topic Re: 2 node openVMS cluster with quorum disk in Operating System - OpenVMS

2 node openVMS cluster with quorum disk

Dilip7 — Thu, 01 Feb 2024 03:59:23 GMT

Dear all,

i am new to OpenVMS cluster environment. in my environment application is running on 2 nodes (both 8.4) cluster with a quoum disk. parameters are

expected vodes=3 ,votes (for each nodes)=1, qdskvotes=1

can someone assist in gracefull shutdown and startup process of the clusters. ( such that nodes auto joins cluster when it is up).

Query: 2 node openVMS cluster with quorum disk

support_s — Wed, 31 Jan 2024 18:36:01 GMT

System recommended content:

1. Guidelines for OpenVMS Cluster Configurations - June 2010

2. Guidelines for OpenVMS Cluster Configurations - April 2001

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Re: 2 node openVMS cluster with quorum disk

Volker Halle — Wed, 31 Jan 2024 18:55:32 GMT

You should first verify, if the active cluster parameters are as expected:

$ SHOW CLUSTER/CONT

then just type: ADD VOTES, EXPECTED, QDVOTES, CLUSTER

every node should show: VOTES=1, EXPECT=3, QDVOTES=1

In the CLUSTER display, you should have CL_EXPECT=3, CL_QUORUM=2, CL_VOTES=3, QF_VOTE=YES

If the above is true, you can either shut down each member - one at a time - with

$ @sys$SYSTEM:SHUTDOWN and specify Shutdown options: REMOVE_NODE

or run the following command on BOTH nodes:

$ @sys$SYSTEM:SHUTDOWN and specify Shutdown options: CLUSTER

The 2 nodes will cleanly stop, once both of them reach the end of the shutdown procedure.

To start the systems again, boot them one by one or both at the same time.

Volker.

Re: 2 node openVMS cluster with quorum disk

Dilip7 — Thu, 01 Feb 2024 04:51:46 GMT

Thank you bolkar for your reply.

So this command need to run on both the nodes?
$ @sys$SYSTEM:SHUTDOWN and specify Shutdown options: REMOVE_NODE

Or only on 1st node and shutdown 2nd node as normal(without remove_node) options.

Re: 2 node openVMS cluster with quorum disk

Volker Halle — Thu, 01 Feb 2024 06:48:43 GMT

@Dilip7 wrote:

Or only on 1st node and shutdown 2nd node as normal(without remove_node) options.

When shutting down the last running node in a cluster, you don't need to use REMOVE_NODE, but it doesn't hurt

Volker.