Automate MySQL Database Backup via Cronjob

Automating a MySQL Database backup in cPanel will take a few minutes of work, but only needs to be set up once.

The backup cron will continue to create backup files until your disk space is completely filled up.
In order to prevent this, you will create a logrotate file as well as another cronjob entry to automatically rotate out the older backups, to keep disk space down.

Create the Backup cron job in cPanel

You will need to know your Database username and database password in order to configure the backup.

1) Log into your cPanel

2) Go to Advanced -> Cron Jobs

3) Enter the email you wish to email the results of the cron job to.

4) Scroll down a bit, and either select a common setting (Once a day, once a week, etc) from the drop down. or enter a custom entry for days, weeks, months, etc.



5) For the command to run, enter the following command. Replace CPANELUSERNAME with your cpanel username. Replace DBUSERNAME with your database username. Replace PASSWORD with the database password, and CPANELUSERNAME with your cPanel username.
<syntaxhighlight lang="bash"> date=`date -I`; /usr/bin/mysqldump -uDBUSERNAME -pPASSWORD dbname > /home/CPANELUSERNAME/dbname$date.sql </syntaxhighlight>
For Example, cPanel username is example, database name is mydatabase, and database password is mypassword <syntaxhighlight lang="bash"> date=`date -I`; /usr/bin/mysqldump -umyusername -pmypassword mydatabase > /home/example/mydatabase_$date.sql </syntaxhighlight>
This will create a sql file in your /home/cpanelusername directory with a name similar to mydatabase_20180101.sql.

6) Click the blue "Add New Cron Job" button when done.

Create the Log Rotation config file

You will need to create a logrotate directory under your home directory to enter the directives you will need. Here is a sample config:
<syntaxhighlight lang="bash"> /home/CPANELUSER/logrotate/my.conf { daily rotate 3 compress delaycompress } </syntaxhighlight>