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Host-HA offers investigation, fencing and recovery mechanisms for host that for any reason are malfunctioning. It uses Activity and Health checks to determine current host state based on which it may degrade a host or try to recover it. On failing to recover it, it may try to fence the host. The core feature is implemented in a hypervisor agnostic way, with two separate implementations of the driver/provider for Simulator and KVM hypervisors. The framework also allows for implementation of other hypervisor specific provider implementation in future. The Host-HA provider implementation for KVM hypervisor uses the out-of-band management sub-system to issue IPMI calls to reset (recover) or poweroff (fence) a host. The Host-HA provider implementation for Simulator provides a means of testing and validating the core framework implementation. Signed-off-by: Abhinandan Prateek <abhinandan.prateek@shapeblue.com> Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
135 lines
2.8 KiB
Bash
Executable File
135 lines
2.8 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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-u volume uuid list
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-t time on ms
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-d suspect time\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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UUIDList=
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MSTime=
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SuspectTime=
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while getopts 'i:p:m:u:t:h:d:' 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="$OPTARG"
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;;
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u)
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UUIDList="$OPTARG"
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;;
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t)
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MSTime="$OPTARG"
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;;
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d)
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SuspectTime="$OPTARG"
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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 "$NfsSvrIP" ]
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then
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exit 2
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fi
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if [ -z "$SuspectTime" ]
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then
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exit 2
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fi
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hbFile="$MountPoint/KVMHA/hb-$HostIP"
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acFile="$MountPoint/KVMHA/ac-$HostIP"
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# First check: heartbeat file
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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 [ $diff -lt 61 ]
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then
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echo "=====> ALIVE <====="
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exit 0
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fi
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if [ -z "$UUIDList" ]
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then
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echo "=====> DEAD <======"
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exit 0
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fi
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# Second check: disk activity check
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cd $MountPoint
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latestUpdateTime=$(stat -c %Y $(echo $UUIDList | sed 's/,/ /g') | sort -nr | head -1)
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if [ ! -f $acFile ]; then
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echo "$SuspectTime:$latestUpdateTime:$MSTime" > $acFile
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if [[ $latestUpdateTime -gt $SuspectTime ]]; then
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echo "=====> ALIVE <====="
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else
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echo "=====> DEAD <======"
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fi
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else
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acTime=$(cat $acFile)
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arrTime=(${acTime//:/ })
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lastSuspectTime=${arrTime[0]}
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lastUpdateTime=${arrTime[1]}
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echo "$SuspectTime:$latestUpdateTime:$MSTime" > $acFile
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if [[ $lastSuspectTime -ne $SuspectTime ]]; then
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if [[ $latestUpdateTime -gt $SuspectTime ]]; 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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else
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if [[ $latestUpdateTime -gt $lastUpdateTime ]]; 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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fi
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fi
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exit 0
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