<div dir="ltr">In 2 node cluster you should use a quorum disk to solve the split brain problem. after you create a quorum disk change this line in you cluster.conf from <cman expected_votes="1" two_node="1"/> to <cman expected_votes="3" two_node="0"/> Grisha <div class="gmail_quote"> On Tue, Sep 23, 2008 at 7:27 PM, Stevan Colaco <<a href="mailto:stevan.colaco@gmail.com">stevan.colaco@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello issue: Fencing using fence_ipmilan, each node keeps fencing the other node ending in a fence loop..... We have implemented RH Cluster on RHEL5.2 64bit. Server Hardware: SUN X4150 Storage: SUN 6140 Fencing Machnism: fence_ipmilan We have downloaded the IPMI fence_ipmilan and configured two node cluster with ipmi fencing. But.. when we ifdown the NIC interface, the node gets fenced but the service does not relocate to the other node. at the same time when the initially fenced node joins back the cluster it fences the other node...... this keeps on ending in a loop. We downloaded and followed the intructions from the ipmi site mentioned below <a href="http://docs.sun.com/source/819-6588-13/ipmi_com.html#0_74891" target="_blank">http://docs.sun.com/source/819-6588-13/ipmi_com.html#0_74891</a> we tested with following Cmd line method which works fine. #fence_ipmilan -a "ip addr" -l root -p <Passkey> -o <on|off|reboot> here is my cluster.conf <?xml version="1.0"?> <cluster alias="tibcouat" config_version="12" name="tibcouat"> <fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/> <clusternodes> <clusternode name="<a href="http://tibco-node1-uat.kmefic.com.kw" target="_blank">tibco-node1-uat.kmefic.com.kw</a>" nodeid="1" votes="1"> <fence> <method name="1"> <device name="tibco-node1"/> </method> </fence> </clusternode> <clusternode name="<a href="http://tibco-node2-uat.kmefic.com.kw" target="_blank">tibco-node2-uat.kmefic.com.kw</a>" nodeid="2" votes="1"> <fence> <method name="1"> <device name="tibco-node2"/> </method> </fence> </clusternode> </clusternodes> <cman expected_votes="1" two_node="1"/> <fencedevices> <fencedevice agent="fence_ipmilan" ipaddr="<a href="http://172.16.71.41" target="_blank">172.16.71.41</a>" login="root" name="tibco-node1" passwd="changeme"/> <fencedevice agent="fence_ipmilan" ipaddr="<a href="http://172.16.71.42" target="_blank">172.16.71.42</a>" login="root" name="tibco-node2" passwd="changeme"/> </fencedevices> <rm> <failoverdomains> <failoverdomain name="prefer_node1" nofailback="0" ordered="1" restricted="1"> <failoverdomainnode name="<a href="http://tibco-node1-uat.kmefic.com.kw" target="_blank">tibco-node1-uat.kmefic.com.kw</a>" priority="1"/> <failoverdomainnode name="<a href="http://tibco-node2-uat.kmefic.com.kw" target="_blank">tibco-node2-uat.kmefic.com.kw</a>" priority="2"/> </failoverdomain> </failoverdomains> <resources> <ip address="<a href="http://172.16.71.55" target="_blank">172.16.71.55</a>" monitor_link="1"/> <clusterfs device="/dev/vg0/gfsdata" force_unmount="0" fsid="63282" fstype="gfs" mountpoint="/var/www/html" name="gfsdata" self_fence="0"/> <apache config_file="conf/httpd.conf" name="docroot" server_root="/etc/httpd" shutdown_wait="0"/> </resources> <service autostart="1" domain="prefer_node1" exclusive="0" name="webby" recovery="relocate"> <ip ref="<a href="http://172.16.71.55" target="_blank">172.16.71.55</a>"/> </service> </rm> </cluster> Kindly investigate and provide us the solution at the earliest. Thanks & Best Regards, -- Linux-cluster mailing list <a href="mailto:Linux-cluster@redhat.com">Linux-cluster@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/linux-cluster" target="_blank">https://www.redhat.com/mailman/listinfo/linux-cluster</a> </blockquote></div> </div>