Hello world HPA for kubernetes

hello-world-hpa.yaml

---
kind: Service
apiVersion: v1
metadata:
  name: hello-world-hpa
  labels:
    app: hello-world
spec:
  type: NodePort
  ports:
    - name: http
      port: 80
      nodePort: 32000
  selector:
    app: hello-world
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: hello-world-hpa
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: hello-world
    spec:
      containers:
      - name: hello-world
        image: tutum/apache-php:latest
        ports:
        - containerPort: 80
        resources:
          requests:
            memory: "16Mi"
            cpu: "50m"
          limits:
            memory: "32Mi"
            cpu: "100m"
---
apiVersion: extensions/v1beta1
kind: HorizontalPodAutoscaler
metadata:
  name: hello-world-hpa
  namespace: default
spec:
  scaleRef:
    kind: Deployment
    name: hello-world-hpa
    subresource: scale
  minReplicas: 2
  maxReplicas: 10
  cpuUtilization:
    targetPercentage: 10