On Tue, 29 May 2018 14:23:31 +0200 Salvatore D'angelo <sasadang...@gmail.com> wrote: ... > 2. I read some documentation about upgrade and since we want 0 ms downtime I > think the Rolling Upgrade (node by node) is the better approach.
The 0ms upgrade is almost impossible. At some point, you will have to move the master somewhere else. Unless you have some session management that are able to wait for the current sessions to finish, then hold the incoming sessions while you are moving the master, you will have downtime and/or xact rollback. Good luck anyway :) -- Jehan-Guillaume de Rorthais Dalibo _______________________________________________ Users mailing list: Users@clusterlabs.org https://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
