[Linux-cluster] Basic RHEL 5.1 cluster problem

Dave Costakos david.costakos at gmail.com
Tue Jun 10 16:53:55 UTC 2008


It is expected behavior for a cluster node to fence the 2nd node in a 2-node
cluster _IF_ it comes up and it can't connect to the 2nd cluster node ccs
daemon.

I've seen this happen in the past when multicast doesn't work as you might
expect on your network.  You may want to try specifying a multicast IP
address in the 224.0.0.111 - 224.0.0.250 range in your cluster.conf file.

-Dave.

2008/6/10 Loris Strozzini <lstrozzini at gmail.com>:

> Hi all,
> I have a problem with my RHEL 5.2 a 2 node cluster running on IBM X3650.
> My cluster is configured for fencing on IBM RSAII via
> system-config-cluster, with only one network interface, no shared storage
> and I have followed the Red Hat Cluster suite for installation.
> At the first look, no syntax error in my cluster.conf but when I'm going to
> start the cman and the rgmanager daemons on primary node the other node
> reboot or poweroff immediately.
>
> Can anyone help me?
> Thanks in advance
>
>
> Loris
>
>
> My cluster.conf:
>
> <?xml version="1.0" ?>
> <cluster alias="newsocks" config_version="10" name="newsocks">
>         <fence_daemon post_fail_delay="60" post_join_delay="30"/>
>         <clusternodes>
>                 <clusternode name="socks1" nodeid="1" votes="1">
>                         <fence>
>                                 <method name="1">
>                                         <device name="RSA_1"/>
>                                 </method>
>                         </fence>
>                 </clusternode>
>                 <clusternode name="socks2" nodeid="2" votes="1">
>                         <fence>
>                                 <method name="1">
>                                         <device name="RSA_2"/>
>                                 </method>
>                         </fence>
>                 </clusternode>
>         </clusternodes>
>         <cman expected_votes="1" two_node="1"/>
>         <fencedevices>
>                 <fencedevice agent="fence_rsa" ipaddr="10.242.164.126"
> login="xxxxx" name="RSA_1" passwd="xxxxx"/>
>                 <fencedevice agent="fence_rsa" ipaddr="10.242.164.128"
> login="xxxxx" name="RSA_2" passwd="xxxxx"/>
>         </fencedevices>
>         <rm>
>                 <failoverdomains>
>                         <failoverdomain name="domso" ordered="1"
> restricted="1">
>                                 <failoverdomainnode name="socks1"
> priority="1"/>
>                                 <failoverdomainnode name="socks2"
> priority="2"/>
>                         </failoverdomain>
>                 </failoverdomains>
>                 <resources>
>                         <ip address="10.242.156.100" monitor_link="1"/>
>                 </resources>
>                 <service autostart="1" domain="domso" name="servso"
> recovery="relocate">
>                         <ip ref="10.242.156.100">
>                                 <script file="/etc/init.d/ss5"
> name="sockss5"/>
>                         </ip>
>                 </service>
>         </rm>
> </cluster>
>
>
>
>
> --
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> Linux-cluster at redhat.com
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>



-- 
Dave Costakos
mailto:david.costakos at gmail.com
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