cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

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

What causes connection loss between DT server and Collector?

christopher_teb
Organizer

Hi,

i face this problem of connection loss between DT server and Collector and now is very severe and its PRDUCTION. What could be the issue? I have attached the Collector log collector00.log

Your kind support is appreciated

6 REPLIES 6

Babar_Qayyum
DynaMight Leader
DynaMight Leader

Hello Chris,

What is this IP and Port?

Any firewall in between server and collector?

"2017-01-06 04:36:35 WARNING [DefaultSessionManager] forcing socket close on all outbound connections for session 52.51.83.64:Tunnelled:Deflate:Collector
2017-01-06 04:36:35 INFO [Collector] Server[52.51.83.64:8033] has been disconnected - reconnecting in 15s
2017-01-06 04:36:35 INFO [DefaultSessionManager] successfully closed session 52.51.83.64:Tunnelled:Deflate:Collector
2017-01-06 04:36:50 INFO [Collector] connecting to server at '52.51.83.64:8033:TUNNELED'...
2017-01-06 04:44:34 WARNING [FastConnectionPool] connection Closed-52.51.83.64:8033:Outbound:Tunnelled:Deflate:751d1748-c11e-4db6-9563-76fba658883e was not in pool - unable to remove...
2017-01-06 04:44:34 WARNING [OutOfProcessEventHandler] Exception happened while trying to send buffer. Retry to send buffer...
2017-01-06 04:44:34 WARNING [OutOfProcessEventHandler] com.dynatrace.diagnostics.communication.tcp.exception.CommunicationException: class java.io.InterruptedIOException: Stream read timed out after 300000ms, while executing request: class com.dynatrace.diagnostics.collector.OutOfProcessEventHandler$SendBufferRequest"

Regards,

Babar

christopher_teb
Organizer

Hi Babar,

Yes there is a firewall between the two!

Br,

Chris

Hello Chris,

Just check with your network and security teams if they blocked they port from collector to server by mistakenly.

Secondly check the status of your collector buffer saturation from the start center >> Monitoring >> dynaTrace Collector Sizing.

Regards,

Babar

christopher_teb
Organizer

Thanks Babar,

I will return to them

Br,

Chris

christopher_teb
Organizer

Hi Babar,

I found another issue with the Collector. Please you can find its log attached and advise.

collector00.log

Br,

Chris

Hello Chris,

I had gone through with all the logs and found "Collector. Another thread is currently creating such a connection!"

The similar issue has already been discussed on the community and support suggested them to upgrade the version.

I would say if you can open a support ticket to get their opinion.

Regards,

Babar