Last night I tried something that felt a little daring at first: migrating from MySQL 5.5 to MariaDB 10 on a production server.

Having read at length about the advantages of MariaDB and Percona in scaling at higher processor core counts and multiple concurrent database accesses, I wanted to try it out for myself. I run applications that do a lot of read/write tasks, updating of table data and most of these talks run concurrently. Well, they do basically everything that's expected a database should do.

Here you can take a look at some (older) performance graphs, comparing MySQL, MariaDB and Percona.

MariaDB bills itself as a binary drop in replacement for MySQL, so here's how to do it on a machine running Debian Wheezy.

Shut down MySQL server:

service mysql stop

Make a backup of your MySQL folder and configuration:

cp -Rf /var/lib/mysql /var/lib/mysql-old 
cp /etc/mysql/my.cnf /etc/mysql/my.cnf-old

Choose your distro and MariaDB version here to get instructions how to add the MariaDB repository.

For Wheezy, you do:

apt-get install python-software-properties
apt-key adv --recv-keys --keyserver 0xcbcb082a1bb943db
add-apt-repository 'deb wheezy main'

Followed by:

apt-get update
apt-get install mariadb-server

That's it. MariaDB will automatically uninstall MySQL 5.5, then installs itself and converts any tables that might need converting. It takes just a couple of minutes and since then my MySQL-based applications run snappier than before under load, especially when using InnoDB.

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