the "WSREP" error is something you never have to worry about with Galera assuming you are correctly deploying beneath a proxy server like HAProxy that handles t

the "WSREP" error is something you never have to worry about with Galera assuming you are correctly deploying beneath a proxy server like HAProxy that handles this aspect for you. The proxy server is set up to only provide nodes that are available. We also run some applications in "single-node" mode where HAProxy routes all connections to one node at a time - but if a node goes down it switches the app to another one. Hence the whole point of HA.