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MQSeries.net Forum Index » Clustering » Cluster Failover

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bobbee
PostPosted: Wed Jul 27, 2005 12:05 pm    Post subject: Cluster Failover Reply with quote

Knight

Joined: 20 Sep 2001
Posts: 545
Location: Tampa
Say you have a hub and spoke situation and the hub and spokes are in a cluster.

Now my HUB is Active in several cities as DR failovers. Can you have an application (spoke) point to one specific HUB and fail to another, then a third in a predefined sequence. Do I need a Cluster Exit to achieve this.

Can I use one of the BIND options to allocate a primary site and when that isn't available connect to the second.

I guess what I am trying to achieve is sort of a DNS failover using MQSeries Clustering. Is this at all possible?????

bobbee
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wschutz
PostPosted: Wed Jul 27, 2005 12:22 pm    Post subject: Reply with quote

Jedi Knight

Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
With V6, you can specify a "cluster priority" (CLWLPRTY) at the channel and queue level. As long as a higher priorty cluster queue mgr is available, it will be selected by the default cluster workload exit. If it becomes unavailable, then the next lower priority qmgr would be selected. I think this does what you want.

Without providing your own exit, I don't think you can do this in v5.3
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hopsala
PostPosted: Wed Jul 27, 2005 12:59 pm    Post subject: Reply with quote

Guardian

Joined: 24 Sep 2004
Posts: 960
As I in my past have written a cluster exit, I confirm what wschutz said - you cannot do this in 5.3 without writing an exit. 5.3 does round-robin and there's no way of changing it thru configuration.
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