I am running the following cluster:
Node A and C have XtraDB-Cluster-Shared 5.6.20-25.7.888
Node B has XtraDB-Cluster-Shared 5.6.15-25.5.759
If I test failover (shut down) with nodes A or C (shut the node down … add a record … then restart the node) everything replicates as expected.
If I test failover (shutdown) with node B I immediately get a too many connections error and I must clear hosts before I can continue.
The question here is … would this be because node b is an earlier version of XtraDB-Cluster-Shared?
Should I upgrade Node B so it is running the same version as the other two?
When upgrading should I uninstall the current artifact or can I just upgrade to 5.6.20-25 ?