simple-nginx-deployment.yaml

# a comment
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx
  labels:
    app: nginx          # arbitrary label on deployment
spec:
  replicas: 3
  selector:
    matchLabels:        # labels the replica selector should match
      app: nginx
  template:
    metadata:
      labels:
        app: nginx      # label for replica selector to match
        version: alpine  # arbitrary label we can match on elsewhere
    spec:
      containers:
      - name: nginx
        image: nginx:alpine
        ports:
        - containerPort: 80