>>> Ken Gaillot <kgail...@redhat.com> schrieb am 16.10.2017 um 22:57 in >>> Nachricht <1508187437.6286.7.ca...@redhat.com>: > On Mon, 2017-10-16 at 21:49 +0200, Lars Ellenberg wrote: >> On Mon, Oct 16, 2017 at 09:20:52PM +0200, Lentes, Bernd wrote: >> > ----- On Oct 16, 2017, at 7:38 PM, Digimer li...@alteeve.ca wrote: >> > > On 2017-10-16 01:24 PM, Lentes, Bernd wrote: >> > > > i have the following behavior: I put a node in maintenance >> > > > mode, afterwards stop >> > > > corosync on that node with /etc/init.d/openais stop. >> > > > This node is immediately fenced. Is that expected behavior ? I >> > > > thought putting a >> > > > node into maintenance does mean the cluster does not care >> > > > anymore about that >> > > > node. >> > OS is SLES 11 SP4. That's not the most recent one. >> > Pacmekaer is 1.1.12. >> > I didn't plan to remove the node, but to do some maintenance on it. >> > >> > If i put the node in standby, then i can invoke >> > "/etc/init.d/openais >> > stop" without that node getting fenced. >> > But then all resources on that node are stopped/migrated. If i >> > don't >> > want that, i thought maintenance is the right way. >> > Am i wrong ? >> > >> > Ah, i just saw that i wasn't complete clear. The node is fenced >> > after >> > stopping openais, not after putting it into maintenance. >> > I did that via "crm node maintenance <node>" >> >> from the Changelog: >> >> Changes since Pacemaker-1.1.15 >> ... >> + pengine: do not fence a node in maintenance mode if it shuts down >> cleanly >> ... >> >> just saying ... may or may not be what you are seeing. >> >> Short term "workaround" may be to do things differently. >> Maybe just set the cluster wide maintenance mode, not per node? > > Sounds right. > > Another thing to keep in mind is that even if pacemaker doesn't fence > the node, if you use DLM, DLM might fence the node (it doesn't know > about or respect any pacemaker maintenance/unmanaged settings). > > I'd stop pacemaker before stopping corosync, in any case. In > maintenance mode, that should be fine. I don't think a running > pacemaker would be able to reconnect to corosync after corosync comes > back.
In SLES11 "rcopenais stop" stops pacemaker, corosync, and SBD in that order. > >> What are you really trying to do, >> what is the reason you need it in maintenance-mode >> and stop pacemaker/corosync/openais/the clusterstack, >> but do not want to stop/migrate off the resources, >> as would be done with "standby"? >> > -- > Ken Gaillot <kgail...@redhat.com> > > _______________________________________________ > Users mailing list: Users@clusterlabs.org > http://lists.clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org _______________________________________________ Users mailing list: Users@clusterlabs.org http://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
