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| pmane |
 Posted: Sun Nov 04, 2001 10:48 pm Post subject: |
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Acolyte
Joined: 17 Oct 2001
Posts: 50
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I want to have MQ Server on two Solaris machines. But instead of clustering I need to have one of them as a hot standby. It might be crazy thing , but this is one of the requirement from client. I want to make sure that when one server goes down with hardware failure the second (hot standby) takes over. Can I put both of these machines in MQ cluster and make one the channels on of the machines down to get this effect?
Is their any thing like cluster manager , if yes then if machine with that cluster manager(or load balancer) goes down then what will happen. Where can I get some more documentation about the same …
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| bduncan |
| Posted: Mon Nov 05, 2001 10:50 am Post subject: |
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Padawan
Joined: 11 Apr 2001
Posts: 1554
Location: Silicon Valley
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Well, you would have some issues with this setup if you simply used MQSeries clustering to accomplish this. Basically your applications will do one of two things: either put messages to both queue managers following a workload balancing algorithm, or putting messages to a single queue manager, and switching to the other if the first goes down. While the second option may sound like it works for you, it really won't because you can't control which of the two queue managers your application will choose to connect to initially. So you won't really have a hot-standby; both queue managers will be servicing requests. However, you could write your own workload exit; MQSeries clustering has a built-in simple round-robin workload balancing algorithm, but you can override this with something you write. But this can be complex. Perhaps you want to look at one of the many commercial failover products available like Veritas?
Otherwise, I would recommend reading the MQSeries Clustering manual to learn more about how clustering works. The link to the HTML version is:
http://www-4.ibm.com/software/ts/mqseries/library/manualsa/csqzah03/csqzah03tfrm.htm
_________________
Brandon Duncan
IBM Certified MQSeries Specialist
MQSeries.net forum moderator |
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