Authenticating outside the cluster
This example shows you how to configure a client with client-go to authenticate to the Kubernetes API from an application running outside the Kubernetes cluster.
You can use your kubeconfig file that contains the context information
of your cluster to initialize a client. The kubeconfig file is also used
kubectl command to authenticate to the clusters.
Running this example
Make sure your
kubectl is configured and pointed to a cluster. Run
kubectl get nodes to confirm.
Run this application with:
cd out-of-cluster-client-configuration go build -o app . ./app
Running this application will use the kubeconfig file and then authenticate to the cluster, and print the number of pods in the cluster every 10 seconds:
./app There are 3 pods in the cluster There are 3 pods in the cluster There are 3 pods in the cluster ...
Press Ctrl+C to quit this application.
Note: You can use the
-kubeconfigoption to use a different config file. By default this program picks up the default file used by kubectl (when
KUBECONFIGenvironment variable is not set).
Note: the example only works with the code within the same release/branch.