Some time ago I wrote a script to manage asynchronous replication links between Percona XtraDB clusters. The original post can be found here. The script worked well with Percona XtraDB Cluster but it wasn’t working well with MariaDB®. Finally, the replication manager works with MariaDB.
First, let’s review the purpose of the script. Managing replication links between Galera based clusters is a tedious task. There are many potential slaves and many potential masters. Furthermore, each replication link must have only a single slave. Just try to imagine how you would maintain the following replication topology:
A complex replication topology
The above topology consists of five clusters and four …[Read more]