[Pacemaker] RHEL6.x dependency between 2-node-settings for cman and quorum settings in pacemaker

Andreas Mock andreas.mock at web.de
Fri Apr 12 06:58:10 UTC 2013


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.

As most insight as possible appreciated. ;-)

Best regards
Andreas






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