galera

Helsinki, Finnland, Uster, Schweiz – 18. Februar 2012 – Codership, Anbieter des Galera Clusters für MySQL, und FromDual, eine MySQL Beratungsfirma, kündigen eine Zusammenarbeit bei der Verbreitung von Galera Cluster Technologie und dazugehörigen Support- und Beratungs-Dienstleistungen für Galera Anwender an. Galera Cluster ist ein synchroner, echter Multi-Master Replikations-Cluster für MySQL, welcher die weit verbreitete InnoDB Storage Engine nutzt.

In my set-ups I have different MySQL versions (MySQL 5.0, 5.1, 5.5 and 5.6, Percona Server 13.1 and 24.0, MariaDB 5.2.10, 5.3.3, Galera 1.0, 1.1 and 2.0) running in parallel at the same time.

A few days ago Codership announced their new version Galera v1.1 - synchronous Replication Cluster for MySQL. Before we look at the new feature of Rolling Online Schema Upgrade (OSU) we have a look at how to upgrade to the new Galera release.

On December 2^nd 2011 FromDual released the new version v0.7.2 of its Performance Monitor for MySQL. The new version can be downloaded from here.

The Performance Monitor for MySQL is an agent which is hooked into the agent of the well known Monitoring solution called Zabbix. Zabbix is an integrated Enterprise Monitoring solution which can produce performance graphs and alerting.

The changes in the new release are:

Introduction

Galera is a synchronous Multi-Master Replication for MySQL. It is therefore in competition with several other MySQL architectures:

Introduction

MySQL/Galera synchronous Multi-Master Replication consists of 2 parts: