Editing K3s - Kubernetes Simplified (section)

== Cluster Access==
The kubeconfig file stored at /etc/rancher/k3s/k3s.yaml is used to configure access to the Kubernetes cluster. If you have installed upstream Kubernetes command line tools such as kubectl or helm you will need to configure them with the correct kubeconfig path. This can be done by either exporting the KUBECONFIG environment variable or by invoking the --kubeconfig command line flag. Refer to the examples below for details.

Leverage the KUBECONFIG environment variable:
 export KUBECONFIG=/etc/rancher/k3s/k3s.yaml
 kubectl get pods --all-namespaces
 helm ls --all-namespaces
 
Or specify the location of the kubeconfig file in the command:

 kubectl --kubeconfig /etc/rancher/k3s/k3s.yaml get pods --all-namespaces
 helm --kubeconfig /etc/rancher/k3s/k3s.yaml ls --all-namespaces

To access the kubernetes cluster from outside the cluster, copy <pre>/etc/rancher/k3s/k3s.yaml</pre> on your machine located outside the cluster as <pre>~/.kube/config</pre>Then replace the value of the server field with the common name of the K3s server cluster as described above. kubectl can now manage your K3s cluster.