)
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interval="$OPTARG"
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;;
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c)
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cflag=1
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;;
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*)
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help
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;;
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esac
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done
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if [ -z "$NfsSvrIP" ]
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then
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exit 1
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fi
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#delete VMs on this mountpoint
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deleteVMs() {
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local mountPoint=$1
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vmPids=$(ps aux| grep qemu | grep "$mountPoint" | awk '{print $2}' 2> /dev/null)
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if [ $? -gt 0 ]
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then
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return
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fi
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if [ -z "$vmPids" ]
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then
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return
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fi
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for pid in $vmPids
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do
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kill -9 $pid &> /dev/null
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done
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}
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#checking is there the same nfs server mounted under $MountPoint?
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mounts=$(cat /proc/mounts |grep nfs|grep $MountPoint)
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if [ $? -gt 0 ]
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then
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# remount it
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mount $NfsSvrIP:$NfsSvrPath $MountPoint -o sync,soft,proto=tcp,acregmin=0,acregmax=0,acdirmin=0,acdirmax=0,noac &> /dev/null
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if [ $? -gt 0 ]
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then
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printf "Failed to remount $NfsSvrIP:$NfsSvrPath under $MountPoint"
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exit 1
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fi
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if [ "$rflag" == "0" ]
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then
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deleteVMs $MountPoint
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fi
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fi
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hbFolder=$MountPoint/KVMHA/
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hbFile=$hbFolder/hb-$HostIP
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write_hbLog() {
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#write the heart beat log
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stat $hbFile &> /dev/null
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if [ $? -gt 0 ]
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then
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# create a new one
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mkdir -p $hbFolder &> /dev/null
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touch $hbFile &> /dev/null
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if [ $? -gt 0 ]
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then
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printf "Failed to create $hbFile"
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return 2
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fi
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fi
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timestamp=$(date +%s)
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echo $timestamp > $hbFile
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return $?
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}
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check_hbLog() {
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now=$(date +%s)
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hb=$(cat $hbFile)
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diff=`expr $now - $hb`
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if [ $diff -gt $interval ]
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then
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return $diff
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fi
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return 0
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}
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if [ "$rflag" == "1" ]
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then
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check_hbLog
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diff=$?
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if [ $diff == 0 ]
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then
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echo "=====> ALIVE <====="
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else
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echo "=====> Considering host as DEAD because last write on [$hbFile] was [$diff] seconds ago, but the max interval is [$interval] <======"
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fi
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exit 0
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elif [ "$cflag" == "1" ]
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then
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/usr/bin/logger -t heartbeat "kvmheartbeat.sh will reboot system because it was unable to write the heartbeat to the storage."
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sync &
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sleep 5
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echo b > /proc/sysrq-trigger
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exit $?
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else
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write_hbLog
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exit $?
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fi
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