pax_global_header00006660000000000000000000000064133645327010014516gustar00rootroot0000000000000052 comment=20f62fe270e7a15e4574ab351e455c5627c9d79e LICENSE000066400000000000000000001045141336453270100120740ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. 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Copyright (C) This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Also add information on how to contact you by electronic and paper mail. If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode: Copyright (C) This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see . The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read . README.md000066400000000000000000000016021336453270100123400ustar00rootroot00000000000000# libvirt-imagebackup Bash-Backup-Skript zum Sichern der VM-Images im laufenden Betrieb mit libvirt Installation und Betrieb ------------------------ * Sicherstellen das bei allen zu sichernden VMs der QEMU Guest Agent aktiv ist, z.B. mit `virsh domtime "vm"` (siehe [QEMU Wiki](https://wiki.libvirt.org/page/Qemu_guest_agent)) * backup-vms.conf.dist nach /etc/backup-vms.conf kopieren und optional anpassen * Snapshots für evtl. eingebundene Blockdevices im XML der VM deaktivieren: `` * backup-vms.sh aufrufen und zuschauen Check MK Agent -------------- Der Sicherungsstatus lässt sich jetzt über [Check MK](https://mathias-kettner.de/check_mk.html) auslesen. Die Datei checkmk-local/backup-vms nach /usr/lib/check-mk-agent/local kopieren und mit ausführenden rechten versehen. Im Anschluss in der Check MK Site die Dienste neu discovern. backup-vms.conf.dist000066400000000000000000000023261336453270100147460ustar00rootroot00000000000000### Log file ### #LOG=/var/log/backup-vms.log ### Local directories # local backup target directory DST=/var/backups/kvmvms # if ONE_FOLDER_PER_BACKUP is set to true, a new folder (based on the current timestamp) will be created for every backup. ONE_FOLDER_PER_BACKUP=false #Name of the 7zip binary (it's not the same on all systems) ZIP_BIN=7za #ZIP_BIN=7z ### External backups. Uncomment if used. # remote backup target directory #DSTEXT=/srv/backup/autofs/nfs # passphrase to encrypt remote backups #PASSPHRASE="${DST}/.passphrase" # VMs that do not have a Qemu-guest-agent and need to be offline for the backup OFFLINE=( # "db.roessner-net.de" ) # VMs that do not shutdown gracefully will be resetted by virsh destroy FORCE_SHUTDOWN=( # "vms1" ) # VMs to exclude from backup SKIP=( # "vms1" ) ### Local directories to backup # List of local directories on the physical host # uncomment or append other directories to backup BACKUPDIRS=( "/root" "/etc" "/usr/local" "/var/spool/cron/crontabs" # "/export/packages" ) ### Tasks to run # Order matters! # (uncomment encrypt and backup_local_dirs if needed) TASKS=( "run_online" "run_offline" # "encrypt" # "backup_local_dirs" ) backup-vms.sh000066400000000000000000000260771336453270100135020ustar00rootroot00000000000000#!/bin/bash # Online backup for KVM guests # Copyright 2016, 2017, # Jens Tautenhahn # Christian Roessner # # Contributors: Jan Wenzel, Oliver Guenther, Stephan Eisvogel # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License at for # more details. # CONFIG=/etc/backup-vms.conf # ============================================================================ if [ ! -n "$BASH" ] ;then echo Please run this script with bash; exit 1; fi # # Exit on config check # function exit_on_check() { echo >&2 "$*" exit 1 } # # Config sanity checks # [[ -f $CONFIG ]] || exit_on_check "Config file $CONFIG not found." source $CONFIG command -v virsh >/dev/null 2>&1 || exit_on_check "Libvirt not found. Aborting." command -v rsync >/dev/null 2>&1 || exit_on_check "Rsync not found. Aborting." command -v $ZIP_BIN >/dev/null 2>&1 || exit_on_check "7Zip not found. Aborting." command -v fuser >/dev/null 2>&1 || exit_on_check "fuser not found. Aborting." for var in DST; do [[ -n ${!var} ]] || exit_on_check "${var} is not set" done if [[ -n $DSTEXT ]]; then [[ -n $PASSPHRASE ]] || exit_on_check "PASSPHRASE is not set" [[ -f $PASSPHRASE ]] || exit_on_check "PASSPHRASE file not found" fi for var in OFFLINE BACKUPDIRS TASKS; do [[ "$(declare -p $var 2> /dev/null)" =~ "declare -a" ]] || exit_on_check "$var must be an array" done for dir in ${BACKUPDIRS[@]}; do [[ -d $dir ]] || exit_on_check "BACKUPDIRS $dir not found" done # If no passphrase is set, we still want to be able to backup local files ZIPPASS= [[ -n ${PASSPHRASE} ]] && ZIPPASS="-p${PASSPHRASE}" # Set optional Logfileparameter LOGPARM=tee [[ -n ${LOG} ]] && LOGPARM="tee -a $LOG" DATE=$(date +%Y%m%d) TIMESTAMP=$(date +%s) LOCK=/var/lock/${0##*/} # if ONE_FOLDER_PER_BACKUP is set to true, a new folder (based on the current timestamp) will be created for every backup. if [ "$ONE_FOLDER_PER_BACKUP" = true ] ; then DST=$DST/$TIMESTAMP fi if ! mkdir $LOCK 2>/dev/null; then echo Already running or stale lock ${LOCK} exists. >&2 exit 1 fi trap -- "rmdir $LOCK" EXIT [[ -d ${DST} ]] || mkdir -p ${DST} rm -f ${DST}/LATEST_* if [[ -n "$DSTEXT" ]]; then rm -f ${DSTEXT}/LATEST_* fi # Load last Runtime RUNTIME=0 if [ -f ${DST}/STATUS ]; then source ${DST}/STATUS fi STARTED=`date +%s` # # Logline # function logline() { echo $(date -R) "$*" | $LOGPARM } function status_ok() { echo STATUS=OK > ${DST}/STATUS echo STARTED=$STARTED >> ${DST}/STATUS echo RUNTIME=$((`date +%s` - $STARTED)) >> ${DST}/STATUS } function status_running() { echo STATUS=RUNNING > ${DST}/STATUS echo STARTED=$STARTED >> ${DST}/STATUS echo RUNTIME=$RUNTIME >> ${DST}/STATUS } function status_failed() { echo STATUS=FAILED > ${DST}/STATUS echo STARTED=$STARTED >> ${DST}/STATUS echo RUNTIME=$RUNTIME >> ${DST}/STATUS } # # Verify returncodes of a pipe on exit, if at least one is none zero # function exit_on_error() { rcs=${PIPESTATUS[*]}; rc=0; for i in ${rcs}; do rc=$(($i > $rc ? $i : $rc)); done if (( $rc != 0 )); then logline "Error: Process $* exited with code $rc" status_failed exit $rc fi } # # Backup running guests # function run_online() { for vm in $(virsh list --name); do for exc in ${OFFLINE[@]}; do if [[ "${vm}" == "${exc}" ]]; then continue 2 fi done for excl in ${SKIP[@]}; do if [[ "${vm}" == "${excl}" ]]; then logline "Skipping ${vm}" continue 2 fi done unset imgs unset imgsnew logline "Backup KVM online guest '${vm}'" # Get list of disk names and image paths declare -A imgs eval $(virsh domblklist ${vm} --details \ | awk '/^[[:space:]]*file[[:space:]]+disk/ {print "imgs["$3"]="$4}') # Test if there exists already a file with extension .backup for img in ${imgs[@]}; do # Skip suffix as it will already be created with basename + backup img=${img%@(.img|.qcow2)} if [[ -f ${img}.backup ]]; then logline "${img}.backup from VM ${vm} already exists" continue 2 fi done # Create snapshots for all disks virsh snapshot-create-as ${vm} backup \ --disk-only --atomic --no-metadata --quiesce 2>&1 | $LOGPARM exit_on_error virsh snapshot-create # Remember backup file names for future removal declare -A imgsbackup eval $(virsh domblklist ${vm} --details \ | awk '/^[[:space:]]*file[[:space:]]+disk/ {print "imgsbackup["$3"]="$4}') # Backup original disk image of the VM for img in ${imgs[@]}; do mkdir -p ${DST}/${vm}/ touch ${DST}/${vm} if [[ -f ${DST}/${vm}/$(basename ${img}) ]]; then if [ -n ${HISTORY} ]; then if [[ -f ${DST}/${vm}/$(basename ${img}).1 ]]; then rm ${DST}/${vm}/$(basename ${img}).1 exit_on_error remove old backup fi mv ${DST}/${vm}/$(basename ${img}) ${DST}/${vm}/$(basename ${img}).1 exit_on_error move old backup else rm ${DST}/${vm}/$(basename ${img}) fi fi rsync --progress --sparse ${img} ${DST}/${vm}/ 2>&1 | $LOGPARM exit_on_error rsync done # Merge snapshot file with original disk image for disc in ${!imgs[@]}; do virsh blockcommit ${vm} ${disc} --active --wait --pivot 2>&1 | $LOGPARM exit_on_error virsh blockcommit done # Test if all original disks are back in place declare -A imgsnew eval $(virsh domblklist ${vm} --details | \ awk '/^[[:space:]]*file[[:space:]]+disk/ {print "imgsnew["$3"]="$4}') for disc in ${!imgsnew[@]}; do if [[ ${imgs[$disc]} != ${imgsnew[$disc]} ]]; then logline "Error while writing snapshot for VM ${vm} ${disc}" continue 2 fi done # Sanity check/cleanup that no original filename is in the backup array for match in "${imgs[@]}"; do for i in "${!imgsbackup[@]}"; do if [[ ${imgsbackup[$i]} = "${match}" ]]; then unset "imgsbackup[$i]" fi done done # Remove orphaned backup snapshot files for img in ${imgsbackup[@]}; do fuser -s ${img} || rm ${img} exit_on_error remove orphaned backup snapshots done unset imgsbackup # Save XML VM definition file virsh dumpxml ${vm} > ${DST}/${vm}/domain.xml logline "Backup KVM of '${vm}' complete" done } # # Shutdown guests that need to be ofline for a backup # function shutdown_offline() { declare -i count for exc in ${OFFLINE[@]}; do for excl in ${SKIP[@]}; do if [[ "${exc}" == "${excl}" ]]; then continue 2 fi done logline "Shutting down '${exc}'" virsh shutdown ${exc} count=0 while true; do # fix problem with prefixes in vm-names (e.g. vms1 vs vms12) virsh list | grep "${exc} " >/dev/null 2>&1 if [[ "$?" -eq 1 ]]; then break fi sleep 5 let count=${count}+1 if [[ ${count} -gt 300 ]]; then logline "Failed to shutdown guest ${exc}" for force in ${FORCE_SHUTDOWN[@]}; do if [[ "${force}" == "${exc}" ]]; then logline "Attempt to destroy ${exc}" virsh destroy ${exc} # wait an extra minute count=288 continue 2 fi done exit 1 fi done done } # # Backup inactive VMs # function run_offline() { shutdown_offline for vm in $(virsh list --name --inactive); do for excl in ${SKIP[@]}; do if [[ "${vm}" == "${excl}" ]]; then logline "Skipping ${vm}" continue 2 fi done unset imgs logline "Backup KVM offline guest '${vm}'" # Get list of image names and paths declare -A imgs eval $(virsh domblklist ${vm} --details \ | awk '/^[[:space:]]*file[[:space:]]+disk/ {print "imgs["$3"]="$4}') # Backup original disk image of the VM for img in ${imgs[@]}; do mkdir -p ${DST}/${vm}/ touch ${DST}/${vm} if [[ -f ${DST}/${vm}/$(basename ${img}) ]]; then rm ${DST}/${vm}/$(basename ${img}) fi rsync --progress --sparse ${img} ${DST}/${vm}/ | $LOGPARM exit_on_error rsync done # Save XML VM definition file virsh dumpxml ${vm} > ${DST}/${vm}/domain.xml for exc in ${OFFLINE[@]}; do if [[ "${vm}" == "${exc}" ]]; then virsh start ${exc} | $LOGPARM fi done done } # # Encrypt disk image files and copy them to the NFS volume # function encrypt() { # Enrypt and copy to $DSTEXT for vm in $(virsh list --name --all); do logline "Compress and encrypt data '${vm}'" ( cd ${DST} [[ -f ${vm}.tar.7z ]] && rm -f ${vm}.tar.7z tar cf - --sparse ${vm} | \ $ZIP_BIN a -si -m0=lzma2 -mx=3 -bso0 -bsp0 -p$(< ${PASSPHRASE}) \ ${vm}.tar.7z | $LOGPARM ) if [ -n $DSTEXT ]; then logline "Copy 7z file to $DSTEXT" cp -f ${DST}/${vm}.tar.7z ${DSTEXT}/ fi done } # # Backup some local directories and copy them to $DSTEXT # function backup_local_dirs() { for dir in ${BACKUPDIRS[@]}; do logline "Backup '${dir}'" dirname=$(basename ${dir}) [[ -f ${DST}/${dirname}.tar.7z ]] && rm -f ${DST}/${dirname}.tar.7z tar cpf - ${dir} 2>/dev/null | \ $ZIP_BIN a -si -m0=lzma2 -mx=3 $ZIPPASS \ ${DST}/${dirname}.tar.7z 2>&1 | $LOGPARM if [ -n "$DSTEXT" ]; then logline "Copy 7z file to $DSTEXT" cp -f ${DST}/${dirname}.tar.7z ${DSTEXT}/ | $LOGPARM fi done } logline "Backup started" status_running for task in ${TASKS[@]}; do eval "${task}" done touch ${DST}/LATEST_${DATE} if [[ -n "$DSTEXT" ]]; then touch ${DSTEXT}/LATEST_${DATE} fi status_ok logline "Backup done" logline "-----------" exit 0 # vim: set ai ts=4 sw=4 et sts=4 ft=sh: checkmk-local/000077500000000000000000000000001336453270100135575ustar00rootroot00000000000000checkmk-local/backup-vms000077500000000000000000000031161336453270100155560ustar00rootroot00000000000000#!/bin/bash CONF=/etc/backup-vms.conf SERVICE="Backup-Libvirt" function error() { echo "2 $SERVICE count=-; $*" exit 0 } function warning() { echo "1 $SERVICE count=-; $*" exit 0; } function ok() { echo "0 $SERVICE count=-; $*" exit 0; } if [ ! -f $CONF ]; then error "Config file $CONF not found" fi if [ ! -r $CONF ]; then error "Config file $CONF not readable" fi source $CONF if [ -z ${DST+x} ]; then error "Destination (Variable DST) in $CONF is not set" fi if [ ! -f ${DST}/STATUS ]; then error "No Statusfile found, backup may never run" fi source ${DST}/STATUS if [[ $STATUS == "FAILED" ]]; then error "Last Backup failed, see log for more details" fi if [[ $STATUS == "RUNNING" ]]; then # Backup is runnig, check how long. if (( $RUNTIME == 0 )); then warning "Backup is running, but runtime is zero. Probably first run" fi if (( (`date +%s` - $STARTED) * 2 > $RUNTIME )); then error "Backup is still running more than double of last time. Probably stuck" fi if (( (`date +%s` - $STARTED) * 12 / 10 > $RUNTIME )); then warning "Backup is still running 20% longer than last time. May be stuck" fi ok "Backup is still running" fi if [[ $STATUS == "OK" ]]; then if (( $STARTED <= $(date -d 'now - 8 days' +%s) )); then error "Last backup form `date --date=@$STARTED`, which is older than 8 days" fi if (( $STARTED <= $(date -d 'now - 4 days' +%s) )); then warning "Last backup form `date --date=@$STARTED`, which is older than 4 days" fi ok "Last backup successful from `date --date=@$STARTED`" fi error "Something went wrong, last status is $STATUS"