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MQSeries.net Forum Index » Clustering » Manually def channel to full repository if one was created

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jayZ
PostPosted: Tue Jan 17, 2017 11:17 am    Post subject: Manually def channel to full repository if one was created Reply with quote

Acolyte

Joined: 03 Jun 2008
Posts: 71

I have a cluster consisting of 3 full repository queue managers (I know the recommendation is 2) and one partial queue manager. Two of the FR queue managers correctly have auto explicit cluster-sender channels defined to the others, but the third has one auto cluster-sender channels. Do I need to create the auto explicit cluster-sender channels on the third in order for that queue manager to receive cluster information? If these queue managers were new, I'd have created them. I'm just not sure what to do after the fact.
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Vitor
PostPosted: Tue Jan 17, 2017 11:43 am    Post subject: Re: Manually def channel to full repository if one was creat Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

jayZ wrote:
I have a cluster consisting of 3 full repository queue managers (I know the recommendation is 2)


Repent! Repent your heresy!

For there are 2 and only 2 full repository queue managers; never shall you define 3 and you shall only define 1 on your way to defining the second.

jayZ wrote:
and one partial queue manager.


So even if you'd followed the recommendation you'd have the partial repository surrounded and outnumbered; do you expect it to come out with it's hands up and surrender?

Why this rather odd (and cumbersome) topology for such a very small cluster?

jayZ wrote:
Do I need to create the auto explicit cluster-sender channels on the third in order for that queue manager to receive cluster information?


Yes. You need manually defined cluster channels linking all 3 repositories. Which with more than 2 FRs rapidly negates the value of a cluster.

jayZ wrote:
If these queue managers were new, I'd have created them.


If I found a cluster like this, it would probably have an embarrassing and entirely unavoidable accident that allowed it to be redefined properly.

jayZ wrote:
I'm just not sure what to do after the fact.


None of the FRs know if they're new or old.
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Honesty is the best policy.
Insanity is the best defence.
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jayZ
PostPosted: Tue Jan 17, 2017 11:48 am    Post subject: Reply with quote

Acolyte

Joined: 03 Jun 2008
Posts: 71

Thanks Vitor for the informative and hilarious response. With this, I'll either just demote the third FR or create the channels to make it a proper FR, leaning towards the former.
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Vitor
PostPosted: Tue Jan 17, 2017 12:31 pm    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

jayZ wrote:
With this, I'll either just demote the third FR or create the channels to make it a proper FR, leaning towards the former.






Salvation can still be yours. Be sure to burn some incense to cleanse your aura & pop some crystals around.
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Insanity is the best defence.
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exerk
PostPosted: Wed Jan 18, 2017 12:13 am    Post subject: Reply with quote

Jedi Council

Joined: 02 Nov 2006
Posts: 6339

Vitor wrote:
jayZ wrote:
With this, I'll either just demote the third FR or create the channels to make it a proper FR, leaning towards the former.






Salvation can still be yours. Be sure to burn some incense to cleanse your aura & pop some crystals around.

Just consider yourself lucky that Vitor didn't offer to scrub you down with a yard brush
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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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Vitor
PostPosted: Wed Jan 18, 2017 5:36 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

exerk wrote:
Vitor wrote:
jayZ wrote:
With this, I'll either just demote the third FR or create the channels to make it a proper FR, leaning towards the former.






Salvation can still be yours. Be sure to burn some incense to cleanse your aura & pop some crystals around.

Just consider yourself lucky that Vitor didn't offer to scrub you down with a yard brush


Well if you will go messing around with that stuff......
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JosephGramig
PostPosted: Fri Jan 20, 2017 10:23 am    Post subject: Reply with quote

Grand Master

Joined: 09 Feb 2006
Posts: 1230
Location: Gold Coast of Florida, USA

Since you have this unfortunate configuration, you cannot know if your cluster is fragmented (which it certainly is).

Demote all FRs but one to which the other three have explicit CLUSSDR channels to it. Then REFRESH CLUSTER(bla) REPOS(YES) at the three PRs.

Then pick one Qmgr to be the second FR but first define an explicit CLUSSDR from FR1 to the Qmgr that will be FR2. Now promote the second Qmgr to be FR2.

Only this way can you be sure the two FRs match (and they need to match).

Last point: If the two FRs are only FRs and have no application queues, then they are highly available without you doing anything else and you should never have to touch them again except for upgrades (which FRs should always be the first to be upgraded).

If your employer will not allow you to do this then:

Hop on the bus, Gus. Make a new plan Sam. Drop off the key Lee. Just get yourself free.
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