[Pacemaker] Query regarding component failover

[Bhagwan Sahai]

Hello,
       There are two copies of service 1 running in master slave mode
in the cluster.


Regards
Bhagwan Sahai

On Mon, Sep 26, 2011 at 9:12 AM, Andrew Beekhof <andrew at beekhof.net> wrote:
> On Fri, Sep 9, 2011 at 3:08 PM, Bhagwan Sahai <bhagwan.sahai at gmail.com> wrote:
>> Hi,
>>     I have a HA requirement wherein I need to have following resource
>>  and setup:
>> Setup:
>> 2 node - cluster using Heartbeat as cluster and messaging layer
>>
>> Resource group:
>>
>> 1) service1 ( Master slave)
>
> So there are two copies of service1 running in the cluster?
> Or just one that gets moved to the backup node when a failure happens?
>
>> 2) service 2( Master slave)
>>
>> Constraints defined:
>> master instance of both service 1 and 2 are on same node. (There are
>> defined in group as they are dependent on each other)
>>
>>
>> I need to make sure that if there is any failuire in Master instance
>> of  service 1 or service 2 then the whole service group should
>> failover(what you call component failover).
>> It  mean if master instance of service 1 and 2 are running on node 1
>> and standby on node 2 then if there is any failuire in master instance
>> of either
>> service 1 or 2 should result in node 2 hosting the master group and on
>> node 1 the the whole group will be restarted and assigned standby
>> state. Similarily if there any failuire in standby instance then the
>> whole group should restart and assigned same standby state.
>>
>>
>> So can you please tell me how is it possible through Pacemaker.
>>
>>
>> Regards
>> Bhagwan Sahai
>>
>>
>>
>> --
>> BHAGWAN SAHAI
>> Sr. Principal Engineer
>> Hughes Systique India Pvt Ltd.
>> D-8, Infocity - II, Sector - 33
>> Gurgaon, Haryana
>> Phone : 91.124.3929170
>> Email:bhagwan.sahai at hsc.com
>>          bhagwan.sahai at gmail.com
>> Website : www.hsc.com
>>
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>>
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>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>> Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
>>
>
> _______________________________________________
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> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
>



-- 
BHAGWAN SAHAI
Sr. Principal Engineer
Hughes Systique India Pvt Ltd.
D-8, Infocity - II, Sector - 33
Gurgaon, Haryana
Phone : 91.124.3929170
Email:bhagwan.sahai at hsc.com
         bhagwan.sahai at gmail.com
Website : www.hsc.com