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MariaDB MaxScale Load Balancer with Master/Master Replication

For this how-to we were working with a MariaDB 10.6.5 database server and the newest MariaDB MaxScale 6.3.0 (aka 2.6) load balancer/proxy.

As a starting point we had a working MariaDB Master/Master replication with one active Master (Ma) and one passive Master (Mp). Whereas the passive Master was set to read_only. As a replication user we used the user replication.

MariaDB Master/Master GTID based Replication with keepalived VIP

Important: FromDual does NOT recommend to use an automated VIP failover technology as described below for a MariaDB/MySQL Master/Master Replication. In such a topology we recommend a manual VIP failover with prepared scripts!

Some of our customers still want to have old-style MariaDB Master/Master Replication Clusters. Time goes by, new technologies appear but some old stuff still remains.

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