Galera

April 1, 2015

Upgrading MariaDB Galera Cluster 5.5 to 10.0

Upgrading a running MariaDB Galera Cluster from 5.5 (previous stable) to 10.0 (stable) is a question which comes up frequently with Remote DBA customers. Although a standard migration from 5.5 to 10.0 is well covered in the Knowledge Base, Galera Cluster upgrades haven’t been really documented in detail now. This howto will cover upgrades on CentOS or RHEL 6 but a similar logic can be applied to Ubuntu/Debian as well.

Read More

March 31, 2015

In the middle of the MariaDB Europe Roadshow

Last week we continued the MariaDB Roadshow in Europe and visited Paris, Brussels and Amsterdam. We have now completed 5 out of 10 events from this tour. The interest in this roadshow is overwhelming - in Amsterdam we even needed to put extra chairs into the room! So far attendees of the roadshow series especially liked topics around MariaDB MaxScale, security features in MariaDB as well as the MariaDB roadmap session. Monty was among the speakers in Helsinki and Amsterdam.

Read More

March 9, 2015

Using pt-table-checksum with MariaDB Galera

A rapidly increasing number of large, high traffic sites are using MariaDB Galera for their database needs. This makes sense since it works so well. Administrators will connect asynchronous slaves to Galera for reporting, back-ups and disaster recovery.

MariaDB Galera is a very dependable system, involving the coupling of MariaDB with Galera. Nevertheless, Galera administrators need to check regularly the consistency of their slaves. An excellent tool for doing this is the pt-table-checksum. Read this blog for more about using it.

Read More

February 24, 2015

MariaDB Europe Roadshow 2015 starts next week

Team MariaDB is touring across several European regions again with the theme "Scaling at its Best!". Beside product pitches our technical experts will help you understand how to take advantage of the wide range of new features and enhancements available now in MariaDB 10, MaxScale and other MariaDB solutions.

Read More

October 31, 2014

Replace Oracle RAC with MariaDB Galera Cluster?

If you want to avoid downtimes in your business, High Availabilty (HA) is a strong requirement which, by definition, makes it possible to access your data all the time without losing (any) data. In this blog we compare two alternatives: Oracle RAC and MariaDB Galera Cluster. 

Read More

September 14, 2014

Deciphering Galera Version Numbers

It's important to understand which Galera version you are running, for proper compatibility of MariaDB with the Galera replication library, and also to check which featureset you have access to. However, Galera version numbering can be difficult to decipher because of its complex scheme.

Version numbering in Galera consists of three different components:

Read More

August 28, 2014

How to Install MaxScale and MariaDB 5.5 Galera cluster with Severalnines Cluster Control on Amazon Virtual Private Cloud

This blog post will show how to Install MaxScale and MariaDB 5.5 Galera Cluster with Severalnines Cluster Control on Amazon Virtual Private Cloud.

The steps in this blog:

  1. How to setup Amazon Virtual Private Cloud
  2. How to prepare the MariaDB Galera Cluster nodes and to set the subnet routings
  3. How to install MariaDB Galera 3 node cluster in the private subnet of an AWS VPC using Severalnines Cluster Control
  4. How to build MaxScale from git source on the Cluster Control node

Read More