#!/bin/bash
##
## Script to deploy the kube-dns pod to the cluster
##
echo "Taking the kube-dns.yaml file from the Kubernetes the Hard Way author"
wget https://storage.googleapis.com/kubernetes-the-hard-way/kube-dns.yaml
kubectl create -f kube-dns.yaml --kubeconfig=certs-dir/admin.kubeconfig

sleep 2
kubectl get pods -l k8s-app=kube-dns -n kube-system -o wide --kubeconfig=certs-dir/admin.kubeconfig

echo "Verifying this has worked"
kubectl run busybox --image=busybox --kubeconfig=certs-dir/admin.kubeconfig --command -- sleep 3600 

echo "Is the busybox pod running?"
kubectl get pods -l run=busybox --kubeconfig=certs-dir/admin.kubeconfig

echo "Get the pod name"
POD_NAME=$(kubectl get pods -l run=busybox --kubeconfig=certs-dir/admin.kubeconfig -o jsonpath="{.items[0].metadata.name}")

echo "Is the DNS pod functional?"
kubectl exec -ti --kubeconfig=certs-dir/admin.kubeconfig $POD_NAME -- nslookup kubernetes