[ClusterLabs] ocf:pacemaker:ping works strange

[Ken Gaillot]

On Mon, 2023-12-11 at 21:05 +0300, Artem wrote:
> Hi Ken,
> 
> On Mon, 11 Dec 2023 at 19:00, Ken Gaillot <kgaillot at redhat.com>
> wrote:
> > > Question #2) I shut lustre3 VM down and leave it like that
> > How did you shut it down? Outside cluster control, or with
> > something
> > like pcs resource disable?
> > 
> 
> I did it outside of the cluster to simulate a failure. I turned off
> this VM from vCenter. Cluster is unaware of anything behind OS.

In that case check pacemaker.log for messages around the time of the
failure. They should tell you what error originally occurred and why
the cluster is blocked on it.

>  
> > >   * FAKE3       (ocf::pacemaker:Dummy):  Stopped
> > >   * FAKE4       (ocf::pacemaker:Dummy):  Started lustre4
> > >   * Clone Set: ping-clone [ping]:
> > >     * Started: [ lustre-mds1 lustre-mds2 lustre-mgs lustre1
> > lustre2
> > > lustre4 ] << lustre3 missing
> > > OK for now
> > > VM boots up. pcs status: 
> > >   * FAKE3       (ocf::pacemaker:Dummy):  FAILED (blocked) [
> > lustre3
> > > lustre4 ]  << what is it?
> > >   * Clone Set: ping-clone [ping]:
> > >     * ping      (ocf::pacemaker:ping):   FAILED lustre3
> > (blocked)   
> > > << why not started?
> > >     * Started: [ lustre-mds1 lustre-mds2 lustre-mgs lustre1
> > lustre2
> > > lustre4 ]
> > > I checked server processes manually and found that lustre4 runs
> > > "/usr/lib/ocf/resource.d/pacemaker/ping monitor" while lustre3
> > > doesn't
> > > All is according to documentation but results are strange.
> > > Then I tried to add meta target-role="started" to pcs resource
> > create
> > > ping and this time ping started after node rebooted. Can I expect
> > > that it was just missing from official setup documentation, and
> > now
> > > everything will work fine?
> > 
-- 
Ken Gaillot <kgaillot at redhat.com>