[ClusterLabs] a newbie --question

‪H Yavari‬ ‪ hyavari at rocketmail.com
Tue Sep 15 10:32:38 EDT 2015

I should note this: AppY on Node A works only with AppZ on Node B, and AppY on Node C works only with AppZ on Node D.(Some hardware restrictions)


      From: Michael Schwartzkopff <ms at sys4.de>
Am Dienstag, 15. September 2015, 13:38:59 schrieb H Yavari‬:

> Hi,
> Thanks for reply.
> The problem is Compute resource, the appY and appZ can't run on same Server.
> It is possible ?
> Regards,

As far as I understood:

You have the applications Y and Z and the servers A, B, C and D.

The applications Y and Z cannot run on the same node.

Solution    1:
Make two clusters M (from node A and B) and Cluster N (from nodes C and D). 
Cluster M runs the application Y and Cluster N run the application Z.

Solution 2:
Make one big cluster from all four nodes and configure constraints that the 
applications will not run on the same node. Side note: Basically you only need 
three nodes in this scenario:
- application Y running on node A
- application Z running on node B
- in case of a failure of A or B the cluster starts the failed application on 
node C

Mit freundlichen Grüßen,

Michael Schwartzkopff

[*] sys4 AG

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