openstack team mailing list archive

[ikke <ikke@xxxxxx>]

On Fri, Apr 13, 2012 at 5:54 PM, Martin Gerhard Loschwitz
<martin.loschwitz@xxxxxxxxxxx> wrote:
> STONITH events from within virtual machines. I have something cooking here
> using the latest version of Pacemaker; should this turn out to work, it
> would make many things a lot easier. I'll elaborate a little bit more on
> this once I have it working the way I want it.
>
> Concerning the general subject of virtual machines (and clustered VMs for
> that matter) within OpenStack, I think there is some stuff missing in Nova
> that would be necessary (granted -- in one way or another, it would be
> possible to make Pacemaker deal with VMs that have failed within Nova, but
> in my eyes, that'd be crazy). Nova knows what VMs are supposed to be there
> and Nova can find out which VMs are in fact running and which are not, so
> I think Nova should make sure that those VMs that are supposed to run are,
> well, running :)
>
> Best regards
> Martin

Good to hear, I'm looking forward hearing more of you project. It
sounds like it would be plug-in to the earlier mentioned project:

http://wiki.openstack.org/ResourceMonitorAlertsandNotifications

You are right, one cannot have too many "heads" making the decisions
about HA in the cluster, Nova should handle it, or let someone else to
do it and let go. But isn't that exactly what nova is there for, so
it's nova's job.

BR,
it