[Linux-cluster] Working of a two-node cluster

[Vijay Kakkar]

You should look for qdisk now.I hope this will be helpful.

On Mon, Apr 27, 2015 at 11:38 AM, Jatin Davey <jashokda at cisco.com> wrote:

>  Yes , I did restart it.
>
>
> On 4/27/2015 11:31 AM, emmanuel segura wrote:
>
> did you restarted the cluster after added the delay parameter?
>
> 2015-04-27 7:49 GMT+02:00 Jatin Davey <jashokda at cisco.com> <jashokda at cisco.com>:
>
>  Ok , i tried with delay but it has not helped. I guess i have to try using
> quorum disk now.
>
> Thanks
> Jatin
>
> On 4/24/2015 7:06 PM, Vijay Kakkar wrote:
>
> You may need to delay the fencing ( delay=seconds ) or use quorum disk if
> delaying the fencing doesn't help.
>
> On Fri, Apr 24, 2015 at 6:23 PM, Jatin Davey <jashokda at cisco.com> <jashokda at cisco.com> wrote:
>
>  Here is my cluster.conf file
>
> ************************
> <?xml version="1.0"?>
> <cluster config_version="4" name="****">
>         <clusternodes>
>                 <clusternode name="node-103" nodeid="1">
>                         <fence>
>                                 <method name="Method01">
>                                         <device name="node-103"/>
>                                 </method>
>                         </fence>
>                 </clusternode>
>                 <clusternode name="node-105" nodeid="2">
>                         <fence>
>                                 <method name="Method02">
>                                         <device name="node-105"/>
>                                 </method>
>                         </fence>
>                 </clusternode>
>         </clusternodes>
>         <cman expected_votes="1" two_node="1"/>
>         <fencedevices>
>                 <fencedevice agent="fence_ipmilan" auth="password"
> ipaddr="x.x.x.x" lanplus="on" login="admin" name="node-103" passwd="*****"
> privlvl="ADMINISTRATOR"/>
>                 <fencedevice agent="fence_ipmilan" auth="password"
> ipaddr="x.x.x.x" lanplus="on" login="admin" name="node-105" passwd="******"
> privlvl="ADMINISTRATOR"/>
>         </fencedevices>
>         <fence_daemon post_join_delay="120"/>
>         <rm>
>                 <resources>
>                         <netfs export="/test" force_unmount="1"
> fstype="nfs" host="x.x.x.x" mountpoint="/test/test/test" name="test123"/>
>                         <ip address="x.x.x.x" sleeptime="5"/>
>                         <script file="/xxx/xxx/xxx/xxx/xx.sh"
> name="xxxx"/>
>                 </resources>
>                 <failoverdomains>
>                         <failoverdomain name="Failover01" nofailback="1"
> ordered="1">
>                                 <failoverdomainnode name="node-103"
> priority="1"/>
>                                 <failoverdomainnode name="node-105"
> priority="2"/>
>                         </failoverdomain>
>                 </failoverdomains>
>                 <service domain="Failover01" name="Service01"
> recovery="relocate">
>                         <ip ref="x.x.x.x"/>
>                         <netfs ref="test123"/>
>                         <script ref="xxxx"/>
>                 </service>
>         </rm>
> </cluster>
>
>
> On 4/24/2015 6:01 PM, emmanuel segura wrote:
>
>  please share your cluster config, maybe in this way someone can help you.
>
> 2015-04-24 14:12 GMT+02:00 Jatin Davey <jashokda at cisco.com> <jashokda at cisco.com>:
>
>  Hi
>
> I am using a two node cluster using RHEL 6.5. I have a very fundamental
> question.
>
> For the two node cluster to work , Is it mandatory that both the nodes
> are
> "online" and communicating with each other ?
>
> What i can see is that if there is communication failure between them
> then
> either both the nodes are fenced or the cluster gets into a "stopped"
> state
> (Seen from output of clustat command).
>
> Apologies if my questions are naive. I am just starting to work with
> RHEL
> cluster add-on.
>
> Thanks
> Jatin
>
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> Cheers
>
> Vijay Kakkar - RHC{E,SS,VA,DS,A,I,X}
>
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-- 
Cheers

*Vijay Kakkar - RHC{E,SS,VA,DS,A,I,X}*

Techgrills Systems Pvt. Ltd.
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