topic Re: Problem with Cluster_config.com VMS V7.3-2 in Operating System - OpenVMS

Problem with Cluster_config.com VMS V7.3-2

Ajay Behari — Fri, 15 Jun 2007 08:56:57 GMT

It seems LAN is not being recognised as a cluster interconnect by cluster_config.com.
While adding a node to an existing 6 nodes cluster, I ran into the error as indicated in the attached document.

What am I doing wrong?
All help is very much appreciated.
Ajay.

Re: Problem with Cluster_config.com VMS V7.3-2

Karl Rohwedder — Fri, 15 Jun 2007 09:05:22 GMT

Ajya,

try again and specify Y as answer for the 'satellite' question. You specified no shared scsi/fibr and no satellite, so the routine assume some older interconnect (CI/DSSI).

regards Kalle

Re: Problem with Cluster_config.com VMS V7.3-2

Ajay Behari — Fri, 15 Jun 2007 09:09:59 GMT

Karl,
I didn't specify satellite as I was not adding a satellite but a full node member.
Maybe, I am confused. I will give it a try.

Thanks,
Ajay.

Re: Problem with Cluster_config.com VMS V7.3-2

Volker Halle — Fri, 15 Jun 2007 09:29:54 GMT

Ajay,

what do you want to do ? What's your current cluster config ?

You are about to configure new node NEPTUN on the current system's system disk. How is that node going to access that disk, if there is no shared SCSI/FC and no CI/DSSI and that new node is not a satellite ?

Are you trying to configure a new node with it's own system disk and only connected via the LAN ? Then you would have to run @CLUSTER_CONFIG on that nodes system disk and just make that node a cluster member.

Volker.

Re: Problem with Cluster_config.com VMS V7.3-2

Ajay Behari — Fri, 15 Jun 2007 09:46:40 GMT

Volker,

It is a LAN cluster I am told.
I checked to see NISCS_LOAD_PEA0 parameter set to 1.

I want to add another AXP system as another full fledged member of the cluster.

Ajay.

Re: Problem with Cluster_config.com VMS V7.3-2

Ajay Behari — Fri, 15 Jun 2007 09:50:54 GMT

It's a cluster with a common system disk.
All 6 nodes booting from the same disk.

Re: Problem with Cluster_config.com VMS V7.3-2

Volker Halle — Fri, 15 Jun 2007 09:53:43 GMT

Ajay,

please have a look into the OpenVMS Cluster manuals first and make yourself familiar with your current configuration.

You can find the following manuals:

- Guidelines for OpenVMS Cluster Configurations
- OpenVMS Cluster Systems

at

http://h71000.www7.hp.com/doc/os83_index.html

Volker.

Re: Problem with Cluster_config.com VMS V7.3-2

Volker Halle — Fri, 15 Jun 2007 10:05:41 GMT

Ajay,

how do those 6 existing systems access the common system disk ? Which IO subsystem ?

Volker.

Re: Problem with Cluster_config.com VMS V7.3-2

Hoff — Fri, 15 Jun 2007 10:11:04 GMT

If the new node is joining the cluster and is reaching the (shared) system disk using a LAN connection (and not accessing its disk via CI or DSSI, nor by direct shared SCSI access), then you are adding a satellite node.

There's no such thing as a "full member" of a cluster, because there's no concept of a "partial member". A node is either in the cluster, or it is not in the cluster.

As Volker says, the cluster manuals are invaluable here, and can help you avoid stomping on your data.

One cluster configuration error seen fairly regularly involves incorrect or "creative" settings for VOTES and EXPECTED_VOTES, and I've written up an introduction here: http://64.223.189.234/node/153
Incorrect and "creative" settings don't do what you want, and can open your disk data to corruption.

Stephen Hoffman
HoffmanLabs LLC

Re: Problem with Cluster_config.com VMS V7.3-2

Dean McGorrill — Fri, 15 Jun 2007 11:51:24 GMT

Hi Ajay,
if I'm reading this right (since you selected N for a satellite), you have a
node with its own system disk that you wish to join in to an existing cluster via LAN?
I've tended to do this by hand. for
various reasons I've put systems together for file xfers etc. On your new node to
add, in sysgen set

NISCS_LOAD_PEA0 = 1
MSCP_LOAD = 1
MSCP_SERVE_ALL = 2
ALLOCLASS = 0
VAXCLUSTER = 2
VOTES = 0

set these below to what the other systems have (if any on quorum)

EXPECTED_VOTES
RECNXINTERVAL
DISK_QUORUM
QDSKVOTES
QDSKINTERVAL

copy from the existing system, sys$system:cluster_authorize.dat to the
new system sys$system.

I think thats all, doing this from memory. reboot and you have a new cluster member.
Remember your running with individual files,
you may wish to share with the existing cluster. theres threads in here to help
you do that, ie sysuaf rightslist etc. hope this helps -Dean

Re: Problem with Cluster_config.com VMS V7.3-2

Ajay Behari — Sun, 17 Jun 2007 13:41:09 GMT

Hi all,
I mis-interpretted the question:

"Is the node to be a clustered node with a shared SCSI or FIBRE-CHANNEL bus (Y/N)"

It is related to the I/O subsystem & not to cluster-interconnect as I thought.Answering yes to this question solved my problem.

Thanks to all who took the time to respond to my post.

Regards,
Ajay.