Symptoms:
- Guest Introspection service status shows as "Warning", for particular ESXi hosts
- Removing and re-adding the host to the cluster does not resolve the issue.
- Elements of GI do not prepare properly (vswitch creation, USVM may now power on, mux connect may not establish)
- Exceptions found in the vsm.log of NSX manager regarding EventHistoryCollector object not being found:
2021-02-04 10:56:30.470 CET INFO VcEventsReaderThread VcEventsReader$VcEventsReaderThread:356 - - [nsxv@6876 comp="nsx-manager" level="INFO" subcomp="manager"] Caught exception:(vmodl.fault.ManagedObjectNotFound) {
vsm.log- faultCause = null,
vsm.log- faultMessage = null,
vsm.log- obj = ManagedObjectReference: type = EventHistoryCollector, value = session[523efa74-####-####-####-########60c]52ae0944-####-####-####-########133, serverGuid = DAD00276-####-####-####-########ADB
vsm.log-}