To make sure that everything is in place, let's go ahead and carry out some checks:

1. Install busybox to  check and validate the Kubernetes deployments:

$ kubectl create -f https://k8s.io/examples/admin/dns/busybox.yaml

2. Now install the hostname deployment. First, create a deployment:

$ kubectl run hostnames --image=k8s.gcr.io/serve_hostname 
                        --labels=app=hostnames 
                        --port=9376 
                        --replicas=3

3. Next, create a service:

$ kubectl expose deployment hostnames --port=80 --target-port=9376

4. Finally, perform a sanity check for the cluster. Check the pod with the following:

$ kubectl get pods
NAME      READY   STATUS    RESTARTS   AGE
busybox   1/1     Running   0          13s