Pacemaker cluster report errors reading/parsing `/var/lib/pacemaker/cib/cib.xml`

Issue

• Below messages are observed in the /var/log/cluster/corosync.log when cluster is started on node

  cib:    error: crm_is_writable:   /var/lib/pacemaker/cib/cib.xml must be owned and r/w by user hacluster
  cib:    error: crm_xml_err:       XML Error: Permission deniedPermission deniedI/O warning : failed to load external entity "/var/lib/pacemaker/cib/cib.xml"
  cib:    error: filename2xml:      Couldn't parse /var/lib/pacemaker/cib/cib.xml
  cib:  warning: cib_file_read_and_verify:  Cluster configuration file /var/lib/pacemaker/cib/cib.xml is corrupt (unparseable as XML)
  cib:  warning: retrieveCib:       Continuing but /var/lib/pacemaker/cib/cib.xml will NOT be used.
  cib:  warning: readCibXmlFile:    Continuing with an empty configuration.
  

• After full cluster restart there are no configured resources in the cluster

• File /var/lib/pacemaker/cib/cib.xml is not in sync with other nodes in cluster when cluster is up and running