rollout.yaml

apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: my-backend-rollout
  namespace: staging # 1. FIX: Explicit Namespace
spec:
  replicas: 6
  selector:
    matchLabels:
      app: backend # 2. FIX: Selector key
  template:
    metadata:
      labels:
        app: backend # 3. FIX: Matching Template Label
    spec:
      # 👇 4. FIX: Containers specification (Required Value)
      containers: 
      - name: node-backend-container
        image: docker.io/yvmr/np:latest # Ensure this image exists
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 3000
        
  # 5. FIX: Correctly nested strategy
  strategy:
    canary:
      stableService: my-backend-stable # <-- Service that points to stable pods
      canaryService: my-backend-canary # <-- Service that points to canary pods
      
      trafficRouting:
        istio:
          virtualService:
            name: my-backend-vs
            routes:
              - primary

      steps:
      - setWeight: 10
      - pause: {}
      - setWeight: 50
      - pause: {}
      - setWeight: 100