53 lines
1.8 KiB
Markdown
53 lines
1.8 KiB
Markdown
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---
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title: "MySQL backup script"
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date: 2016-03-13T00:00:00+01:00
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draft: false
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share: false
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---
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I wrote a MySQL database backup script a while back. I known they are more than enough of them already floating around the internet, but hey, I figured I'd share it here anyway.
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## The script
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For the script to work, you'll need to edit a few variable to match your configuration.
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- `BACKUPDIR` is the path of the directory where you want your backups to be stored.
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- `BACKUPUSR` is the user that will connect to MySQL to dump the databases. It should have access to all you databases without needing a password.
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- `EXCLUDELIST` is a list of databases that should not be backed-up. Leaving it as is is probably fine.
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```bash
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#!/bin/bash
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BACKUPDIR="/home/user/backup"
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BACKUPUSR="user"
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EXCLUDELIST="^Databases$|^information_schema$|^mysql$|^performance_schema$"
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sqlbk() {
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for each in $(mysqlshow | awk '/[[:alnum:]]/{print $2}'); do
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if [[ $each =~ $EXCLUDELIST ]]; then
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true
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else
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mysqldump $each | bzip2 > ${BACKUPDIR}/${each}.sql.bz2
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chown ${BACKUPUSR}: ${BACKUPDIR}/${each}.sql.bz2 && chmod 600 ${BACKUPDIR}/${each}.sql.bz2
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fi
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done
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}
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[[ -e /etc/init.d/mysql ]] && sqlbk
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```
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I personnaly have this script running once a week, in my user's personnal crontab (editable using the `crontab -e` command) :
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```
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## WEEKLY DATABASE BACKUP
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@weekly /home/user/bin/backupdb
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```
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# Conclusion
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You've probably noticed that the script erases the previous backup when a new one is made.
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I don't need to keep multiple versions of the same database backup on my servers because they are all saved remotely on a daily basis using [Rsnapshot](http://rsnapshot.org/). I'll probably write an article on the subject in the future.
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As usual, feedback is always appreciated !
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