Replication between two clusters

Hello,

Please advise how to configure replication between two independent clusters?
I have two fully operatable pxc cluster with 3 nodes in each.
Each cluster have its own and different databases and configured inner replication (sst xtrabackup).
I need to replicate only one database from pxc1 to pxc2.
Is it possible to achieve this type of replication?

Thanks.

Yes, you can do this. You need to set up traditional async replication between two nodes, one in each cluster. Use replication filtering (ie: replicate-do-db) to limit which databases replicate to the other cluster.