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| Bichu |
 Posted: Tue Oct 11, 2016 3:21 am Post subject: MQ Cluster Anomaly |
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Centurion
Joined: 16 Oct 2011
Posts: 124
Location: London
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I felt an anomaly between the two.
http://www.ibm.com/support/knowledgecenter/SSFKSJ_7.5.0/com.ibm.mq.con.doc/q017230_.htm
Cluster sender channels must only be defined to connect a partial repository to a full repository, or to connect two full repositories together. Manually configuring a CLUSSDR channel that addresses a partial repository, or a queue manager not in the cluster, leads to error messages, such as AMQ9427 and AMQ9428 being issued.
http://www.ibm.com/support/knowledgecenter/SSFKSJ_9.0.0/com.ibm.mq.tro.doc/q039150_.htm
Each cluster sender channel connects to a cluster receiver channel of the same name. If there is no local cluster receiver channel with the same name as the cluster sender channel on the remote queue manager, then it won't work
What do you think?
When I tried the second option, cluster is working for me. Is it a problem as mentioned in first link. |
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| Bichu |
| Posted: Tue Oct 11, 2016 3:36 am Post subject: |
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Centurion
Joined: 16 Oct 2011
Posts: 124
Location: London
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| Of if put in other words, do every cluster receiver channel requires a cluster sender channel or vice versa irrespective of the repositories. |
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| exerk |
| Posted: Tue Oct 11, 2016 4:09 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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There is no anomaly - a SDR channel requires a RCVR channel to which to connect, so a CLUSSDR requires a CLUSRCVR.
The reason that you define CLUSSDRs only to a Full Repository (FR) is because the FR handles the propagation of a Partial Repository's (PR) CLUSRCVR details to all other queue managers in the cluster; PRs then automatically define the CLUSSDR end of the channel pair when required.
The above is really a basic, high-level, explanation, but with clustering I find it helpful if you think along the following lines (again, a generalised high-level explanation):
"FRs know everything about the cluster all of the time, PRs know what they need to know when they need to know it, get that information from a FR, then remember it."
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It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| bruce2359 |
| Posted: Tue Oct 11, 2016 5:37 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| exerk wrote: |
| ...PRs then automatically define the CLUSSDR end of the channel pair when required. |
Bichu, might I suggest that you continue your learning about mq clusters by researching with CLUSSDRA and CLUSSDRB channels.
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Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| Bichu |
| Posted: Tue Oct 11, 2016 6:15 am Post subject: |
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Centurion
Joined: 16 Oct 2011
Posts: 124
Location: London
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Thanks all.
I have created my cluster and it works only after the sender channel to PR has been created in FR. Now I have 1 sender and 1 receiver channel in my PR but have 1 receiver and multiple sender channels in my FR. I have 2 FR's and 3 PR's in my cluster.
Last edited by Bichu on Tue Oct 11, 2016 6:24 am; edited 1 time in total |
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| bruce2359 |
| Posted: Tue Oct 11, 2016 6:20 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Bichu wrote: |
Thanks all.
I have created my cluster and it works only after the sender channel to PR has been created in PR. Now I have 1 sender and 1 receiver channel in my PR but have 1 receiver and multiple sender channels in my FR. I have 2 FR's and 3 PR's in my cluster. |
Please be precise. Do you have SDR channels? Or CLUSSDR channels?
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| Bichu |
| Posted: Tue Oct 11, 2016 6:23 am Post subject: |
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Centurion
Joined: 16 Oct 2011
Posts: 124
Location: London
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| My Apologies. I am talking about CLUSSDR channels and CLUSRCVR channels. |
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| mqjeff |
| Posted: Tue Oct 11, 2016 6:30 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
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| exerk |
| Posted: Tue Oct 11, 2016 6:31 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| Bichu wrote: |
| ...I have created my cluster and it works only after the sender channel to PR has been created in FR... |
Then there is a problem - you should not, repeat not, create any CLUSSDR channels from FRs to PRs.
The basics of clustering are:
1. Create two queue managers and designate each them as a FR;
2. Define CLUSRCVR channels in each FR;
3. Define CLUSSDR channels in each FR, each CLUSSDR to point to the CLUSRCVR of the other FR - only proceed further if it can be verified that each CLUSSDR/CLUSRCVR pair in each FR is communicating correctly;
4. Define n queue managers, as PRs, each with a CLUSSRCVR;
5. In each n PR queue manager, define a CLUSSDR pointing to one of the FRs.
Please post the commands you ran to create the FRs and their cluster channels, that will help us to better understand what you have done and how we can help.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| bruce2359 |
| Posted: Tue Oct 11, 2016 8:22 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Bichu wrote: |
| ...I have created my cluster and it works only after the sender channel to PR has been created in FR... |
Hmmm.
I likely misread this as the CLUSSDRA/B channels were created automatically by MQ cluster internals. I suppose it could also be read as "... after I created..."
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I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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