[Pacemaker] Query regarding component failover

[Andrew Beekhof]

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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