Server Management has a lot of factors. Administrators need to have a solid understand of the Linux operating system, permissions, the file system, drives, users, etc. in order to be able to have a safe and secure system.
With Oracle's fairly recent acquisition of MySQL, a lot of people are looking to move away from MySQL in fear of Oracle changing the licensing, which could force you to change database backends. As such, today we'll migrate from MySQL to MariaDB, which is a popular alternative to MySQL. MariaDB was initially forked in January of 2009. We can make this transition quickly, but not without some downtime, as we can't have both databases working on the same files simultaneously. These instructions are good for all popular distributions of GNU/Linux, however Debian 7 (Wheezy) will be used in the reference code shown.