In this blog, well look at how to quickly add a node to an InnoDB Cluster or Group Replication using Percona XtraBackup. Adding nodes to a Group Replication cluster can be easy (documented here), but it only works if the existing nodes have retained all the binary logs since the creation of the cluster. Obviously, [&]

https://www.percona.com/blog/2018/11/05/how-to-quickly-add-a-node-to-an-innodb-cluster-or-group-replication/