Rolling Update

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: minikube-sample
spec:
  replicas: 3
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 0
      maxSurge: 1
  template:
    metadata:
      labels:
        app: minikube-sample
    spec:
      containers:
        - name: minikube-sample
          image: 'gcr.io/meta-iterator-236009/spring-boot-example:v2'
          ports:
            - containerPort: 8080
          readinessProbe:
            httpGet: 
              path: /home/data
              port: 8080
            initialDelaySeconds: 5
            periodSeconds: 5


---
apiVersion: v1
kind: Service
metadata:
  name: minikube-sample
  labels:
    name: minikube-sample
spec:
  ports:
    - port: 8080
      targetPort: 8080
      protocol: TCP
  selector:
    app: minikube-sample
  type: LoadBalancer