DNS server

Now we will provision our DNS server, which will be provided by Core DNS, an open source DNS server based on plugins. Let's set this up using the following command:

johndoe@management-vm$ kubectl create -f https://raw.githubusercontent.com/dsalamancaMS/CoreDNSforKube/master/coredns.yaml

Check the DNS pods with the following command:

johndoe@management-vm$  kubectl get pods -n kube-system

With the DNS server pods created, we have successfully finished the installation of our Kubernetes cluster. If you want, you can create the following deployment to test the cluster one more time:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80

Now that we have seen the steps needed to create a cluster from scratch, I want to talk a little bit about managed Kubernetes solutions.