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260 lines
8.8 KiB
Bash
Executable File
260 lines
8.8 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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version=0.9.1
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OPTIND=1
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verb=0
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logDir="/nsr/logs/cloudstack/"
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snapPrefix="CSBKP_"$RANDOM"_"
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clusterClient=""
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networkerServer=""
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hvVersion=""
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libvVersion=""
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apiVersion=""
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kvmDName=""
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kvmDUuid=""
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logFile=""
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mediaPool=""
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retentionTime=""
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log () {
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[[ "$verb" -eq 1 ]] && builtin echo "$@"
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if [[ "$1" == "-ne" || "$1" == "-e" || "$1" == "-n" ]]; then
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builtin echo -e "$(date '+%Y-%m-%d %H-%M-%S>')" "${@: 2}" >> "$logFile"
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else
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builtin echo "$(date '+%Y-%m-%d %H-%M-%S>')" "$@" >> "$logFile"
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fi
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}
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vercomp(){
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local a b IFS=. -; set -f
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printf -v a %08d $1; printf -v b %08d $3
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test $a "$2" $b
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}
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usage() {
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echo "
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Usage:[-v] [-h] [-l log_dir] [-dr] [-s networker_server] [-c networker_cluster_client] [-t target_vm] [-u target_uuid] [-p snapprefix] [-P media_pool ] [-R retention_time ]
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Options:
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-h Help and usage
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-v Enable verbose mode
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-l log_dir. Specify log directory. Default is /nsr/logs/cloudstack
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-s networker_server Specifiy the EMC Networker server we are going to use
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-c networker_cluster_client Specify the EMC Networker client CLUSTER to use
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-t target_vm KVM domain to backup
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-u target_uuid KVM domain to backup
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-p Snapshot Prefix for backups
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-P mediaPool EMC Networker Media Pool
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-R retention_time Backup retention time
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Supplements Apache Cloudstack B&R Framework EMC Networker plugin and performs the backup of the Virtual Machines
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"
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}
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sanity_checks() {
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log "Performing environment sanity checks..."
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log -ne "\t[1] Checking if Networker is installed\t"
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if [[ $(systemctl list-unit-files | grep networker) = *networker* ]]; then
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log "Success"
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else
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log "Failure"
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log -e "\n\tNetworker Service NOT FOUND. Make sure that Networker client is properly installed"
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exit 1
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fi
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log -ne "\t[2] Checking if Networker is running\t"
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if [[ $(systemctl is-active networker) = *active* ]]; then
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log "Success"
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else
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log "Failure"
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log -e "\n\tNetworker Service is not running. Investigate Networker logs, startup server and try again"
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exit 2
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fi
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log -ne "\t[3] Checking Networker DNS Resolution\t"
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if [[ $(getent hosts "$networkerServer") = *$networkerServer* ]]; then
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log "Success"
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else
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log "Failure"
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log -e "\n\tNetworker Server cannot be resolved. Backups will most probably fail. Consider adding the ip/hostname to /etc/host or fix DNS resolution"
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exit 3
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fi
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log -ne "\t[4] Checking QEMU / Libvirt Versions \t"
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hvVersion=$(virsh version | grep hypervisor | awk '{print $(NF)}')
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libvVersion=$(virsh version | grep libvirt | awk '{print $(NF)}' | tail -n 1)
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apiVersion=$(virsh version | grep API | awk '{print $(NF)}')
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if vercomp "$hvVersion" \> 2.1.2; then
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log -n "Success"
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log -ne "\t\t [ Libvirt: $libvVersion apiVersion: $apiVersion ]"
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echo
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else
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log "Failure"
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log -e "\n\tYour QEMU version $hvVersion is unsupported. Consider upgrading at least to latest QEMU at branch 2"
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exit 4
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fi
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log -ne "\t[4] Checking Permissions \t\t"
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if groups $USER | grep -q '\blibvirt\b'; then
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log -n "Success"
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log -ne "\t\t User $USER is part of libvirt group"
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echo
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else
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log "Failure - User $USER is not part of libvirt group"
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exit 6
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fi
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log "Environment Sanity Checks successfully passed"
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}
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echo "
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Cloudstack B&R Framework - EMC Networker backup script
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Version $version
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"
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backup_domain() {
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name=$1
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snapName=$2
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log "Preparing snapshots and gathering information for backing up domain $name under snapshot name $snapName"
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log "Retention time is $retentionTime"
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declare -A TRGSRC
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while IFS=',' read -r TARGET SOURCE
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do
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if [[ $SOURCE != "-" ]]; then
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TRGSRC+=(["$TARGET"]="$SOURCE")
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fi
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done < <(virsh -c qemu:///system domblklist "$name" --details | grep file | grep -v 'cdrom' | grep -v 'floppy' | sed 's/ */,/g' | cut -d',' -f 4-)
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diskspec=""
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for target in "${!TRGSRC[@]}"; do
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log -e "\tDisk for $target is at ${TRGSRC[${target}]}"
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diskspec="$diskspec --diskspec $target,snapshot=external"
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disks="$disks ${TRGSRC[${target}]} "
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done
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cmd="$(virsh -c qemu:///system snapshot-create-as --domain "$name" --name "$snapName" --no-metadata --atomic --quiesce --disk-only "$diskspec")"
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retVal=$?
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log "$cmd"
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if [ "$retVal" -ne 0 ]; then
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log "Agent not responding, trying to snapshot directly"
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cmd="$(virsh -c qemu:///system snapshot-create-as --domain "$name" --name "$snapName" --no-metadata --atomic --disk-only "$diskspec")"
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retVal=$?
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if [ "$retVal" -ne 0 ]; then
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log "Failed to create snapshot for $name"
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exit 7
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fi
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log "Created snapshot(s) for $name"
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fi
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cmd="$(save -LL -q -e "${retentionTime}" -s "$networkerServer" -c "$clusterClient" -N "$name" -b "$mediaPool" $disks)"
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retVal=$?
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log "$cmd"
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echo "$cmd" | grep -oE 'savetime=[0-9]{10}'
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if [ $retVal -ne 0 ]; then
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log "Unable to backup $disks for $name"
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else
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log "Backup $disks for $name completed!!"
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fi
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#Merge changes and conclude
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SNAPSHOTS="$(virsh -c qemu:///system domblklist "$name" --details | grep file | grep -v 'cdrom' | grep -v 'floppy' | awk '{print $4}')"
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for target in "${!TRGSRC[@]}"; do
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log "Merging Snasphots for $target"
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cmd="$(virsh -c qemu:///system blockcommit "$name" "$target" --active --pivot)"
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retVal=$?
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log "$cmd"
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if [ $retVal -ne 0 ]; then
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log "Unable to merge disk %target changes for domain $name"
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exit 8
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fi
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done
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#Clean snapshots
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for snapshot in $SNAPSHOTS; do
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log "Deleting Snapshot $snapshot"
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cmd=$(rm -f "$snapshot")
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retVal=$?
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log "$cmd"
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if [ $retVal -ne 0 ]; then
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log "Unable to delete snapshot $snapshot"
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exit 8
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fi
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log "Deleted Snapshot: $snapshot"
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done
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}
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while getopts "h?vs:l:c:t:u:p:P:R:" opt; do
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case "$opt" in
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h|\?)
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usage
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exit 254
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;;
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c) clusterClient="$OPTARG"
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;;
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s) networkerServer="$OPTARG"
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;;
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l) logDir="$OPTARG"
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;;
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t) kvmDName="$OPTARG"
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;;
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u) kvmDUuid="$OPTARG"
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;;
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p) snapPrefix="$OPTARG"
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;;
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P) mediaPool="$OPTARG"
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;;
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R) retentionTime="$OPTARG"
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;;
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v) verb=1
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;;
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esac
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done
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shift $((OPTIND-1))
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[ "${1:-}" = "--" ] && shift
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if [[ -z "$networkerServer" || -z "$kvmDName" || -z "$clusterClient" || -z "$kvmDUuid" ]]; then
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usage
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exit 255
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fi
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if [ ! -d "$logDir" ]; then
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mkdir -p "$logDir"
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fi
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logFile="$logDir/BACKUP-$kvmDName-$(date +'%Y_%m_%d_%I_%M_%p').log"
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# Perform Initial sanity checks
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sanity_checks
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log -e "\nLooking for domain $kvmDName with UUID $kvmDUuid"
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if [[ "$kvmDName" == $(virsh -c qemu:///system domname "$kvmDUuid" | head -1) && "$kvmDUuid" == $(virsh -c qemu:///system domuuid "$kvmDName" | head -1) ]]; then
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log "Domain found...."
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else
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log "Domain not found on this host. Aborting....."
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log "Check for the location of the Instance in the cloudstack management console"
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exit 5
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fi
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backup_domain "$kvmDName" "$snapPrefix$kvmDName"
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exit 0 |