Environment :
Red Hat Cluster Suite 4+
Red Hat Enterprise Linux 5 Advanced Platform (Clustering)
Red Hat Enterprise Linux Server 6 (with the High Availability Add on)
Description :
Support for the iLO3 fence device has been added with the release of cman 2.0.115-34.el5_5.4 through erratum RHEA-2010-0876 which provides support for iLO3 via fence_ipmilan.
The iLO3 firmware should be a minimum of 1.15 as provided by HP.
Details
Resolution :
On both cluster nodes, install the following OpenIPMI packages used for fencing:
$ yum install OpenIPMI OpenIPMI-tools
Stop and disable the 'acpid' daemon:
$ service acpid stop; chkconfig acpid off
Start ipmi service on all cluster nodes:
$ service ipmi start; chkconfig ipmi on
Test ipmitool interaction with iLO3:
$ ipmitool -H
The desired output is:
Chassis Power is on
Edit the /etc/cluster/cluster.conf to add the fence device:
<?xml version="1.0"?> <cluster alias="rh5nodesThree" config_version="32" name="rh5nodesThree"> <fence_daemon clean_start="0" post_fail_delay="1" post_join_delay="3"/> <clusternodes> <clusternode name="rh5node1.examplerh.com" nodeid="1" votes="1"> <fence> <method name="1"> <device domain="rh5node1" name="ilo3_node1"/> </method> </fence> </clusternode> <clusternode name="rh5node2.examplerh.com" nodeid="2" votes="1"> <fence> <method name="1"> <device domain="rh5node2" name="ilo3_node2"/> </method> </fence> </clusternode> <clusternode name="rh5node3.examplerh.com" nodeid="3" votes="1"> <fence> <method name="1"> <device domain="rh5node3" name="ilo3_node3"/> </method> </fence> </clusternode> </clusternodes> <cman expected_votes="3"> <multicast addr="229.5.1.1"/> </cman> <fencedevices> <fencedevice agent="fence_ipmilan" power_wait="10" ipaddr="XX.XX.XX.XX" lanplus="1" login="username" name="ilo3_node1" passwd="password"/> <fencedevice agent="fence_ipmilan" power_wait="10" ipaddr="XX.XX.XX.XX" lanplus="1" login="username" name="ilo3_node2" passwd="password"/> <fencedevice agent="fence_ipmilan" power_wait="10" ipaddr="XX.XX.XX.XX" lanplus="1" login="username" name="ilo3_node3" passwd="password"/> </fencedevices> <rm> <failoverdomains/> <resources/> </rm> </cluster>
Test that fencing is successful. From node1 attempt to fence node2 as follows:
$ fence_node node2
