.NET agent not able to connect to controller

[CommunityUser]

Hi Experts,

We have few .NET agents which are not able to connect to the controller and are reported down on the dashboard. I am getting below error in the agent logs:

2016-04-01 04:30:29.4546 11844 w3wp 2 9 Warn MetricHandler Metric Reporter Queue full. Dropping metrics.
2016-04-01 04:30:31.8447 21492 w3wp 2 12 Warn ConfigurationChannel Could not connect to the controller/invalid response from controller, cannot get initialization information, controller host [controller02.abc.def.com], port[80], exception [System.Net.WebException: The operation has timed out
   at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context)

Belo is the Agent configuration :

<?xml version="1.0" encoding="UTF-8"?>

-<appdynamics-agent xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

-<controller ssl="false" port="80" host="controller02.abc.def.com">

<application name="APPNAME"/>

<account name="customer1" password="faade46a-6cca-4861-ade1-9c6d01725fa8"/>

</controller>

<machine-agent/>

-<app-agents>

-<IIS>

<automatic/>

<applications/>

</IIS>

</app-agents>

</appdynamics-agent>

I need help in resolving this issue. Thanks

[CommunityUser]

Hi Rohit,

Mertics are dropping means you are overshooting the metrics limit. Please try to reduce the business transaction under 50 per agent and that should help you.

Regards,

Ashutosh

[CommunityUser · Accepted solution]

Agent tries to send the metric to controller every minute, and if there happens any network issue, it keeps the matrics in cache for 3 minutes. In case agent is not able to connect to controller for 3 minutes, it flushed the metric and that is how you get the "dropping metrics" warning.

Regards,