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| MQ Clustering on Solaris with Veritas VCS |
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| ipmqadm |
 Posted: Thu Aug 07, 2008 6:05 am Post subject: MQ Clustering on Solaris with Veritas VCS |
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Acolyte
Joined: 18 Apr 2007
Posts: 68
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We are investigating implementing MQ Clustering on our Solaris servers with the Veritas VCS in either an active/active configuration or an active/passive configuration.
After going thru ALL of the documentation provided by IBM and Veritas, it APPEARS that for an active/active configuration the two full repo QM's would need to have different QM names, but for the active/passive configuration the two full repo QM's would need to have the same QM name.
Has anyone implmented the active/active or active/passive VCS HA environment on Solaris? Can you provide any insight into this issue regarding the different HA configs? |
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| mqjeff |
| Posted: Thu Aug 07, 2008 6:20 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| The difference between active/active and active/passive is that active/active is actually two active/passive setups, that overlap each other. |
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| exerk |
| Posted: Thu Aug 07, 2008 6:30 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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My understanding of Active/Active is two queue managers, each running on one of the nodes of the hardware cluster. In the event of single node failure, the queue manager on the remaining node provides service until the queue manager from the failed node is mounted on the remaining active node and resumes service. Hence the unique names requirement of the queue managers. Once the failed node is restored, the queue manager can be 'failed' back to that node to restore hardware load balancing.
My understanding of Active/Passive is a single queue manager running on a node, and in the event the node fails the other node is ready as a 'hot' standby on which the queue manager from the failed node will be mounted.
| Quote: |
| ...but for the active/passive configuration the two full repo QM's would need to have the same QM name... |
If my understanding is correct (unfortunately it too often is not) of the above quote, the queue manager would be the same queue manager but mounted on one node or the other.
I've done Active/Passive (my interpretation) on AIX with VCS and we had just the one queue manager, which could be on either node. At my current shop we'll be implementing Active/Active (again, my interpretation) on AIX using HACMP with a queue manager on each node.
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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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