apiVersion: apps/v1 #  for k8s versions before 1.9.0 use apps/v1beta2  and before 1.8.0 use extensions/v1beta1
kind: Deployment
metadata:
  name: redis-leader
spec:
  selector:
    matchLabels:
      app: redis
      role: leader
      tier: backend
  replicas: 1
  template:
    metadata:
      labels:
        app: redis
        role: leader
        tier: backend
    spec:
      containers:
      - name: leader
        image: registry.k8s.io/redis@sha256:cb111d1bd870a6a471385a4a69ad17469d326e9dd91e0e455350cacf36e1b3ee  # or just image: redis
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        ports:
        - containerPort: 6379