Add a kubectl config entry for a cluster in Google Cloud

With the gcloud SDK one can add a cluster configuration int the kubectl config with the following command:

gcloud container clusters get-credentials CLUSTER_NAME \
    --zone ZONE_NAME --project PROJECT_NAME

If you’re already authenticated with gcloud against the right project and the right zone, the following command is good enough:

gcloud container clusters get-credentials CLUSTER_NAME

At this point the current context is set to the target cluster and one can get cluster informations with kubectl.