[Pacemaker] Moving multi-state resources

[pavan tc]

On Wed, Dec 12, 2012 at 6:46 PM, Dejan Muhamedagic <dejanmm at fastmail.fm>wrote:

> Hi,
>
> On Wed, Dec 12, 2012 at 03:50:01PM +0530, pavan tc wrote:
> > Hi,
> >
> > My requirement was to do some administration on one of the nodes where a
> > 2-node multi-state resource was running.
> > To effect a resource instance stoppage on one of the nodes, I added a
> > resource constraint as below:
> >
> > crm configure location ms_stop_res_on_node <ms_resource> rule -inf:
> \#uname
> > eq `hostname`
> >
> > The resource cleanly moved over to the other node. Incidentally, the
> > resource was the master on this node
> > and was successfully moved to a master state on the other node too.
> > Now, I want to bring the resource back onto the original node.
> >
> > But the above resource constraint seems to have a persistent behaviour.
> > crm resource unmigrate <ms_resource> does not seem to undo the effects of
> > the constraint addition.
>
> You can try to remove your constraint:
>
> crm configure delete ms_stop_res_on_node
>
>
That did the job. Thanks a ton!

Pavan


> migrate/unmigrate generate/remove special constraints.
>
> Thanks,
>
> Dejan
>
> >
> > I think the location constraint is preventing the resource from starting
> on
> > the original node.
> > How do I delete this location constraint now?
> >
> > Is there a more standard way of doing such administrative tasks? The
> > requirement is that I do not want to offline the
> > entire node while doing the administration but rather would want to stop
> > only the resource instance, do the admin work
> > and restart the resource instance on the node.
> >
> > Thanks,
> > Pavan
>
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