for testing

public-web-svc.yaml

apiVersion: v1
kind: Service
metadata:
  creationTimestamp: 2018-09-05T05:46:14Z
  labels:
    app: web
  name: public-web-svc
  namespace: default
  resourceVersion: "14972"
  selfLink: /api/v1/namespaces/default/services/public-web-svc
  uid: 000fa04f-b0cf-11e8-8484-021d76b33cfe
spec:
  clusterIP: 10.101.120.176
  externalIPs:
  - 10.16.1.20
  externalTrafficPolicy: Cluster
  ports:
  - nodePort: 30928
    port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: web
  sessionAffinity: None
  type: LoadBalancer
status:
  loadBalancer: {}

web-dc.yaml

apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
  name: web-dc
spec:
  selector:
    matchLabels:
      app: web
  replicas: 2 # tells deployment to run 2 pods matching the template
  template:
    metadata:
      labels:
        app: web
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80

web-hpa.yaml

apiVersion: autoscaling/v2beta2
kind: HorizontalPodAutoscaler
metadata:
  name: web-hpa
  namespace: default
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: web-dc
  minReplicas: 1
  maxReplicas: 10
  metrics:
  - type: Resource
    resource:
      name: cpu
      target:
        type: Utilization
        averageUtilization: 5

web-svc.yaml

kind: Service
apiVersion: v1
metadata:
  name: web-svc
spec:
  selector:
    app: web
  ports:
  - protocol: TCP
    port: 8080
    targetPort: 80