first.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: af-deployment
  labels:
    app: nginx
spec:
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: app
                    operator: In
                    values:
                    - nginx
              topologyKey: failure-domain.beta.kubernetes.io/zone
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80