Symptom

There are cases where FDM UI gets inaccessible and the browser shows an error similar to: 503 - Service Unavailable

Conditions

Workaround

Run the following command (this will help to further isolate the root cause of the issue) # kill -3 `pidof java` Then do: # pmtool restartbyid tomcat # pmtool restartbyid httpsd Finally, you can collect a Troubleshoot file and provide to Cisco TAC for further analysis. Or upgrade to a newer software version

Further Problem Description