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Re: [Linux-cluster] Cluster Centos - Don't switch resource



On Monday 22 September 2008 08:56, mulach libero it wrote:
> Hi,
>
> in Centos 5.2 i had create a cluster with Conga(two node has been in vmware
> server). The problem is that when a node fail, don't switch the service.
> Below the cluster.conf
>
> --------------------------------
> <?xml version="1.0"?>
> <cluster alias="SecondCluster" config_version="23" name="SecondCluster">
> 	<fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/>
> 	<clusternodes>
> 		<clusternode name="clu1.localdomain" nodeid="1" votes="1">
> 			<fence>
> 				<method name="1"/>
> 			</fence>
> 		</clusternode>
> 		<clusternode name="clu2.localdomain" nodeid="2" votes="1">
> 			<fence>
> 				<method name="1"/>
> 			</fence>
> 		</clusternode>
> 	</clusternodes>

If I understand correctly your cluster.conf file, you don't have fencing 
devices for your nodes. In my tests, I **had** to define fencing methods for 
the service to switch when one node fails. Otherwise, it doesn't work !

You can try configuring a "fence_manual" method (just for testing). After clu1 
failure, clu2 should "fence" it. You then have to use 
the "fence_ack_manual -n clu1.localdomain" command to confirm manually that 
the fencing is done.

http://sources.redhat.com/cluster/wiki/FAQ/Fencing#fence_manual2


In my cluster.conf, it looks like :


 	<clusternode name="clu1.localdomain" nodeid="1" votes="1">
 		<fence>
 		  <method name="1"/>
                     <device name="manual_1" nodename="clu1.localdomain"/>
 		</fence>
	</clusternode>
	(same for clu2)

        <fencedevices>
                <fencedevice agent="fence_manual" name="manual_2"/>
                <fencedevice agent="fence_manual" name="manual_1"/>
        </fencedevices>

Does it solve your pb ?


> 	<cman expected_votes="1" two_node="1"/>
> 	<fencedevices/>
> 	<rm>
> 		<failoverdomains>
> 			<failoverdomain name="fail" ordered="1" restricted="1">
> 				<failoverdomainnode name="clu1.localdomain" priority="1"/>
> 				<failoverdomainnode name="clu2.localdomain" priority="2"/>
> 			</failoverdomain>
> 		</failoverdomains>
> 		<resources>
> 			<ip address="192.168.80.201" monitor_link="1"/>
> 			<fs device="/dev/sdb1" force_fsck="0" force_unmount="0" fsid="45662"
> fstype="ext3" mountpoint="/mnt/sdc" name="Share" options=""
> self_fence="0"/> </resources>
> 		<service autostart="1" domain="fail" exclusive="1" name="IPS"
> recovery="restart"> <ip ref="192.168.80.201"/>
> 			<fs ref="Share"/>
> 		</service>
> 	</rm>
> 	<fence_xvmd/>
> </cluster>
>
> --------------------------------
>
>
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-- 
Xavier Montagutelli                      Tel : +33 (0)5 55 45 77 20
Service Commun Informatique              Fax : +33 (0)5 55 45 75 95
Universite de Limoges
123, avenue Albert Thomas
87060 Limoges cedex


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