Edit File: high-availability.xml
<?xml version="1.0" encoding="utf-8"?> <service> <short>Red Hat High Availability</short> <description>This allows you to use the Red Hat High Availability (previously named Red Hat Cluster Suite). Ports are opened for corosync, pcsd, pacemaker_remote, dlm and corosync-qnetd.</description> <port protocol="tcp" port="2224"/> <port protocol="tcp" port="3121"/> <port protocol="tcp" port="5403"/> <port protocol="udp" port="5404"/> <port protocol="udp" port="5405-5412"/> <port protocol="tcp" port="9929"/> <port protocol="udp" port="9929"/> <port protocol="tcp" port="21064"/> </service>