topic Re: NodeJS proxyless agent unable to communicate with controller in Splunk AppDynamics

NodeJS proxyless agent unable to communicate with controller

Richard_Maybin — Tue, 07 Apr 2020 13:27:33 GMT

I've been attempting to add appdynamics to a set of NodeJS components we have. We use a private AppD Controller within the company firewall running version 4.4.3. I have only been able to get the agent to communicate with the controller via the java proxy on version 4.4.3. Whenever I try to configure libagent:true the agent does start and I get an http error in agent logs (see logs below). I'd additionally tried with different module versions and different nodeJs versions with no luck. Below shows our appD profile added to server.js.

App Dynamics Profile: { controllerHostName: 'XXXXXXXXXXXX',
controllerPort: '8181',
controllerSslEnabled: true,
accountName: 'XXXXXXX',
accountAccessKey: 'XXXXXXXXXXX',
applicationName: 'icg-msst-icgbuild-loki-167539-DEV',
tierName: 'loki-ui',
nodeName: 'loki-ui',
libagent: true,
debug: true }
[DEBUG] Appdynamics agent logs: /tmp/appd/66b173439b00d9f3b30dbc626af4dbd8

NodeJS version: 10.10.0 (build & runtime)

AppD NodeJS agent version: 20.3.1

OS version: Red Hat Enterprise Linux Server release 6.10 (Santiago)

[Log file redacted]

^ Post edited by @Ryan.Paredez. Please do not attach or paste log files into community post for security and privacy reasons.

Re: NodeJS proxyless agent unable to communicate with controller

Piyush_Mundra — Tue, 07 Apr 2020 16:41:58 GMT

Hi Richard,

The libagent needs the reference of the custom certificate in order to connect to the controller over the SSL. Can you please get the controller's certificate in .PEM format and reference the certificate file path in the agent configuration with the help of certificateFile configuration option? Please have a look at the agent configurations at https://docs.appdynamics.com/display/PRO45/Node.js+Settings+Reference

After referencing the controller certificate file, restart the Node application and see if that helps to resolve this issue?

Best Regards,

Piyush

Re: NodeJS proxyless agent unable to communicate with controller

Richard_Maybin — Wed, 08 Apr 2020 11:00:30 GMT

Hi Piyush,

Thanks for the prompt response. I had initially tried certificateFile but not with .PEM format. I've now retried and can successfully communicate with Controller. Should certificate file format also be referenced in Agent settings page? Thanks for the help.