The configuration files for the Red Hat High Availability add-on are
cib.xml. Do not edit these files directly; use the
pcsd interface instead.
cluster.conf file provides the cluster parameters used by
corosync, the cluster manager that Pacemaker is built on.
cib.xml file is an XML file that represents both the cluster’s configuration and current state of all resources in the cluster. This file is used by Pacemaker's Cluster Information Base (CIB). The contents of the CIB are automatically kept in sync across the entire cluster