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| George Carey |
 Posted: Wed May 06, 2009 4:38 pm Post subject: MQ v6 PubSub |
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Knight
Joined: 29 Jan 2007
Posts: 500
Location: DC
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Have a set of MQv6 qmgrs and brokers set up in broker hierarchy.
A,B,C ... A is root B and C peer leaf node children to A.
Having issues with A wanted to bounce A broker and A qmgr.
Any issues with doing that if application talking to them quiesced.
I.E. can A(root) Broker and associated QMGrs be bounced while other QMGRS B and C in this case with their associated brokers are running without doing harm to broker network. I am a bit gun shy with Broker hierarchy set up .
Would like any insights yeah or nay. I am not talking about deleteing any brokers just bouncing. With no application activity going on.
Rgrds
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"Truth is ... grasping the virtually unconditioned",
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| fjb_saper |
| Posted: Wed May 06, 2009 8:22 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Bouncing should be fine. However as you have other brokers on the box and there is no utility like amqiclen for the broker you cannot free the shared memory for it. Better yet use an MQ cluster network and suspend all qmgrs on that box from the network. You can then stop all brokers, stop MQ and clear the shared memory under the broker service Id and stop and clear shared memory for mq.
Then restart MQ and the broker. 
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MQ & Broker admin |
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| Vitor |
| Posted: Thu May 07, 2009 4:36 am Post subject: Re: MQ v6 PubSub |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| George Carey wrote: |
| Have a set of MQv6 qmgrs and brokers set up in broker hierarchy. |
Do you mean brokers as WMB, or brokers as the pub/sub brokers that come with WMQ?
| George Carey wrote: |
| Any issues with doing that if application talking to them quiesced. |
Pub/sub is just a specialised kind of message routing. Normal rules apply for application connection.
| George Carey wrote: |
| I.E. can A(root) Broker and associated QMGrs be bounced while other QMGRS B and C in this case with their associated brokers are running without doing harm to broker network. |
It should all just come back up; it's just a set of queue managers connected together. Obviously message flow will be interupted while A is down so new topics and so forth will be impacted.
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Honesty is the best policy.
Insanity is the best defence. |
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| George Carey |
| Posted: Thu May 07, 2009 7:53 am Post subject: broker bouncing |
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Knight
Joined: 29 Jan 2007
Posts: 500
Location: DC
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| Quote: |
| "Bouncing should be fine. ..." |
OK, no other major cautionary restrictions ... for bouncing a MQ v6 Broker(engine).
And yes I mean just base MQ server broker engine that comes with the product. I know it should be no B.D. .
But if you try to remove/delete or move a broker in hierarchy the commands and order of the commands and state of the other qmgrs is anything but straight forward and fraught with potential pitfalls.
I haven't used clusters in so long I am rusty ... I will look into it to see if simpler and more robust.
(by the way I thought I had heard that amqiclen was obsolete/deprecated utility ...)
_________________
"Truth is ... grasping the virtually unconditioned",
Bernard F. Lonergan S.J.
(from book titled "Insight" subtitled "A Study of Human Understanding") |
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| Vitor |
| Posted: Thu May 07, 2009 9:25 am Post subject: Re: broker bouncing |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| George Carey wrote: |
| I thought I had heard that amqiclen was obsolete/deprecated utility |
I think I hear things as well sometimes. I adjust my meds and then the voices go away again.... 
I've just checked and amqiclen is even in the v7 docs.
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| George Carey |
| Posted: Thu May 07, 2009 11:13 am Post subject: meds |
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Knight
Joined: 29 Jan 2007
Posts: 500
Location: DC
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I'm adjusting my meds now! 
So no other cautionary tales for broker bouncing ?
_________________
"Truth is ... grasping the virtually unconditioned",
Bernard F. Lonergan S.J.
(from book titled "Insight" subtitled "A Study of Human Understanding") |
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| PeterPotkay |
| Posted: Thu May 07, 2009 5:33 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Open up a PMR and ask if you should ever use amqiclen. You'll get trouted! In current versions of MQ, IBM says there is no reason to ever use amqiclen, unless specifically directed to by Level 2 or Level 3 during a PMR.
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Peter Potkay
Keep Calm and MQ On |
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| George Carey |
| Posted: Fri May 08, 2009 8:32 am Post subject: |
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Knight
Joined: 29 Jan 2007
Posts: 500
Location: DC
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Well there you go !!!
This sounds like what I had heard.
Maybe I don't need to re-adjust my meds after all !!
Rgrds
_________________
"Truth is ... grasping the virtually unconditioned",
Bernard F. Lonergan S.J.
(from book titled "Insight" subtitled "A Study of Human Understanding") |
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