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This product reached the end of support date on March 31, 2021.

Error: collector is not listening to agent

suraj_kumar_gup
Inactive

Hi,

Post migration of dynatrace collector from 6.2 to 6.5 we started seeing collector in red color with error message "Error: collector is not listening to agent"

Please let me know how to resolve this issue.

Regards,

Suraj Gupta

8 REPLIES 8

Babar_Qayyum
DynaMight Leader
DynaMight Leader

Hello Suraj,

Did you follow all the steps of migrations especially the manual "tobeMigrated"?

Is this issue with only one collector or all?

Can you upload the collector logs?

Regards,

Babar

suraj_kumar_gup
Inactive

yes, out of 9 collector we are facing only with this collector.

What is in the logs of this collector? Can you upload here to read?

suraj_kumar_gup
Inactive

Seems there is some issue with this portal, unable to upload log file

WoW !!!

Really surprised.

dave_mauney
Dynatrace Champion
Dynatrace Champion

Hi Suraj,

I have had this error in the past due to port collision on the collector listening port, so I would suggest using netstat to verify no other process is listening on that port, and check the collector log for details.

HTH,

dave

suraj_kumar_gup
Inactive

collector00.logcollectorlauncher-114430.log

Hi Dave and Babar,

I've attached collector log in this forum.

@Dave - this port is not assigned to any other process and only we have one collector per host.

It is suprising for me that the issue doesn't occur till i don't include this collector under collector host group.

it is working fine when it is act like an isolated collector.

Regards,

Suraj Gupta

Hello Suraj,

The below information is in your collector's log.

2017-01-13 04:57:53 WARNING [Collector] Could not resolve FQDN for IP '10.50.230.99', using fallback 'DYNPRDEU07' as hostname. Had following exception: com.dynatrace.diagnostics.sdk.net.FqdnResolutionException: Cannot resolve FQDN for IP address '10.50.230.99'

2017-01-13 04:57:53 INFO [Collector] Could not resolve FQDN for 10.50.157.14

2017-01-13 04:57:53 WARNING [Collector] Could not open port 9998 on interface 'dynprdeu07' for collector communication! java.net.BindException: Cannot assign requested address

2017-01-13 04:57:54 WARNING [AgentListener] Specified binding address for Agent Listener not valid: dynprdeu07

Regards,

Babar