Updating configuration with cman_tool produces error "Relax-NG validity error : Element cluster has extra content: failoverdomains" in a RHEL 6 High Availability cluster

Issue

• Facing some issue by setting up RH6.2 with cluster software. The problem are to get the cluster.conf validated to be able to use cman_tool to distribute the file to the other cluster nodes.

• Getting the below error:

# cman_tool version -r
tempfile:31: element failoverdomains: Relax-NG validity error : Element cluster has extra content: failoverdomains
Configuration fails to validate

• Cluster Configuration looks like below:

# cat /etc/cluster/cluster.conf
<?xml version="1.0"?>
<cluster config_version="21" name="MyCluster">
    <clusternodes>
            <clusternode name="node1.example.com" nodeid="1" votes="1">
                    <fence>
                            <method name="fence">
                                    <device name="fence-node1"/>
                            </method>
                    </fence>
            </clusternode>
            <clusternode name="node2.example.com" nodeid="2" votes="1">
                    <fence>
                            <method name="fence">
                                    <device name="fence-node2"/>
                            </method>
                    </fence>
            </clusternode>
            <clusternode name="node3.example.com" nodeid="3" votes="1">
                    <fence>
                            <method name="fence">
                                    <device name="fence-node3"/>
                            </method>
                    </fence>
            </clusternode>
    </clusternodes>
    <fencedevices>
            <fencedevice agent="fence_ipmilan" ipaddr="xx.xx.xx.xx" lanplus="on" login="cluster" name="fence-node1" passwd="yyyyy"/>
            <fencedevice agent="fence_ipmilan" ipaddr="xx.xx.xx.xx" lanplus="on" login="cluster" name="fence-node2" passwd="yyyyy"/>
            <fencedevice agent="fence_ipmilan" ipaddr="xx.xx.xx.xx" lanplus="on" login="cluster" name="fence-node3" passwd="yyyyy"/>
    </fencedevices>
    <failoverdomains/>
    <resources/>
    <vm autostart="0" exclusive="0" migrate="live" name="l1010s" path="/etc/libvirt/qemu" recovery="restart"/>
    <vm autostart="0" exclusive="0" migrate="live" name="l1011s" path="/etc/libvirt/qemu" recovery="restart"/>
    <cman transport="udpu"/>
</cluster>