How to Set Up MariaDB Galera Cluster on Ubuntu 18.04, 18.10 and 16.04

This tutorial will be showing you how to set up MariaDB Galera Cluster on Ubuntu 18.04, 18.10 and 16.04 server. MariaDB is an open-source drop-in replacement for MySQL database server.

What is Galera Cluster?

Previously, I talked about master-slave replication in MariaDB. It’s a setup where data modifications on the master server will be replicated to the slave, but changes on the slave will not be replicated to the master. Galera Cluster is a synchronous multi-master cluster for MySQL, MariaDB and Percona database servers to implement a high-performance and high-availability for data refundancy. A multi-master cluster allows read and write to any node in the cluster. Data modifications on any node is replicated to all other nodes.

Read full tutorial here: https://www.linuxbabe.com/mariadb/galera-cluster-ubuntu-18-04-18-10-16-04