Cannot Discover and Hubs or Robots with the discovery_server probe

Document ID : KB000112353
Last Modified Date : 28/08/2018
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Issue:
Cannot discover any hubs or robots with the 8.52 discovery_server.  Only message recorded in the discovery_server log is the following INFO message:

com.nimsoft.discovery.common.queue.hub.HubQueueListener - ProbeDiscoveryHubQueueListener thread interrupted for probe_discovery
Environment:
UIM 8.51 SP1
discovery_server 8.52
Cause:
See the following in the discovery_server.log file:

28 ago 2018 16:51:37,847 [probeTask-1] INFO com.nimsoft.discovery.common.queue.hub.HubQueueListener - ProbeDiscoveryHubQueueListener thread interrupted for probe_discovery

Suspect corrupted discovery_server probe files.
Resolution:
1.  Deactivate the discovery_server probe
2,  Delete the discovery_server probe directory and its contents
3.  Redeploy the 8.52 discovery_server probe to the primary hub