http://docs.rancher.com/rancher/installing-rancher/installing-server/multi-nodes/ mentions that before GA, standing up a HA Rancher Server will be made easier. This Rancher/Server Outage & Reconnection suggests GA is coming at the end of this month and there are still plans to making standing up easier. This https://groups.google.com/forum/#!topic/rancherio/lDr2KCvR88g suggests that MySQL and Postgres are interchangeable. Is this true? If we have to implement HA for the Rancher Server database ourselves, I would prefer to use Postgres because we have something setup for that.