MariaDB Galera Cluster is a separate product from MariaDB. So, installing it is similar, but not quite the same as installing MariaDB. In particular, the package names for MariaDB's server components are different and there is an extra galera package that needs to be installed.
For this recipe, we'll assume that we have three servers named db01, db02, and db03, with IP addresses 192.168.1.101, 192.168.1.102, and 192.168.1.103, respectively. We'll further assume that they are all running fresh installs of Ubuntu 12.04 LTS.
On all the three hosts, install MariaDB Galera Cluster using the following commands:
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943db sudo add-apt-repository 'deb http://ftp.osuosl.org/pub/mariadb/repo/10.0/ubuntu precise main' sudo apt-get update sudo apt-get install mariadb-galera-server
On all the three hosts, stop MariaDB using the following command so that we can add modify...