2.4Canary with Argo Rollouts (Kubernetes-Native)

For teams not using Spinnaker, Argo Rollouts provides Kubernetes-native canary deployments:

# argo-canary-rollout.yaml
apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: checkout-service
spec:
  replicas: 10
  strategy:
    canary:
      canaryService: checkout-canary
      stableService: checkout-stable
      trafficRouting:
        istio:
          virtualService:
            name: checkout-vsvc
            routes:
              - primary
      steps:
        - setWeight: 5       # 5% to canary
        - pause: { duration: 5m }
        - analysis:
            templates:
              - templateName: canary-analysis
            args:
              - name: service-name
                value: checkout-service
        - setWeight: 25      # 25% to canary
        - pause: { duration: 10m }
        - analysis:
            templates:
              - templateName: canary-analysis
        - setWeight: 50      # 50% to canary
        - pause: { duration: 10m }
        - analysis:
            templates:
              - templateName: canary-analysis
        - setWeight: 100     # promote canary to stable

---
apiVersion: argoproj.io/v1alpha1
kind: AnalysisTemplate
metadata:
  name: canary-analysis
spec:
  metrics:
    - name: error-rate
      interval: 1m
      successCondition: result < 0.01
      provider:
        prometheus:
          address: http://prometheus.monitoring:9090
          query: |
            sum(rate(http_requests_total{status=~"5..",app="checkout",
              rollouts-pod-template-hash="{{args.canary-hash}}"}[5m]))
            /
            sum(rate(http_requests_total{app="checkout",
              rollouts-pod-template-hash="{{args.canary-hash}}"}[5m]))
    - name: latency-p99
      interval: 1m
      successCondition: result < 0.5
      provider:
        prometheus:
          address: http://prometheus.monitoring:9090
          query: |
            histogram_quantile(0.99, sum(rate(
              http_request_duration_seconds_bucket{app="checkout",
                rollouts-pod-template-hash="{{args.canary-hash}}"}[5m])) by (le))