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Configuring the Kubernetes Client - Remote Access

Download and Install kubectl

wget https://github.com/kubernetes/kubernetes/releases/download/v1.3.0/kubernetes.tar.gz

tar -xvf kubernetes.tar.gz

OS X

sudo cp kubernetes/platforms/darwin/amd64/kubectl /usr/local/bin

Linux

sudo cp kubernetes/platforms/linux/amd64/kubectl /usr/local/bin

Configure Kubectl

In this section you will configure the kubectl client to point to the Kubernetes API Server Frontend Load Balancer.

Recall the Public IP address we allocated for the frontend load balancer:

gcloud compute addresses list

NAME        REGION       ADDRESS          STATUS
kubernetes  us-central1  104.197.132.159  IN_USE

Recall the token we setup for the admin user:

# /var/run/kubernetes/token.csv on the controller nodes
chAng3m3,admin,admin

Also be sure to locate the CA certificate created earlier. Since we are using self-signed TLS certs we need to trust the CA certificate so we can verify the remote API Servers.

Build up the kubeconfig entry

The following commands will build up the default kubeconfig file used by kubectl.

kubectl config set-cluster kubernetes-the-hard-way \
  --embed-certs=true \
  --certificate-authority=ca.pem \
  --server=https://104.197.132.159:6443

kubectl config set-credentials admin --token chAng3m3

kubectl config set-context default-context \
  --cluster=kubernetes-the-hard-way \
  --user=admin

kubectl config use-context default-context

At this point you should be able to connect securly to the remote API server:

kubectl get componentstatuses

NAME                 STATUS    MESSAGE              ERROR
controller-manager   Healthy   ok                   
scheduler            Healthy   ok                   
etcd-2               Healthy   {"health": "true"}   
etcd-0               Healthy   {"health": "true"}   
etcd-1               Healthy   {"health": "true"}

kubectl get nodes

NAME      STATUS    AGE
worker0   Ready     10m
worker1   Ready     12m
worker2   Ready     14m

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