Kubernetes dashboard

To add a dashboard to your cluster we simple have to execute this command:

kc create -f https://rawgit.com/kubernetes/dashboard/master/src/deploy/kubernetes-dashboard.yaml

To access the dashboard we've to find out the NodePort of the service.

kc describe --namespace kube-system svc kubernetes-dashboard | grep NodePort:

NodePort:       <unset> 31668/TCP

In this case that's 31668.
Now we can access the dashboard on:

http://disruptor.ninja:31668

Don't expose the service over an NodePort that's a security risk.

Access the dashboard without exposing it

We can access the dashboard without exposing it. Therefore we've to delete the existing service.

kc delete service --namespace kube-system kubernetes-dashboard

Then we've to create a dashboard service without a NodePort:

kind: Service
apiVersion: v1
metadata:
  labels:
    app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kube-system
spec:
  ports:
  - port: 80
    targetPort: 9090
  selector:
    app: kubernetes-dashboard

Now we can start this service:

kc create -f service.yml

To access the service we've to proxy the internal cluster traffic to localhost:

kc proxy

In the service we've defined the port 80. Therefore we can access the dashboard on:

http://localhost:8001/ui