ingress/single-cluster/ingress-custom-grpc-health-check/grpc-hc-proxy.yaml

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: foo-external
  annotations:
    kubernetes.io/ingress.class: "gce"
spec:
  rules:
  - host: foo.example.com
    http:
      paths:
      - backend:
          serviceName: foo
          servicePort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: foo
  annotations:
    cloud.google.com/backend-config: '{"ports": {"8080":"hc-backendconfig"}}'
spec:
  ports:
  - port: 8080
    targetPort: 8080
    name: http
  selector:
    app: foo
  type: NodePort
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: foo
spec:
  replicas: 3
  selector:
    matchLabels:
      app: foo
  template:
    metadata:
      labels:
        app: foo
    spec:
      containers:
      - name: hc-proxy
        image: docker.io/salrashid123/grpc_health_proxy:1.0.0
        args: [
          "--http-listen-addr=localhost:8081",
          "--grpc-addr=localhost:8080",
          "--service-name=echo.EchoServer",
        ]
        ports:
        - containerPort: 8081
     - name: grpc-app
       image: gcr.io/mygcr/myapp
       ports:
       - containerPort: 8080:
---
apiVersion: cloud.google.com/v1
kind: BackendConfig
metadata:
  name: hc-backend-config
spec:
  healthCheck:
    port: 8081
    protocol: "HTTP"