Severalnines Blog
The automation and management blog for open source databases

Upcoming Webinar: Zero Downtime Schema Changes in Galera Cluster

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Database schema changes are usually not popular among DBAs or sysadmins, not when you are operating a cluster and cannot afford to switch off the service during a maintenance window. There are different ways to perform schema changes, some procedures being more complicated than others. We invited Seppo from the Codership team to tell us about the options. If you’d like to learn more, please register for our new webinar.


Webinar: Galera Cluster Best Practices - Zero Downtime Schema Changes

Tuesday, December 3rd 2013

Register now - Europe/MEA/APAC

Register now - North America/LatAm

Galera Cluster is great at making your MySQL database highly available, but are you concerned about schema changes? Is an ALTER TABLE statement something that requires a lot of advance scheduling? What is the impact on your database uptime?

This is a common question, since ALTER operations in MySQL usually cause the table to be locked and rebuilt – which can potentially be disruptive to your live applications. Fortunately, Galera Cluster has mechanisms to replicate DDL across its nodes.

In this webinar, you will learn about the following:

  • How to perform Zero Downtime Schema Changes
  • 2 main methods: TOI and RSU
  • Total Order Isolation: predictability and consistency
  • Rolling Schema Upgrades
  • pt-online-schema-change
  • Schema synchronization with re-joining nodes
  • Recommended procedures
  • Common pitfalls/user errors

Join this webinar and learn how to do schema changes in your cluster with maximum uptime and full data consistency. 



Tuesday, December 3rd at 10:00 CEST (Germany, France, Sweden)

Register Now

North America/LatAm

Tuesday, December 3rd at 9:00 Pacific Time (US)/12:00 Eastern Time (US)

Register Now


Seppo Jaakola, CEO Codership


Galera Cluster for MySQL is a true multi-master MySQL replication plugin, and has been proven in mission-critical infrastructures of companies like Ping Identity, AVG Technologies, KPN and HP Cloud DNS. 


Setting up, maintaining and operating a database cluster can be tricky. ClusterControl gives you the power to deploy, manage, monitor and scale entire clusters efficiently and reliably. ClusterControl supports all three flavours of Galera cluster (Codership, Percona XtraDB Cluster and MariaDB Cluster).

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