#appdynamics db agent Connection issue with controller using DB agent

indhumathys — Thu, 10 Apr 2025 05:07:46 GMT

Im using Java 8
java version "1.8.0_202"
Java(TM) SE Runtime Environment (build 1.8.0_202-b08)
Java HotSpot(TM) Client VM (build 25.202-b08, mixed mode)

Downloaded DB agent from the Controller and extraced,
while starting the DB agent it throws exception: Could not connect to the controller/invalid response from controller

Error Message
] ControllerHttpRequestResponse:25 - Fatal transport error while connecting to URL [/controller/instance/UNKNOWN_MACHINE_ID/systemagentregistration]: org.apache.http.NoHttpResponseException: grace202504080038013.saas.appdynamics.com:443 failed to respond
10 Apr 2025 10:10:52,716 WARN [DBAgent-1] RegistrationChannel:128 - Could not connect to the controller/invalid response from controller, cannot get registration information

Re: #appdynamics db agent Connection issue with controller using DB agent

livehybrid — Thu, 10 Apr 2025 09:08:17 GMT

The error indicates the DB agent cannot establish a connection with the AppDynamics Controller, likely due to network issues, incorrect configuration, or SSL/TLS problems.

Verify the Controller URL and port in controller-info.xml or startup parameters are correct (grace202504080038013.saas.appdynamics.com:443).
Ensure the Controller is reachable from the DB agent host (test with telnet or curl). e.g.

curl -v https://grace202504080038013.saas.appdynamics.com

Check if your Java version supports the required TLS version (Java 8u202 supports TLS 1.2 by default).
Validate the account name, access key, and application name in the agent configuration.
If using a proxy, ensure proxy settings are correctly configured.

Check out the following docs for more info: https://docs.appdynamics.com/appd/24.x/latest/en/database-visibility/administer-the-database-agent/install-the-database-agent

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#appdynamics db agent Connection issue with controller using DB agent

Re: #appdynamics db agent Connection issue with controller using DB agent