Configure WSO2 APIM Analytics on Cluster environment
In APIM standalone setup single node used to configure for analytics. But different APIM component uses that configuration for event publishing or summary data retrieving from the summary database. But in a cluster environment[1] we can configure it per node.
So here are the components or profiles[1] of the APIM that can run on separate nodes.
But not all the nodes need to be configured for Analytics. And also not all the analytics enabled node are publishing events or read summary tables.
Here the summary of the node’s analytics usage
Profile
Need to Enable
Event Published
Read Stat DB
Gateway manager
YES only if accept requests
YES only if accept requests
NO
Gateway worker
YES
YES
NO
Key Manager
NO
NO
NO
Traffic Manager
NO
NO
NO
API Publisher
YES
NO
YES
API Store
YES
YES
YES
So Key manager and Traffic manager, no need to enable analytics since it neither read or publish statistics.
But if it is either publish or fetch stat you need to enable analytics in that node.
But some node(Gateway) only published events and not reading from statistics databases. So, in that case, we can skip the WSO2AM_STATS_DB Datasource configuration.
But some nodes like publisher only read statistics databases but not publishing events. So you can disable event publisher initialization at startup by setting SkipEventReceiverConnection value to true.
For more about APIM analytics configuration please refer official docs[3]
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