Sorry for the double post. I have currently posted on DB stackexchange https://dba.stackexchange.com/questions/274545/percona-xtradb-cluster-5-7-solution-on-aws-and-on-premise-not-all-nodes-are-con and looking at the number of views etc it looks like I should have posted it here.
For a little context on those here. The cluster seems to be fine and working well but , the “last” one doesn’t seem to be used at all by anything and I found that a bit odd so I am asking for a little guidance and help.
Thanks in advance.