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[Linux-cluster] RHEL 5.4 cluster with DRAC6



Dear List Members,

 

We are trying to create a two-node cluster with RHEL 5.4 (AP). The hardware is two nos. DELL R610 servers. These servers are having iDRAC6 and we are planning to do the fencing using these cards. The present situation is as follows:

 

  1. We are able to fence the remote host by issuing the command fence_ipmilan for the IP address of the DRAC card of the remote host
  2. The service is getting relocated if the host running the service is shutdown (init 0) or restarted (init 6).
  3. But if we power cycle one node from the other node using the ipmitool command then the service is not getting relocated to the other machine. The clustat reports that the service is in "started" state in the node that has been power cycled though the status of the node is reported to be "Offline". The log file of the node that is not power cycled reports that it is failing to fence the other node.

    The IP addresses of the setup are as follows:

    Node : wmd01.tibs.edu.in
                    IP address of the machine is 10.100.4.11
                    IP address of the DRAC is 10.100.4.17

    Node : wmd02.tibs.edu.in
                    IP address of the machine is 10.100.4.12
                    IP address of the DRAC is 10.100.4.16

    The cluster.conf file is given below.

 

<?xml version="1.0"?>

<cluster config_version="7" name="tibs_wmd">

        <fence_daemon clean_start="1" post_fail_delay="0" post_join_delay="3"/>

        <clusternodes>

                <clusternode name="wmd01.tibs.edu.in" nodeid="1" votes="1">

                        <fence/>

                </clusternode>

                <clusternode name="wmd02.tibs.edu.in" nodeid="2" votes="1">

                        <fence/>

                </clusternode>

        </clusternodes>

        <cman expected_votes="1" two_node="1"/>

        <fencedevices>

                <fencedevice agent="fence_ipmilan" auth="" ipaddr="10.100.4.17" login="root" name="wmd01_ipmi" passwd="calvin"/>

                <fencedevice agent="fence_ipmilan" auth="" ipaddr="10.100.4.16" login="root" name="wmd02_ipmi" passwd="calvin"/>

        </fencedevices>

        <rm>

                <failoverdomains>

                        <failoverdomain name="wmd_http" ordered="1" restricted="0">

                                <failoverdomainnode name="wmd01.tibs.edu.in" priority="2"/>

                                <failoverdomainnode name="wmd02.tibs.edu.in" priority="1"/>

                        </failoverdomain>

                </failoverdomains>

                <resources>

                        <ip address="10.100.4.13" monitor_link="1"/>

                        <script file="/etc/init.d/httpd" name="wmd_http_script"/>

                </resources>

                <service autostart="1" domain="wmd_http" name="wmd_http_srvc" recovery="relocate">

                        <ip ref="10.100.4.13"/>

                        <script ref="wmd_http_script"/>

                </service>

        </rm>

</cluster>

 

Kindly help us to resolve the issue please. We are totally stuck up.

 

With regards,

 

Goutam

 


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