apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-hpa-test
  labels:
    app: nginx
spec:

  # 如果一开始就要对deployment设计hpa对象，则不要设置replicas（默认1），而是由hpa对象来动态控制

  # -- 若显式设置replica为0，则会禁用绑定的hpa策略。直到你修改为大于0的值

  # replicas:  2

  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
        - name: nginx-container
          image: nginx
          ports:
            - containerPort: 80
          resources:
            requests:
              cpu: 50m

              memory: 128Mi
---

apiVersion: v1
kind: Service
metadata:
  name: nginx-hpa-test
  labels:
    app: nginx
spec:
  ports:
    - port: 80
  selector:
    app: nginx