topology_agent does not start

Document ID : KB000113428
Last Modified Date : 10/09/2018
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Issue:
The topology_agent probe does not start and remains in red
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The controller.log error: "Can not start topology_agent, start after probe not enabled (discovery_agent)"

Alarm:
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Environment:
UIM 8.x
Cause:
The topology_agent has a dependency on the discovery_agent (start_after = discovery_agent).
Resolution:
Verify if the discovery_agent is up and running. If discovery_agent is not correctly started, topology_agent will not start.