edx/configuration — pull request #1660 by carsongee (2014-10-23 18:05:10+00:00)
Title: Add MariaDB Role (with galera clustering)

This primarily adds a new role for installing MariaDB for non-RDS instances and add active/active galera clustering as an option for running a load balanced and HA mysql cluster. It borrowed quite a bit from edxlocal for user creation.

In addition to the new role I also made a cluster vagrant that stands up three boxes and installs all our cluster capable roles. If you guys want me to split this in two, that is fine with me, but I used the cluster vagrant to help build the role so it ended up on this branch.