topic Re: VMS clustering question in Operating System - OpenVMS

VMS clustering question

Jorge Cocomess — Thu, 28 Jun 2007 12:41:11 GMT

We have a two (2) nodes cluster and having problems with getting both nodes of this cluster operating. I believe this is an Active/Active cluster configuration.

Where should begin to look at for symtoms/issues???

Thanks,
Jorge

Re: VMS clustering question

Volker Halle — Thu, 28 Jun 2007 13:19:47 GMT

Jorge,

what is the cluster interconnect (LAN only or any shared SCS/IO bus) ?

Is a quorum disk in use (if a shared IO bus is available) ?

Shared System disk ?

For a plain 2-node cluster without a quorum disk, just give 1 VOTE to each node and set EXPECTED_VOTES=2. Make sure you have the same cluster group number and password on both systems and make sure a working LAN connection exists. Then boot the 2 nodes and the cluster should form. When shutting down any node, use REMOVE_NODE, so that the remaining node can continue to run. Just halting one node will cause the other one to wait for quorum.

For more information, describe your physical configuration.

What 'does not work' ?

Volker.

Re: VMS clustering question

Bill Hall — Thu, 28 Jun 2007 13:25:38 GMT

Jorge,

Review the "Guidelines for OpenVMS Cluster Configurations" manual and verify the hardware configuration you have is supported.

Next review the "OpenVMSCluster Systems" manual.

Then you should be able to ask for more specific help.

Bill

Re: VMS clustering question

Robert Gezelter — Thu, 28 Jun 2007 14:01:50 GMT

Jorge,

What messages are you receiving?

What behavior is happening?

What is your hardware configuration (CPUs, Interconnect, Storage)? (This is VERY important; OpenVMS clusters are probably the most flexible clustering scheme in IT, but certain hardware configurations have very specific hardware requirements.)

- Bob Gezelter, http://www.rlgsc.com

Re: VMS clustering question

Andy Bustamante — Thu, 28 Jun 2007 14:03:43 GMT

Jorge,

OpenVMS is "active/active" by design in a cluster configuration. Your application may only support being started on one node a time.

What are the symptom of "getting both nodes operating?" Can you boot both nodes into a cluster? Do you have a quorum disk? What version of VMS is involved? What's the hardware, storage and cluster interconnect?

Andy

Re: VMS clustering question

Mrityunjoy Kundu — Fri, 29 Jun 2007 04:28:06 GMT

what type of cluster inter connect is used by your cluster?
Is there any quorum disk configured?

Please send details of sysgen prameters values---expected_votes,qdskvotes,vote

Re: VMS clustering question

Jorge Cocomess — Mon, 02 Jul 2007 11:51:57 GMT

Sorry for wasting you guys time on this. It's over my head, therefore, I called in the experts. When and if they find the problem, I'd be happy to post the result here for everyone.

Thank you for your time.

Jorge