9.7 Issuing JP1 events in a cluster environment
JP1 events are always issued from JP1/IM - Service Support via JP1/Base. Therefore, when you run JP1/IM - Service Support on a logical host of a cluster system, JP1/Base must also be running on the same logical host. If you run JP1/IM - Service Support and JP1/Base on different hosts, when a failover occurs only on the logical host on which JP1/Base is running, JP1/IM - Service Support will not be able to issue JP1 events.
The following figure shows the flow of issuing JP1 events on the primary node of a cluster.
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The above figure assumes that the primary node on a physical host (host01) is active. In this case, if an Item is registered in the logical host (hostA), JP1 events are issued via the JP1/Base running on the primary node.
The following figure shows the flow of issuing JP1 events on the secondary node of a cluster.
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The above figure assumes that the secondary node on a physical host (host02) is active. In this case, if an Item is registered in the logical host (hostA), JP1 events are issued via the JP1/Base running on the secondary node.