kubernetes-handbook/manifests/test/rolling-update-test/rolling-update-test.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: rolling-update-test
spec:
  replicas: 3
  template:
    metadata:
      labels:
        app: rolling-update-test
    spec:
      containers:
      - name: rolling-update-test
        image: harbor-001.jimmysong.io/library/hello:v1
        ports:
        - containerPort: 9090
---
apiVersion: v1
kind: Service
metadata:
  name: rolling-update-test
  labels:
    app: rolling-update-test
spec:
  ports:
  - port: 9090
    protocol: TCP
    name: http
  selector:
    app: rolling-update-test