As already mentioned, the quorum provider in the CentOS 7 cluster stack is Corosync version 2. Therefore, the cluster quorum configuration is provided in the
corosync.conf configuration file. With the previous Corosync version (version 1), the quorum capabilities were provided by CMAN; with Corosync version 2 included in the CentOS 7 cluster stack, the quorum capabilities are provided by Corosync itself, specifically by the
If you are configuring a two-node cluster on the CentOS 7 cluster stack, you should enable the
two_node cluster option by adding the following parameter to the
corosync.conf Quorum section:
By enabling the
two_node cluster option, the quorum is artificially set to ...