There are many guides about how to install and configure popular applications on Linux servers, but not much on how to remove them.
I found this out when I needed to install a MariaDB Galera cluster on a server which already had a stand-alone MariaDB server installed. Having the older version of MariaDB installed (and the older repository in the source list) meant all of the guides I was following didn’t work due to conflicting packages.
This guide will explain how to completely remove MariaDB from your system (including any databases). Read more