Cluster Agent SSL certificate issue for On-Premises Controllers: What should be checked in the Cluster?

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Step-by-Step Guide to Verifying SSL Certificates Using AppDynamics Cluster Agent

In this article, you will learn how to check if there are issues with the SSL Certificate for the On-Premises Controller using the Cluster Agent. Below are the steps you can independently verify in the cluster.

 

Next steps:

1. Check if a Secret containing the certificate named "custom-ssl.pem" is created.
   
2. Check if the Cluster Agent configuration file contains a parameter with the name of the Secret containing the certificate:
   
   1. "cluster-agent.yaml" -> Kubernetes CLI
      
      
   2. "values.yaml" -> Helm Chart
      
      
3. Check if the Cluster Agent pod description contains:
   kubectl describe pod <cluster_agent_pod_name> -n appdynamics
   
   1. Environment variable "APPDYNAMICS_CUSTOM_SSL_SECRET: ssl-cert"
      
   2. Volume mount
      
   3. Volume "agent-ssl-cert"
      
4. Check the presence of "/opt/appdynamics/ssl/custom-ssl.pem" in the Cluster Agent container.
   kubectl exec -it <cluster_agent_pod_name> -n appdynamics -- /bin/sh
   

I hope this article was helpful