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  • 1.  Use of CCDT servicer with IBM MQ and Native HA

    Posted 18 hours ago

    I have an IBM MQ uniform cluster consisting of two qmgrs.  Along with these we have a HTTP service that supplies the clients with the CCDT to use when connecting.  

    I'm currently looking into the modifications I will need to add Native HA to this configuration, specifically as it relates to the CCDT.  What I read is that when a failover occurs, or when the active/recovery groups change (as in a switchover), the CCDT must be updated with the new hostnames for the active group.  I'm wondering if there is a way to pre-enter this information so the process of switching is automated from the CCDT point of view.   In other words, when the active group changes is there a way to supply the CCDT info in advance such that they find the group and reconnect?

    Another solution is for our CCDT service to detect that a change has occurred and react by returning the updated CCDT.  Can the CCDT service request notification whenever a new active group comes online?  

    Thanks



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    Jim Creasman
    Enterprise Modernization Architect
    Primerica
    Raleigh NC
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  • 2.  RE: Use of CCDT servicer with IBM MQ and Native HA

    Posted 4 hours ago

    Hi Jim,

    Yes there is. The host/port combo in the Json CCDT is an array. So for the same queue manager you can enter 6 values (3 primaries and 3 secondaries(DR)... Make sure you enter the preferred values first, this minimizes the re-connection time as each connection is tested in sequence.

    Hope it helps



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    Francois Brandelik
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    Original Message


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