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| Anirud |
 Posted: Tue Sep 14, 2004 8:10 am Post subject: MQ Cluster |
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Master
Joined: 12 Feb 2004
Posts: 285
Location: Vermont
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Hi,
I have a qmgr "A" which is up and running. I have a backup for this qmgr, which is also named "A", on another machine which is not running and will be started manually if the main qmgr is down.
I have a cluster environment and added the qmgr to the cluster. Now I would like to add the backup qmgr to the cluster. I know the qmgr names must be unique, but I think this is a different case ( only one qmgr will be running at any given time).
Is it possible? Please let me know how to work this out.
Thanks,
Anirud. |
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| EddieA |
| Posted: Tue Sep 14, 2004 8:57 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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No.
Take a look at the output from a DIS QMGR, for the QMID. This is what is used within a Cluster to identify a QM.
Cheers,
_________________
Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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| JasonE |
| Posted: Tue Sep 14, 2004 8:57 am Post subject: |
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Grand Master
Joined: 03 Nov 2003
Posts: 1220
Location: Hursley
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Having a qmgr in a cluster, and haveing that qmgr powered off all the time seems a great way to cause problems. Having it with the same name as another qmgr in the cluster is a real recipe for disaster...
The problem is that cluster (repository) messages will back up on the transmit queues for the powered off qmgr. Additionally, because the powered off qmgr isnt talking with the cluster, it wont republish its resources or keep its subscriptions up to date. This means when you power it on it will have to go through almost rejoinging the cluster - so why not leave it out the cluster until it has to join anyway!! |
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| Anirud |
| Posted: Tue Sep 14, 2004 10:18 am Post subject: |
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Master
Joined: 12 Feb 2004
Posts: 285
Location: Vermont
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Thanks for the replies.
My aim is to have a backup for the qmgr "A" which is in a cluster. I am a bit confused on how to do this.
tried searching on this site, didn't find relative information yet... still searching...
Please let me know if you have any information.
Thanks. |
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| fjb_saper |
| Posted: Tue Sep 14, 2004 11:30 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Just to make sure we understand correctly what you are saying:
You have a qmgr A in a failover cluster(hardware) and you would like to know what the implications are of having that same queue manager being part of a WebSphereMQ cluster.
Did I get you right on that? |
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| Anirud |
| Posted: Tue Sep 14, 2004 12:12 pm Post subject: |
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Master
Joined: 12 Feb 2004
Posts: 285
Location: Vermont
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No. There is no hardware cluster.
I have a qmgr A which is part of WebSphere MQ cluster.
I think I am not clear with my question.
My question...
I have a qmgr A, which is part of MQ Cluster. I would like to know, what should I do to have a backup to this qmgr?
(Initially I thought of having the same qmgr name, now I know that it's more trouble to have two qmgrs with the same name). |
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| fjb_saper |
| Posted: Tue Sep 14, 2004 12:29 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Have the qmgr with a different name add the other name as an alias which will allow it to receive the messages for the other queue mgr as if they were for him.
Would that help you ? |
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| csmith28 |
| Posted: Tue Sep 14, 2004 6:00 pm Post subject: |
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Grand Master
Joined: 15 Jul 2003
Posts: 1196
Location: Arizona
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Step away from the crtmqm command. You can not have two MQManagers in the same Cluster with the same name much like you cannot have two files with the same name in the same directory.
_________________
Yes, I am an agent of Satan but my duties are largely ceremonial. |
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| jefflowrey |
| Posted: Wed Sep 15, 2004 4:59 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| Anirud wrote: |
No. There is no hardware cluster.
...
I have a qmgr A, which is part of MQ Cluster. I would like to know, what should I do to have a backup to this qmgr?
(Initially I thought of having the same qmgr name, now I know that it's more trouble to have two qmgrs with the same name). |
If you want any sort of "live" backup, you need a hardware cluster.
_________________
I am *not* the model of the modern major general. |
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| Anirud |
| Posted: Wed Sep 15, 2004 9:05 am Post subject: |
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Master
Joined: 12 Feb 2004
Posts: 285
Location: Vermont
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Thanks for the advice.
You guys are very helpful.
Thankyou All. |
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