On 12/04/2013, at 4:58 PM, Andreas Mock <andreas.m...@web.de> wrote:
> Hi all, > > another question rised up while reading documentation concerning > 2-node-cluster under RHEL6.x with CMAN and pacemaker. > > a) In the quick start guide one of the things you set is > CMAN_QUORUM_TIMEOUT=0 in /etc/sysconfig/cman to get one > node of the cluster up without waiting for quorum. (Correct > me if my understanding is wrong) > > b) There is a special setting in cluster.conf > <cman two_node="1" expected_votes="1" > > </cman> > which allows one node to gain quorum in a two node cluster > (Please also correct me here if my understanding is wrong) > > c) And there is a pacemaker setting > no-quorum-policy which is mostly set to 'ignore' in all startup > tutorials. > > My question: I would like to understand how these settings > influence each other and/or are dependent. a) allows "service cman start" to complete (and therefor allow "service pacemaker start" to begin) before quorum has arrived. b) is a possible alternative to a) but I've never tested it because it is superseded by c) and in fact makes c) meaningless since the cluster always has quorum. a+c is preferred for consistency with clusters of more than 2 nodes. > > As most insight as possible appreciated. ;-) > > Best regards > Andreas > > > > _______________________________________________ > 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