apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  strategy: 
    rollingUpdate:
      maxSurge: 5%      # max превышение количества реплик
      maxUnavailable: 1 # max недостаток количества реплик
    type: rollingUpdate
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80