We all care of our stuff and need to back it up. I recently set up a system to automatically do it. I use crontab to perform backups as long as I want.
It is divided in two parts. The first one is with rsync to do an incremental update. The second one is a backup with gzip compression to save and eventually export to another server.
Only the second part send an email to recap because the rsync part can be performed many times a day if you’d like.
In the following case, make sure you create folders (incremental, weekly and monthly) and gave the appropriate rights to your backup folder (i.e. /backup/content) which are “chmod -Rf 0600 /backup/content”. You don’t want anyone to access it except root.
The use of this script is very simple:
# Rsync backup sh the_script.sh sync # Full backup sh the_script.sh save
My crontab is:
# Once every week, on monday at 4:30, I save 30 4 * * mon sh script.sh save # Three times a day, every 8h, I sync 0 */8 * * * sh script.sh sync
The script is below:
#!/bin/bash # Shell script to backup content # Written by Titouan13 # Main directory where backup will be stored MBD="/backup/content" # Directory for incremental backups INC="$MBD/incremental" # Folder to backup SRC="/your/path/" # Get data in dd-mm-yyyy format NOW="$(date +"%d-%m-%Y")" # File name FILE="your_website" # RSYNC on both folders to update the content if [ "$1" == "sync" ] ; then echo "RSYNC backup" rsync -avh --delete $SRC $INC fi # Full backup with gzip files and sending email report if [ "$1" == "save" ] ; then start=`date +%s%3N` NB_FILES="$(ls -1 $MBD/weekly | wc -l)" # Perform one backup every four week and delete older weekly backups if [ "$NB_FILES" > "3" ] ; then echo "4 weeks backup" >> /tmp/mail_report.log tar -cpzPf $MBD/monthly/$FILE.$NOW.tar.gz $INC >> /tmp/mail_report.log rm $MBD/weekly/* else # Get the content and compress it every week tar -cpzPf $MBD/weekly/$FILE.$NOW.tar.gz $INC >> /tmp/mail_report.log fi end=`date +%s%3N` runtime=$((end-start)) echo Runtime: $runtime"ms" >> /tmp/mail_report.log mail -s "Backup content "$NOW firstname.lastname@example.org < /tmp/mail_report.log fi