Rolled out a new hub but the discovery agent probe keeps crashing with below error:
Aug 24 10:00:42:189 [4980] Controller: Max. restarts reached for probe 'discovery_agent' (command = <startup java>)
Also other java probes like prediction_engine and snmpcollector do not show ports or PID on this hub
Release : 20.3
Component : UIM - HUB
In hub server the robot.cfg was configured with below custom keys to change the hub robot default ports
controller_port = 481xx
spooler_port = 481xx
Changing non default port on hub robot is not a supported configuration for controller and spooler
After removing the above keys the java probes on the hub server started correctly