[Pacemaker] resource-discovery question

[David Vossel]

----- Original Message -----
> 12.11.2014 22:57, David Vossel wrote:
> > 
> > 
> > ----- Original Message -----
> >> 12.11.2014 22:04, Vladislav Bogdanov wrote:
> >>> Hi David, all,
> >>>
> >>> I'm trying to get resource-discovery="never" working with cd7c9ab, but
> >>> still
> >>> get "Not installed" probe failures from nodes which does not have
> >>> corresponding resource agents installed.
> >>>
> >>> The only difference in my location constraints comparing to what is
> >>> committed in #589
> >>> is that they are rule-based (to match #kind). Is that supposed to work
> >>> with
> >>> the
> >>> current master or still TBD?
> >>
> >> Yep, after I modified constraint to a rule-less syntax, it works:
> > 
> > ahh, good catch. I'll take a look!
> > 
> >>
> >> <rsc_location id="vlan003-on-cluster-nodes" rsc="vlan003"
> >> score="-INFINITY"
> >> node="rnode001" resource-discovery="never"/>
> >>
> >> But I'd prefer to that killer feature to work with rules too :)
> >> Although resource-discovery="exclusive" with score 0 for multiple nodes
> >> should probably
> >> also work for me, correct?
> > 
> > yep it should.
> > 
> >> I cannot test that on a cluster with one cluster
> >> node and one
> >> remote node.
> > 
> > this feature should work the same with remote nodes and cluster nodes.
> > 
> > I'll get a patch out for the rule issue. I'm also pushing out some
> > documentation
> > for the resource-discovery option. It seems like you've got a good handle
> > on it
> > already though :)
> 
> Oh, I see new pull-request, thank you very much!
> 
> One side question: Is default value for clone-max influenced by
> resource-discovery value(s)?

kind of.

with 'exclusive' if the number of nodes in the exclusive set is smaller
than clone-max, clone-max is effectively reduced to the node count in
the exclusive set.

'never' and 'always' do not directly influence resource placement, only
'exclusive'


> 
> 
> > 
> >>>
> >>> My location constraints look like:
> >>>
> >>>       <rsc_location id="vlan003-on-cluster-nodes" rsc="vlan003"
> >>>       resource-discovery="never">
> >>>         <rule score="-INFINITY" id="vlan003-on-cluster-nodes-rule">
> >>>           <expression attribute="#kind" operation="ne" value="cluster"
> >>>           id="vlan003-on-cluster-nodes-rule-expression"/>
> >>>         </rule>
> >>>       </rsc_location>
> >>>
> >>> Do I miss something?
> >>>
> >>> Best,
> >>> Vladislav
> >>>
> >>> _______________________________________________
> >>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> >>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> >>>
> >>> Project Home: http://www.clusterlabs.org
> >>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> >>> Bugs: http://bugs.clusterlabs.org
> >>>
> >>
> >>
> 
>