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Question by suraj g. · Aug 18, 2015 at 07:59 AM · agent collector

why agent going to offline even when server is up and running fine

Team, We are facing agent disconnect issue frequently in one collector. we checked from network side and there is no packet drop loss and even in server, dynaTrace process is running fine. Just want to understand on which parameter collector consider agent as in disconnected state on linux server and what is pooling interval time for reconnect and also like to understand on what time interval agents sends data packet to collector. Agent - JVM. Thanks and Regards, Suraj Gupta

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Answer by Christian S. · Aug 18, 2015 at 04:04 PM

hi Suraj,

as Asad said, the Agents never intentionally disconnect from the Collector/Server.

if it does it's most of the times a network issue. you don't have a load balancer in use, right?

the logs you posted are from the Collector, but we would need the logs from the Agent, please. this log only tells us that the Agent is reconnecting for some reason. please use the System Information dashlet and go to down to the connected agents and collect the Agent logs from there.

this should give us some more hints about the problem.

thx, Christian

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Answer by suraj g. · Aug 19, 2015 at 08:00 AM

Thanks Chris,

I tried to collect log from agents but i am amazed to see its in unreadable format and logs are as well not updated properly.

Do you have any idea how to get rid of this issue? agent-logs.jpg Please have a look into the image which i attached Thanks, Suraj Gupta


agent-logs.jpg (115.3 KiB)
agent-logs.jpg (115.3 KiB)
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avatar image Christian S. · Aug 19, 2015 at 10:58 AM 0
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wow, that looks weird! I'm wondering if there's maybe some very strange (asian?) character set in use?

do you maybe have access to the filesystem of those machines to take a look at those log files (<DT_install_dir>/log) if they look the same? you could also just collect an archive via right-click in the client, as it may be just an issue with the DT client.

anyway, I suggest to open a support ticket for this behavior.

best, Christian

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Answer by suraj g. · Aug 18, 2015 at 01:21 PM

2015-08-17 14:48:17 INFO [AgentPeer] Hybris_HYBECMPRDAP09@hybecmprdap09:7775, agentId: 1d79f3d8, Version: 6.1.0.8154 uses:

2015-08-17 14:48:17 INFO [AgentPeer] System Profile : Production

2015-08-17 14:48:17 INFO [AgentPeer] Configuration : Default

2015-08-17 14:48:17 INFO [AgentPeer] Agent Group : GOE Hybris APAC

2015-08-17 14:48:17 INFO [AgentPeer] Agent Startup Time: Tue Aug 04 19:49:13 CEST 2015

2015-08-17 14:48:17 WARNING [ClassCacheReadingThread] Unable to resolve all required meta classes from class cache! Suppressing this warning for another 60000 ms.

2015-08-17 14:48:17 INFO [AgentListener] Using recovery information to reconstruct Hybris_HYBECMPRDAP09@hybecmprdap09:7775

2015-08-17 14:48:17 INFO [AgentPeerPool] added agent 'Hybris_HYBECMPRDAP09@hybecmprdap09:7775' to pool - number of agents: 16 Agent logs attached guys, can any1 say the exact issue here. i can see class cache issue here. if any1 understand this log then please let us know.

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Answer by Asad A. · Aug 18, 2015 at 01:15 PM

Suraj

The agent in the JVM never disconnects from the Collector. It is constantly connected to the collector. Can you check the agent log files to see any errors in it?

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avatar image suraj g. · Aug 18, 2015 at 01:22 PM 0
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Thanks Asad, attached some logs, can you please have a look and let me know if you understand what exactly caused agents to be disconnected from the collector?

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