We had to build a few new RHEL8 VMs as we have to shutdown old RHEL6 running in a collector role. When entire directory structure was copied over and collector tried to come up it threw an error message. There should be nothing running on port 5001 as netstat -a |grep 5001 returns no results:
10/24/22 10:39:56.512 AM EDT [INFO] [main] [Manager.EMWebServer] Shutting down EM Web Server...
10/24/22 10:39:56.526 AM EDT [INFO] [main] [Manager.EMWebServer] EM Web Server shutdown complete.
10/24/22 10:39:56.949 AM EDT [INFO] [ServicesCheck.Thread1] [Manager.com.timestock.tess.services.scheduler.AgeoutSessionsTask] aged out 0 sessions
10/24/22 10:39:57.409 AM EDT [INFO] [main] [Manager] Shutting down data persistence subsystem
10/24/22 10:39:57.418 AM EDT [INFO] [main] [Manager] Shutting down the Isengard server
10/24/22 10:39:57.424 AM EDT [INFO] [main] [Manager.com.wily.apm.tess.isengard.BizDefUpdatesPublisherServiceBean] Passivated BizDefUpdatesPublisherServiceBean
10/24/22 10:39:57.432 AM EDT [INFO] [main] [Manager.DependencyMapServerBean] DependencyMapServerBean passivate
10/24/22 10:39:57.435 AM EDT [INFO] [main] [Manager.IscopeAlertsExtension] Isengard Alert Extension Bean has been passivated
10/24/22 10:39:57.483 AM EDT [INFO] [main] [Manager] Orderly shutdown complete.
Issue was with Datadog running on port 5001....