step-5

Add kube-proxy and access the cluster from the host

Remarks

• Configure kube-proxy, which runs in work nodes and implements part of the Service concept, allowing Pods to be accessible.
• Expose the Deployment using a Service.
• Generate a kubeconfig file to connect to the cluster from the host machine.
  • To keep authentication simple, static tokens are used. The API Server is configured accordingly.

Run it!

1. Start the VM and wait for the configuration. This time don't SSH into it.

   vagrant up
   

2. Verify cluster access

   kubectl get nodes --kubeconfig=.out/kubeconfig
   kubectl get pods --kubeconfig=.out/kubeconfig
   

3. Create the test deployment and wait until the pods are running.

   kubectl apply -f deployment.yaml --kubeconfig=.out/kubeconfig
   kubectl get pods --kubeconfig=.out/kubeconfig
   

4. Check that the test pod is responding. Use the actual IP for your VM.
   • This means that kube-proxy picked up the new Service/Endpoint and reflected its configuration on the node, so that requests to the Service are forwarded to the Pod.

   curl http://{vm-ip}:30006
   

5. Remove the test pod

   kubectl delete -f deployment.yaml --kubeconfig=.out/kubeconfig
   kubectl get pods --kubeconfig=.out/kubeconfig
   

6. Remove the VM

   vagrant destroy