redhat icehouse controller HA

Hi guys

i'm starting a new deployment with redhat 7 and openstack icehouse , this is going to be an exercise for learning , i have a full lab ready. I'm was whiteboarding the architecture and one of the key things is to have openstack controllers highly available (at least 2). I couldnt find any documentation , something deep dive , step by step. There are only superficial articles out there that cant make me understand the deployment steps itslef.

http://docs.openstack.org/high-availability-guide/content/ (doenst help at all)

anybody could help me with that?

regards