102 lines
3.5 KiB
Bash
Executable File
102 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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#set -euo pipefail
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#trap 's=$?; echo >&2 "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR
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TARGET=/yunohost-backups
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HOST=yunohost
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TODAY_DATE=`date '+%F'`
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LOGFILE=${TARGET}/$TODAY_DATE.$$.log
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ERR=0
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NUMRETAINBACKUPS=10
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echo "yunohost backup begin:" >$LOGFILE
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date >>$LOGFILE
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for i in 1 2 3
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do
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NUMBACKUPS=`ssh ${HOST} sudo yunohost backup list | grep -- '-' | wc -l`
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ERR=$?
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if [ ${ERR} == 0 ]
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then
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echo number of backups on yunohost ${NUMBACKUPS} >>$LOGFILE
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echo number of backups to keep ${NUMRETAINBACKUPS} >>$LOGFILE
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else
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echo yunohost could not list backups >>$LOGFILE
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date >>$LOGFILE
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exit 1
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fi
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if [ ${NUMBACKUPS} -gt ${NUMRETAINBACKUPS} ]
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then
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BACKTODEL=`ssh ${HOST} sudo yunohost backup list | grep -- '-' | head -1 | cut -d" " -f4`
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echo 'the following backup will be deleted:' >>$LOGFILE 2>&1
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ssh ${HOST} sudo yunohost backup info ${BACKTODEL} >>$LOGFILE 2>&1
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ssh ${HOST} "sudo yunohost backup delete ${BACKTODEL}" >>$LOGFILE 2>&1
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fi
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done
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ssh ${HOST} sudo yunohost backup create >>$LOGFILE 2>&1
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ERR=$?
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if [ ${ERR} == 0 ]
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then
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echo yunohost backup successfully created >>$LOGFILE
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else
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echo yunohost backup did NOT complete >>$LOGFILE
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fi
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echo "yunohost backup ended:" >>$LOGFILE
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date >>$LOGFILE
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BACKUPFILE=`ssh ${HOST} sudo yunohost backup list --with-info -H | grep -A 3 $TODAY_DATE | grep 'path:' | cut -d":" -f2 | tr -d " " | tail -1`
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scp ${HOST}:${BACKUPFILE} ${TARGET} && echo ${BACKUPFILE} successfully copied to ${TARGET}! >>$LOGFILE 2>&1
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ls -lisah ${TARGET}/`basename ${BACKUPFILE}` >>$LOGFILE
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gzip -9 ${TARGET}/`basename ${BACKUPFILE}` >>$LOGFILE 2>&1
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# algo to create the "keep"-array copied from https://serverfault.com/questions/575163/how-to-keep-daily-backups-for-a-week-weekly-for-a-month-monthly-for-a-year-a
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# it keeps 8 daily backups and 5 weekly (every sunday) backups
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# in addition 13 monthly backups (first sunday of every month) and 6 yearly backups (first sunday of every year)
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cd ${TARGET}
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# keep 8 daily backups
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for i in {0..7}; do ((keep[$(date +%Y%m%d -d "-$i day")]++)); done
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# keep 5 weekly backups
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for i in {0..4}; do ((keep[$(date +%Y%m%d -d "sunday-$((i+1)) week")]++)); done
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# keep 13 monthly backups
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for i in {0..12}; do
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DW=$(($(date +%-W)-$(date -d $(date -d "$(date +%Y-%m-15) -$i month" +%Y-%m-01) +%-W)))
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for (( AY=$(date -d "$(date +%Y-%m-15) -$i month" +%Y); AY < $(date +%Y); AY++ )); do
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((DW+=$(date -d $AY-12-31 +%W)))
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done
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((keep[$(date +%Y%m%d -d "sunday-$DW weeks")]++))
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done
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# keep 6 yearly backups
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for i in {0..5}; do
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DW=$(date +%-W)
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for (( AY=$(($(date +%Y)-i)); AY < $(date +%Y); AY++ )); do
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((DW+=$(date -d $AY-12-31 +%W)))
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done
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((keep[$(date +%Y%m%d -d "sunday-$DW weeks")]++))
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done
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#echo ${!keep[@]}
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echo space in filesys of ${TARGET} before pruning backups >>$LOGFILE 2>&1
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df -h ${TARGET} >>$LOGFILE 2>&1
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for i in *.tar.gz
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do
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DATE=`echo $i | cut -c1-8`
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echo ${!keep[@]} | grep $DATE >/dev/null
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if [ $? -ne 0 ]
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then
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echo pwd `pwd`
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echo deleting $DATE >>$LOGFILE 2>&1
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rm ${DATE}*.tar.* >>$LOGFILE 2>&1
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rm ${DATE}*.log.* >>$LOGFILE 2>&1
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fi
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done
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echo space in filesys of ${TARGET} after pruning backups >>$LOGFILE 2>&1
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df -h ${TARGET} >>$LOGFILE 2>&1
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echo "$0 on `hostname` ended:" >>$LOGFILE
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date >>$LOGFILE
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# Achtung, hier wird es kompliziert :) nach diesem Kommando keine Umleitung in $LOGFILE mehr
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mv ${LOGFILE} ${TARGET}/`basename ${BACKUPFILE} .tar`.log
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gzip -9 ${TARGET}/`basename ${BACKUPFILE} .tar`.log
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