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MQSeries.net Forum Index » General IBM MQ Support » Pub Sub Topology question

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PeterPotkay
PostPosted: Thu Jul 22, 2010 2:17 pm    Post subject: Pub Sub Topology question Reply with quote

Poobah

Joined: 15 May 2001
Posts: 7722

Publisher is an app that has multiple instances. One instance connects to QM1 and another connects to QM2.

The subscribers will be connected to QM3.

The MQ Pub Sub Broker only runs on QM3.

There are regular SNDR / RCVR channels between QM1 / QM2 and QM3, and there are multiple hops between QM1 / QM2 and QM3.

Is there anyway to make this work? Can the multiple instances of publishers remotely register with QM3? And then send publications into remote queues on QM1 / QM2 that aim at the stream queue on QM3?

Or do we have to build a little publisher app connected to QM3 that listens for plain MQ messages from QM1/QM2 and then publishes them directly to QM3?
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mvic
PostPosted: Thu Jul 22, 2010 2:43 pm    Post subject: Re: Pub Sub Topology question Reply with quote

Jedi

Joined: 09 Mar 2004
Posts: 2080

v7 distributed pubsub should allow this to work with minimal setup. If I understand it correctly, that is.

Since you mention SDR/RCVR I guess you've ruled out a cluster.. in that case I think you can still do distributed pubsub but you would have to have a child/parent hierarchy.

I think you'd need CHILD/PARENT settings on the qmgr.
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PeterPotkay
PostPosted: Thu Jul 22, 2010 3:30 pm    Post subject: Reply with quote

Poobah

Joined: 15 May 2001
Posts: 7722

Forgot to mention all QMs involved are MQ 6 and we need to make it work with MQ 6.

MQ 7 will not happen prior to the project going live.

Quote:

I think you'd need CHILD/PARENT settings on the qmgr.


I'm not familiar with that QM setting.
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mqjeff
PostPosted: Thu Jul 22, 2010 5:41 pm    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447

http://publib.boulder.ibm.com/infocenter/wmqv6/v6r0/index.jsp?topic=/com.ibm.mq.amqnar.doc/ps10360_.htm

Note that is for v6.

But note that it also requires that you are running a "broker" on all 3 qmgrs.

If you take some steps, you may be able to avoid this by careful definition of qremote and qalias on the three brokers. But using the hierarchy is going to be a lot easier.
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PeterPotkay
PostPosted: Thu Jul 22, 2010 6:06 pm    Post subject: Re: Pub Sub Topology question Reply with quote

Poobah

Joined: 15 May 2001
Posts: 7722

PeterPotkay wrote:

The MQ Pub Sub Broker only runs on QM3.


I'm looking for a solution that does not involve enabling Brokers all over the place.
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fjb_saper
PostPosted: Thu Jul 22, 2010 7:50 pm    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

When creating your TCF you need to specify the BROKER qmgr and it may be a different qmgr from the one you're attaching to.

Check TCF definition. This implies that you have a default path between attached qmgr and broker qmgr, and vice versa.

If you want a distributed type of publish you will need a cluster and a collective. We set up a system with no single point of failure, including for pub/sub (get my professional email from Jeff and ping me if you need more details, I see PMs have been disabled...)
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