apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: hello
spec:
  replicas: 3
  selector:
    matchLabels:
      app: hello
  template:
    metadata:
      name: hello
      labels:
        app: hello
    spec:
      containers:
        - name: nginx
          image: nginxdemos/hello:plain-text
          ports:
            - name: http
              containerPort: 80
              protocol: TCP
