How to Setup HA for RHV-M pt3

Hi Folks.. the last time I left off, we had just finished setting up the initial pieces for hosted engine (RHEL configuration) in order to provide HA for RHV-M. Today we’re going to add an additional host and test things out.

Let’s get going!Once hosted engine is setup, adding another RHEL host to the configuration is almost identical to a standard configuration. There is only 1 additional step that involves ensuring that the HA pieces specific to hosted engine get installed along with the RHV packages.

The workflow itself is simple:

  1. Deploy a RHEL host, subscribe it to Red Hat CDN or Satellite and update it
  2. Add the Cockpit package and enable it (we won’t highlight that here, but you can see it in the previous post)
  3. Log into RHV-M, go to the “Hosts” tab, select “New”, fill in the relevant information, be sure to visit the “Hosted Engine” tab and select the “deploy” radio button.
  4. Once it finishes installing, give everything a minute or so to sync up, then test!

As usual, I recorded a walk through so that things are more clear. I sped things up significantly as my home lab is ~very~ slow.. Maybe I’ll get new equipment for Christmas. 🙂

Once the host is added, we can live migrate the engine (RHV-M) at will. And more importantly the engine will restart automatically if the host it’s running on fails for any reason… and we’ll see that in the demo.

Let’s check out the demo!

(best viewed in full screen)

Hopefully you see that it’s straightforward to add and test… I’ll follow this up with some maintenance items for the special HA mode of the hosts..

hope this helps,

Captain KVM

Agree? Disagree? Something to add to the conversation?