Argo Rollout Spec for Vote App with Blue Green Strategy

vote-ro.yaml

apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: vote
  labels:
    role: vote
spec:
  replicas: 4
  minReadySeconds: 20
  strategy:
    blueGreen:
      autoPromotionEnabled: true
      autoPromotionSeconds: 30
      activeService: vote
      previewService: vote-bg
  selector:
    matchLabels:
      app: python
      role: vote
    matchExpressions:
      - key: version
        operator: Exists
  template:
    metadata:
      labels:
        app: python
        role: vote
        version: v5
    spec:
      containers:
        - name: app
          image: schoolofdevops/vote:v5
          envFrom:
            - configMapRef:
                name: vote
          resources:
            requests:
              memory: "64Mi"
              cpu: "50m"
            limits:
              memory: "128Mi"
              cpu: "250m"