In Neo we're introducing a system event log to record events that happen across the cluster, see the parent MB, https://issues.couchbase.com/browse/MB-46215 for more details.
For Index we need to capture the following events.
|Index Service Events||Additional Details Needed|
|GSI Index Building||UUID of the GSI Index|
|GSI Index Created||UUID of the GSI Index
How long the initial build took
|GSI Index Dropped||UUID of the GSI Index|
|GSI Index Offline||UUID of the GSI Index|
|GSI Index Online||UUID of the GSI Index|
|GSI Process Crash||Name of process that crashed
PID of crashed process
|GSI Settings Change||Previous Setting and New Setting|