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f497c7c031
host if there are multiple storage pools in a cluster. The issue is as follows: 1. When CloudStack detects that a host is not responding to ping requests it'll send a fence command for this host to another host in the cluster. 2. The agent takes a long time to respond to this check if the storage is fenced. This is because the agent checks if the first host is writing to its heartbeat file on all pools in the cluster. It is doing this in a sequential manner on all storage pool. Making a fix to get rid of sleep, wait during HA. The behavior is now similar to Xenserver. RB: https://reviews.apache.org/r/6133/ Send-by:devdeep.singh@citrix.com
164 lines
3.1 KiB
Bash
Executable File
164 lines
3.1 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,timeo=133,retrans=10 &> /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 $interval ]
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then
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return 1
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fi
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return 0
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}
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if [ "$rflag" == "1" ]
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then
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check_hbLog
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if [ $? == 0 ]
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then
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echo "=====> ALIVE <====="
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else
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echo "=====> DEAD <======"
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fi
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exit 0
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elif [ "$cflag" == "1" ]
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then
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reboot
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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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