apiVersion: apps/v1
kind: Deployment
metadata:
  name: numbers-api
  labels:
    kiamol: ch19
    app: numbers
spec:
  selector:
    matchLabels:
      app: numbers
      component: api
  template:
    metadata:
      labels:
        app: numbers
        component: api
    spec:
      containers:
        - name: api
          image: kiamol/ch03-numbers-api
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: app
                operator: In
                values:
                - numbers
              - key: component
                operator: In
                values:
                - api
            topologyKey: "kubernetes.io/hostname"