[openstack-dev] [tripleo] HA with only one node.

Dan Prince dprince at redhat.com
Sat Aug 6 19:20:09 UTC 2016

On Sat, 2016-08-06 at 13:21 -0400, Adam Young wrote:
> As I try to debug Federaion problems, I am often finding I have to
> check 
> three nodes to see where the actual requrest was processed. However,
> If 
> I close down to of the controller nodes in Nova, the whole thing just
> fails.
> So, while that in it self is a problem, what I would like to be able
> to 
> do in development is have HA running, but with only a single
> controller 
> node answering requests.  How do I do that?

I have a $HOME/custom.yaml environment file which contains this:

  ControllerCount: 1

If you do something similar and then include that environment in your
--environments list you should end up with just a single controller.

Do this in addition to using environments/puppet-pacemaker.yaml and you
should have "single node HA" (aka pacemaker on a single controller).


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