You are here

cluster

MariaDB, Galera and MySQL Support

FromDual is a support partner of MariaDB plc, Codership Oy and Oracle Corporation. This gives us the opportunity to offer you customized enterprise support subscriptions for your mission-critical MariaDB, Galera or MySQL databases for all three vendors.

English

Active/active failover cluster with MySQL Replication

Electing a slave as new master and aligning the other slaves to the new master

In a simple MySQL Replication set-up you have high-availability (HA) on the read side (r). But for the master which covers all the writes (w) and the time critical read (rt) there is no HA implemented. For some situations this can be OK. For example if you have rarely writes or if you can wait until a new Master is set up.

But in other cases you need a fast failover to a new master.

MySQL Cluster restore

Recently the question came up if it is faster to restore a MySQL cluster when all nodes are up or only ONE node from each node group during restore.

The answer from our gurus was: All nodes up during restore! I wanted to find out why. So I set up the following cluster and started to measure:

MySQL Cluster set up

Cluster set-up

MySQL Active - Active Clustering

It is possible to use an active - active shared-disk cluster in MySQL in some cases. For doing this you have to fulfill the following requirements:

Pages

Subscribe to RSS - cluster