I installed RKE2 "Air-Gap Install" from here https://docs.rke2.io/install/airgap/ , I started the service ,the service is on and running, but wen i try "kubectl get nodes" it gives me "The connection to the server localhost:8080 was refused - did you specify the right host or port?" , do I need to install the agent as well? what am I doing wrongs?

export KUBECONFIG=/etc/rancher/rke2/rke2.yaml

I think should resolve that issue for you

thanks alot, it solve the problem