podAntiAffinity-preferredDuringSchedulingIgnoredDuringExecution.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis-cache
spec:
  selector:
    matchLabels:
      app: store
  replicas: 3
  template:
    metadata:
      labels:
        app: store
    spec:
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - podAffinityTerm:
              labelSelector:
                matchExpressions:
                - key: app
                  operator: In
                  values:
                  - store
              namespaces:
              - default
              topologyKey: failure-domain.beta.kubernetes.io/zone
            weight: 100
      containers:
      - name: redis-server
        image: redis:3.2-alpine