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| Gilly |
 Posted: Tue Jul 27, 2004 3:26 am Post subject: Cluster QMs in different network domains |
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Novice
Joined: 27 Jul 2004
Posts: 10
Location: UK
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Hi,
I want to create a cluster containing NT and W2K QM servers across different network domains. Has anybody advice on how to handle the access between the different domains? At present, in test, I have two QMs, one in each domain, with only one holding a full repository just for simplicity in testing.
On each QM, I have created queues and shared them in the cluster. The repository QM (QMA) can see the cluster queue hosted on QMB, but QMB cannot see the queues hosted on QMA. When I try to connect to the cluster in the Explorer on QMB, I get the AMQ4043 error and when QMB is first accessed I get the warning about AMQ4515.
Is this possible? If so, advice welcome as I am a (very) part time inexperienced MQ administrator. |
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| sebastianhirt |
| Posted: Tue Jul 27, 2004 4:17 am Post subject: Cluster QMs in different network domains |
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Yatiri
Joined: 07 Jun 2004
Posts: 620
Location: Germany
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Hi,
It is possible. We are also having queuemanagers across different domains. As far as I know the only thing that you have to make sure is that they get IP connection to each other.
Do you get succesfull pings between the channels?
I am also getting 4515. But I get this on all of our clusters. I think this is only a displaying problem of MQ-Explorer. (Advice me if I am wrong!)
When and where do you get the 4043?
In the past I have also figured that not seeing Objects in the MQ-Explorer does not mean necessarily that they are not there 
Have you tried to put a message to the cluster queue so far?
If yes does it reach it's destination?
cheers so far
Seb |
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| Gilly |
| Posted: Tue Jul 27, 2004 5:24 am Post subject: |
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Novice
Joined: 27 Jul 2004
Posts: 10
Location: UK
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Hi,
Thank you for your reply. In answer to your questions, the channels do ping OK. I can also post a message from QMA onto the queue hosted by QMB. But the queues hosted on QMA are not visible on QMB.
Do you take any special actions in the local MQM group, or are there additional actions required to make the cluster queues visible on the QM that does not hold the full repository? |
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| OmPat |
| Posted: Tue Jul 27, 2004 5:46 am Post subject: |
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Apprentice
Joined: 20 Jul 2004
Posts: 33
Location: Charlotte
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If there is connectivity in the clusters channels ( Meaning Channels are up and running) there should not be any problem for the partial repository QM to see the cluster queues. FYI you can see the cluster queues in the runmqsc using DISPLAY QCLUSTER(*) CLUSTER(YOUR_CLUSTER_NAME)
Njoy...
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| sebastianhirt |
| Posted: Tue Jul 27, 2004 5:56 am Post subject: |
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Yatiri
Joined: 07 Jun 2004
Posts: 620
Location: Germany
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If the ping is working, you can put messages to the clusterqueue and they arrive at least the connection is OK...
I am doing nothing special to the user- thing....
Don't see the cluster queues with the MQ explorer that is installed directly on the server. Though I am able to see them if I am connecting to the queuemanager remotely (Using the mmc that is installed on my local PC).
You might want to try that also... I am quite sure there you can see them...
I'll browse trough the IBM Homeoage later... Maybe this is a well known bug...
But if somebody has a solution for that displaying problem, I would be also interested... |
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| sebastianhirt |
| Posted: Tue Jul 27, 2004 6:00 am Post subject: |
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Yatiri
Joined: 07 Jun 2004
Posts: 620
Location: Germany
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| OmPat wrote: |
If there is connectivity in the clusters channels ( Meaning Channels are up and running) there should not be any problem for the partial repository QM to see the cluster queues. FYI you can see the cluster queues in the runmqsc using DISPLAY QCLUSTER(*) CLUSTER(YOUR_CLUSTER_NAME)
Njoy... |
Also thought about that... But then I am also only seeing the shared queues that are phisically on the same server |
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| Gilly |
| Posted: Tue Jul 27, 2004 6:08 am Post subject: |
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Novice
Joined: 27 Jul 2004
Posts: 10
Location: UK
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Thanks, all.
I can ping the channels that I have explicitly created between the QMs, but there are a variety of system created channels. Could the problem be in there? |
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| sebastianhirt |
| Posted: Tue Jul 27, 2004 6:36 am Post subject: |
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Yatiri
Joined: 07 Jun 2004
Posts: 620
Location: Germany
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| Gilly |
| Posted: Tue Jul 27, 2004 9:11 am Post subject: |
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Novice
Joined: 27 Jul 2004
Posts: 10
Location: UK
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| Thanks, Seb. Much appreciated - this is a useful link. I will let you know how I get on, when I get time to try this out. |
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| Gilly |
| Posted: Tue Aug 17, 2004 4:10 am Post subject: No problem |
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Novice
Joined: 27 Jul 2004
Posts: 10
Location: UK
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The information that Seb gave proved useful. Even though I could not see the queue on the partial repository QM, once it had been accessed by writing to it, then it became visible. Very odd, but at least it works.
Thx. |
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| PeterPotkay |
| Posted: Tue Aug 17, 2004 7:55 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Gilly, its not to0 odd. Thats the way clustering works. When you create a new queue on QM1 and cluster it, QM1 tell the Full Repositories right away. At this point QM1 and the FR QMs know about it. Consider a cluster of 1000 QMs, most that will never use that new queue you just made. Why should QM1 and/or the FRs waste effort advertising this new queue? Only when one of those thousand QMs requires access to the queue does the FR QM send out the info, at which point you would be able to "see" it on the other QM.
_________________
Peter Potkay
Keep Calm and MQ On |
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| Gilly |
| Posted: Tue Aug 24, 2004 9:37 am Post subject: |
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Novice
Joined: 27 Jul 2004
Posts: 10
Location: UK
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Peter.
Good point and well presented! So long as the messaging works, I'm happy, and you are right, it does make sense. I'm just trying to find out what is normal behaviour for MQ.
Regards,
Gilly |
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