Replicate only some tables of MariaDB database I currently have a ready-made structure cluster with MariaDB Galera with two servers that keeps both updated database. However I now have the need to create a new similar structure but with one difference, keeping only a few tables updated in the other server (which will be master also put to another application access). 


How can I do that? 
Can I Keep two masters but with partial synchronization? 
Do I have to use another tool?
In order of your topics:


You can't do that with cluster replication. 
Multi-master is a cluster feature. 
You should try to use the replicate_wild_do_table setting.


Slave threads will be restricted to replicating tables that match the specified wildcard pattern. For example replicate-wild-do-table=foo%.bar% will replicate only updates to tables in all databases that start with foo and whose table names start with bar.