---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: sample-canary
  namespace: sample
  labels:
    app: sample-canary
spec:
  replicas: 1
  selector:
    matchLabels:
      app: sample-canary
  template:
    metadata:
      labels:
        app: sample-canary
    spec:
      containers:
        - name: canary-backend
          image: public.ecr.aws/nginx/nginx:1.27-alpine
          ports:
            - containerPort: 80
          volumeMounts:
            - name: canary-config
              mountPath: /etc/nginx/conf.d
      volumes:
        - name: canary-config
          configMap:
            name: canary-backend-config
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: canary-backend-config
  namespace: sample
data:
  default.conf: |
    server {
      listen 80;
      server_name _;
      location / {
        add_header X-Backend canary;
        return 200 'canary-response';
        add_header Content-Type text/plain;
      }
    }
---
apiVersion: v1
kind: Service
metadata:
  name: sample-canary
  namespace: sample
spec:
  selector:
    app: sample-canary
  ports:
    - port: 80
      targetPort: 80
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: sample-canary
  namespace: sample
  annotations:
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-weight: "20"
spec:
  ingressClassName: nginx
  rules:
    - host: sample.test.local
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: sample-canary
                port:
                  number: 80