My goal is to list environment variables in my wordpress pod
kubectl get pods
wordpress-77f45f895-lxh5t 1/1 Running 993 92d
wordpress-mysql-7d4fc77fdc-x4bfm 1/1 Running 87 92dAlthough the pod is running
kubectl exec wordpress-77f45f895-lxh5t env
error: unable to upgrade connection: container not found ("wordpress")If I try the other one
kubectl exec wordpress-mysql-7d4fc77fdc-x4bfm env
Unable to connect to the server: net/http: TLS handshake timeoutMy services
wordpress NodePort 10.102.29.45 <none> 80:31262/TCP 94d
wordpress-mysql ClusterIP None <none> 3306/TCP 94dWhy is container not found?
by looking at your output, I think your containers are crashing. first pod crashed 993 times and the second one crashed 87 times. You can check logs of the containers/events of the pods
kubectl logs {{podname}}: for pod logs
kubectl describe pod {{podname}} for detailed description.
As suggested by @mdaniel in comment check for ports also.
Are you able to access application on nodePort?