Using CustomAccessKey with Applications auto-instrumented by Cluster Agent

[#1]

Having the flexibility to use different AccessKey for different applications you auto-instrument with Cluster Agent is essential.

This flexibility was introduced with the latest versions of the Cluster agent.

Follow these steps:

1. Un-instrument your application.
2. Create a new secret with the accessKey with the below command:
   

   kubectl -n appdynamics create secret generic <secret-name> --from-literal=<custom-Controller-key-name>=<key-value>​

3. In this command <key-value> will be your AccessKey. For example:
   

   kubectl -n appdynamics create secret generic abhi-java-apps --from-literal=controller-key=xxxxx-fb91-4dfc-895a-xxxxx​

4. I modified my yaml and in the specific instrumentationRule section I added:
   

   - namespaceRegex: abhi-java-apps
         language: java
         matchString: tomcat-app-abhi-non-root
         appNameLabel: app
         runAsUser: 1001
         runAsGroup: 1001
         customSecretName: abhi-java-apps
         customSecretKey: controller-key
         imageInfo:
           image: "docker.io/appdynamics/java-agent:latest"
           agentMountPath: /opt/appdynamics
           imagePullPolicy: Always​

5. customSecretName is the secret name and customSecretKey is the Key for that secret. After this, I re-instrumented my application, and in the Cluster agent logs I confirmed
   

   [INFO]: 2024-08-19 14:45:09 - deploymenthandler.go:262 - custom secretName is %s  and is %s %!(EXTRA string=abhi-java-apps, string=controller-key)​

6. Also, when I exec inside the application pod and grepped for env | grep -i Access, i confirmed that this AccessKey is used:
   

   wso2carb@tomcat-app-abhi-non-root-5d558dddf4-rllzc:/usr/local/tomcat/webapps$ env | grep -i Access
   APPDYNAMICS_AGENT_ACCOUNT_ACCESS_KEY=xxxxx-fb91-4dfc-895a-xxxxx
   JAVA_TOOL_OPTIONS=-Xmx512m -Dappdynamics.agent.accountAccessKey=xxxxx-fb91-4dfc-895a-xxxxx -Dappdynamics.agent.reuse.nodeName=true -Dappdynamics.socket.collection.bci.enable=true -javaagent:/opt/appdynamics-java/javaagent.jar​

Additional Resources

• Use Custom Access Key