[Linux-cluster] How to add an unimportant resource to an important cluster?

[emmanuel segura]

You need to use __independent_subtree if the resource that you want to
use is in the same group of the important resource

2016-05-24 10:45 GMT+02:00 Eivind Olsen <eivind at aminor.no>:
> I have a cluster, running RHEL 6.7, with Ricci, Luci, rgmanager etc.
> This is a 2 node cluster, where services are running on one node. The
> service is an Oracle database, and the cluster controls several resources:
> * LVM volume (using clvmd)
> * file system on a logical volume
> * IP address
> * Oracle listener
> * Oracle RDBMS instance
>
> I have now been asked to put another resource (another Oracle RBMS instance)
> but with the requirement that this new resource shouldn't cause the rest of
> the cluster resources to fail over to the other node. Basically, what's been
> asked is to have another resource which will be started by the cluster, but
> if it fails the health check it will be left alone.
>
> Is it possible to somehow mark one of the resources as "Not really
> important, attempt to restart if down but don't migrate the entire service
> with all the resources to the other node"?
> My gut feeling tells me the better (correct, only etc.) way is probably to
> set up a separate service for this new less important RDBMS instance, giving
> it its own IP address, LVM volume, filesystem, listener etc.
>
> Regards
> Eivind Olsen
>
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