OSMH: Management Station is 'Inactive' Due to mgmt_agent Service Failure After IP Address Change

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Applies To:

Oracle Cloud Infrastructure

OS Management Hub

Symptoms:

The instance acting as the OSMH management station is in 'Inactive' state.

The mgmt_agent.service is in failed state.

# systemctl status mgmt_agent
● mgmt_agent.service - mgmt_agent
   Loaded: loaded (/etc/systemd/system/mgmt_agent.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Thu 2025-05-22 08:23:30 EDT; 1min 16s ago
  Process: 26331 ExecStop=/opt/oracle/mgmt_agent/agent_inst/bin/agentcore stop sysd (code=exited, status=0/SUCCESS)
  Process: 29382 ExecStart=/opt/oracle/mgmt_agent/agent_inst/bin/agentcore start sysd (code=exited, status=0/SUCCESS)
 Main PID: 29460 (code=exited, status=1/FAILURE)
May 22 08:22:14 osmh-mgmt-station systemd[1]: Starting mgmt_agent...
May 22 08:22:14 osmh-mgmt-station agentcore[29382]: Starting mgmt_agent...
May 22 08:22:47 osmh-mgmt-station agentcore[29382]: Waiting for mgmt_agent......
May 22 08:22:52 osmh-mgmt-station agentcore[29382]: .....running: PID:29460
May 22 08:22:52 osmh-mgmt-station systemd[1]: Started mgmt_agent.
May 22 08:23:30 osmh-mgmt-station systemd[1]: mgmt_agent.service: Main process exited, code=exited, status=1/FAILURE
May 22 08:23:30 osmh-mgmt-station systemd[1]: mgmt_agent.service: Failed with result