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



with a 2 node cluster you may have a "split brain" problem (it then there is no communication between the nodes so each node try's to fence the other) in your case the problem may be different and there is no fencing at all.
The quorum disk/partition solves that problem.
After you set the fencing for your nodes (make sure the fencing works) create a quorum partiotion its easy  (Google it ) in your cluster.conf you'll need to change

<cman expected_votes="1" two_node="1"/> to
<cman expected_votes="3" two_node="0"/>


See if this helps you.

2008/9/22 mulach <mulach libero it>

I changed recovery="restart" to  relocate, but don't work. I understood what means Try using quorum partition to solve this problem

 

 


Da: linux-cluster-bounces redhat com [mailto:linux-cluster-bounces redhat com] Per conto di Grisha G.
Inviato: lunedì 22 settembre 2008 11.43
A: linux clustering
Oggetto: Re: [Linux-cluster] Cluster Centos - Don't switch resource

 


Try changing   recovery="restart" to  relocate if that wont work, check if  your fencing works properly
If your node don't get fenced the other node will not take the service from the failed node.
Try using quorum partition to solve this problem

Grisha

On Mon, Sep 22, 2008 at 10:07 AM, Alex <linux vfemail net> wrote:

Take a look here, for a working example. It worked for me:
http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/en-US/RHEL510/Cluster_Administration/ap-httpd-service-CA.html

Regards,
Alx


On Monday 22 September 2008 09:56, 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>
>  <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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