NSX 75711 MONITORING [nsx@6876 comp="nsx-manager" level="WARNING" subcomp="monitoring"] getStub failure: client ac629057-####-####-####-edfa78f81170, application monitoring, java.util.concurrent.ExecutionException: java.util.concurrent.TimeoutException: Channel ClientChannel(vmware.nsx.monitoring.CollectorHostService, 8224493a-####-####-####-2b81b6b54a18) is closed before stream was opened due to Status(code=UNKNOWN, msg=Closed by remote service)
VMware NSX
The procedure in the guide Resetting the Passwords of an Appliance calls for the service nsx-edge-api-server to be stopped, this service in turn stops the service nsx-opsagent-appliance and it does not get started again when the service nsx-edge-api-server is started at the end of the procedure.
This is a known issue impacting VMware NSX.
Workaround
Once the password(s) have been reset and the nsx-edge-api-server service has been started again, start the nsx-opsagent-appliance service, as root user, using the command:
./etc/init.d/nsx-opsagent-applaince start