Hi Sven, I tried to test your suggestion and executed corosync only on the observer node.
In my test "pmosidea" is observer node running only corosync process. "pmidea1" and "pmidea2" are other cluster nodes running both corosync and pacemaker. I set no_quorum_policy as "stop". When I killed corosync process on "pmidea1", I expect that quorum will be ok between "pmidea2" and "pmosidea". And cluster resources will be on "pmidea2". But in my test cluster resources are stopped. Quorum seems to be lost from crm interface: ****************************************************** Last updated: Thu Mar 7 12:52:26 2013 Last change: Thu Mar 7 12:42:03 2013 via crmd on pmidea1 Stack: openais Current DC: pmidea2 - partition WITHOUT quorum Version: 1.1.8-4.el6-394e906 2 Nodes configured, 2 expected votes 2 Resources configured. Online: [ pmidea2 ] OFFLINE: [ pmidea1 ] ****************************************************** Anybody have a working setup with a corosync-only quorum node? Regards, -----Original Message----- From: Sven Arnold [mailto:sven.arn...@localite.de] Sent: 07 Mart 2013 Perşembe 11:51 To: pacemaker@oss.clusterlabs.org Subject: Re: [Pacemaker] Pacemaker cluster with different operating systems Hi Osman, > We think that the third node will be in standby, so only corosync and > pacemaker processes will execute and no resource will be executed on this > node by the cluster. I may be wrong here but from my understanding and according to [1] it is sufficient to run corosync only on an only-for-quorum node. Does this help you? [1] http://www.woodwose.net/thatremindsme/2011/04/stonith-and-quorum-in-pacemaker/ Regards, Sven _______________________________________________ Pacemaker mailing list: Pacemaker@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 _______________________________________________ Pacemaker mailing list: Pacemaker@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
