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| OS(AIX) Firmware upgrade on two full repos qmgr |
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| vadivem |
 Posted: Mon Nov 26, 2012 1:36 am Post subject: OS(AIX) Firmware upgrade on two full repos qmgr |
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Apprentice
Joined: 03 Aug 2011
Posts: 25
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Hi expertise,
I have a cluster with two full repos(QM1 & QM2) and serveral partial repos.
Aix team wants to do firmware upgrade on one of the full repos queue manager(QM1).
Do I need to take off the one full repos queue manager(QM1) from cluster? Please advise. |
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| exerk |
| Posted: Mon Nov 26, 2012 4:09 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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My advice is yes, and also maybe think of demoting it to a PR first and migrate one of the other PRs to take its place as an FR; belt-and-braces-just-in-case.
Other advice will soon follow I'm sure...
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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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| PeterPotkay |
| Posted: Mon Nov 26, 2012 12:57 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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I'll disagree with exerk about demoting it and promoting another PR to FR temporarily. Its not needed and is not without risk.
The cluster will function 100% with one FR, assuming all PRs have network connectivity with both FRs, which they should.
The cluster will route application messages even if both FRs are out, but no cluster changes will be propogated throughout the cluster until one of the FRs are once againa available.
If the FR on the server about to get maintenance is hosting any application clustered queues, ideally you should suspend that QM from the cluster, wait for any in flight messages to be processed, then proceed with maintenance.
You may get messages waiting in System Cluster Transmit Queues on the other FR and the PRs while this FR is unavailable. Treat any alerts on these transmit queues accordingly.
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Peter Potkay
Keep Calm and MQ On |
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| exerk |
| Posted: Tue Nov 27, 2012 2:07 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| PeterPotkay wrote: |
| I'll disagree with exerk about demoting it and promoting another PR to FR temporarily. Its not needed and is not without risk... |
I didn't use the word 'temporarily' - if I feel the need to migrate an FR I'll certainly not do it on a temporary basis.
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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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