Comment 9 for bug 1491782

Let me start by saying this failure is _not_ relates to haproxy. The haproxy user is being created, but that is being done directly to the host outside of haproxy.

What is happening is mysql is not listening or responding on that box. The bootstrap process has failed or it is still syncing data from other boxes with galera. Without being on the box and with no additional information it is hard to tell what is causing the issue, however the message is fairly explicit "unable to connect to database". Since that isn't going through haproxy it truly is unable to connect to the database, i'd start there.

Given the inconsistency of the issue, this is likely a race condition or an improperly cleaned up environment (data container persisted between environment rekicks)