forked from ScoDoc/DocScoDoc
78 lines
2.4 KiB
Bash
78 lines
2.4 KiB
Bash
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#!/bin/bash
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# Backup rotation
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# Usage example: backup_rotation.sh /var/lib/postgresql/BACKUP-SCOGEII
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#
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# This script is designed to run each hour
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#
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# E. Viennet 2014, loosely inspired by Julius Zaromskis,
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# http://nicaw.wordpress.com/2013/04/18/bash-backup-rotation-script/
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# Storage folder where to move backup files
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# Must contain backup.monthly backup.weekly backup.daily backup.hourly folders
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storage="$1"
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NB_HOURLY=48 # nb de sauvegardes horaires a conserver (1 par heure)
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NB_DAILY=40 # nb de sauvegardes quotidiennes a conserver
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NB_WEEKLY=30 # nombre de sauvegardes hebdomadaires a conserver
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NB_MONTHLY=200 # nombre de sauvegardes mensuelles a conserver
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# Work in backup directory:
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cd $storage
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# Source folder where files are backed
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source="incoming"
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# Destination file names
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date_daily=$(date -u +"%Y-%m-%d")
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date_hourly=$(date -u +"%Y-%m-%dT%H:%M")
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# Get current month and week day number
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month_day=$(date -u +"%d")
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week_day=$(date -u +"%u")
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hour=$(date -u +"%H")
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# Optional check if source files exist. Email if failed.
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#if [ ! -f $source/archive.tgz ]; then
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#ls -l $source/ | mail your@email.com -s "[backup script] Daily backup failed! Please check for missing files."
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#fi
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# We take files from source folder and move them to
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# the appropriate destination folder:
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# On first month day do (once)
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if [ "$month_day" -eq 1 ] && [ ! -e backup.monthly/$date_daily ]; then
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destination=backup.monthly/$date_daily
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else
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# On sunday do (once)
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if [ "$week_day" -eq 7 ] && [ ! -e backup.weekly/$date_daily ]; then
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destination=backup.weekly/$date_daily
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else
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if [ "$hour" -eq 0 ] ; then
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# On any regular day just after midnight do
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destination=backup.daily/$date_daily
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else
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# Each hour do:
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destination=backup.hourly/$date_hourly
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fi
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fi
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fi
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# Move the files
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mkdir $destination
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mv $source/* $destination
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# hourly - keep NB_HOURLY
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m=$(($NB_HOURLY * 60))
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find ./backup.hourly -maxdepth 1 -mmin +"$m" -type d -exec /bin/rm -r {} \;
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# daily - keep for NB_DAILY days
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find ./backup.daily/ -maxdepth 1 -mtime +"$NB_DAILY" -type d -exec /bin/rm -r {} \;
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# weekly - keep for NB_WEEKLY days
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d=$(($NB_WEEKLY * 7))
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find ./backup.weekly/ -maxdepth 1 -mtime +"$d" -type d -exec /bin/rm -r {} \;
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# monthly - keep for NB_MONTHLY days (approx: 30 days/month)
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d=$(($NB_MONTHLY * 30))
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find ./backup.monthly/ -maxdepth 1 -mtime +"$d" -type d -exec /bin/rm -r {} \;
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