apiVersion: flagger.app/v1beta1
kind: Canary
metadata:
  name: podinfo-canary
  namespace: podinfo
spec:
  # service mesh provider can be: kubernetes, istio, appmesh, nginx, gloo
  provider: nginx
  service:
    port: 80
    targetPort: 9898
  # deployment reference
  targetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: podinfo
  #Ingress reference
  ingressRef:
    apiVersion: networking.k8s.io/v1
    kind: Ingress
    name: podinfo
  # HPA reference (optional)
  autoscalerRef:
    apiVersion: autoscaling/v2beta2
    kind: HorizontalPodAutoscaler
    name: podinfo
  # the maximum time in seconds for the canary deployment
  # to make progress before rollback (default 600s)
  progressDeadlineSeconds: 60
  analysis:
    # schedule interval (default 60s)
    interval: 10s
    # max number of failed metric checks before rollback
    threshold: 10
    # max traffic percentage routed to canary
    # percentage (0-100)
    maxWeight: 50
    # canary increment step
    # percentage (0-100)
    stepWeight: 10
    # NGINX Prometheus checks
    metrics:
    - name: error-rate
      templateRef:
        name: error-rate
        namespace: podinfo
      thresholdRange:
        max: 1
      interval: 1m
    webhooks:
      - name: acceptance-test
        type: pre-rollout
        url: http://flagger-loadtester.flagger-system/
        timeout: 30s
        metadata:
          type: bash
          cmd: "curl -sd 'test' http://podinfo-canary.podinfo/token | grep token"
      - name: load-test
        url: http://flagger-loadtester.flagger-system/
        timeout: 5s
        metadata:
          cmd: "hey -z 1m -q 10 -c 2 -host podinfo.test http://k8s-xxx.elb.us-west-2.amazonaws.com"
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: podinfo-canary
  namespace: podinfo
  labels:
    release: kube-prometheus-stack
spec:
  endpoints:
  - path: /metrics
    port: http
    interval: 5s
  selector:
    matchLabels:
      app.kubernetes.io/name: podinfo-canary
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: podinfo-primary
  namespace: podinfo
  labels:
    release: kube-prometheus-stack
spec:
  endpoints:
    - path: /metrics
      port: http
      interval: 5s
  selector:
    matchLabels:
      app.kubernetes.io/name: podinfo-primary
---
apiVersion: flagger.app/v1beta1
kind: MetricTemplate
metadata:
  name: error-rate
  namespace: podinfo
spec:
  provider:
    type: prometheus
    address: http://kube-prometheus-stack-prometheus.monitoring:9090
  query: |
    100 - sum(
      rate(
        nginx_ingress_controller_requests{
          exported_namespace="{{ namespace }}",
          ingress="{{ ingress }}",
          status!~"5.*"
        }[{{ interval }}]
      )
    ) 
    / 
    sum(
      rate(
        nginx_ingress_controller_requests{
          exported_namespace="{{ namespace }}",
          ingress="{{ ingress }}"
        }[{{ interval }}]
      )
    ) 
    * 100