Go to Servers | MySQL Database Server | Click on database being backup.Click Backup Database button. Choose location where to put backup /backup/name-of-database. Leave other backup options to use default setting unless you know exactly what you want set. Click Backup Now. As you can see from this page you could even set a scheduled backup!
When the backup runs it outputs the following message.
Restoring Joomla’s MySQL database can be done using the same webmin module.Ã‚Â Choose database to be restored, Click Execute SQL, Run SQL from file. Browse to location of your saved mysql database. Click Execute.
Webmin outputs restore process.
When you’re done saving your database you could proceed with uploading the latest Joomla security patch using this guide.
If you use Virtualmin to manage your hosted website you’re in luck. The backup and restore function does an excellent job of backing up a website root directory including the database being used. I have successfully used it to recover a damaged Joomla site.