go - 使用入口部署 Rest + gRPC 服务器部署到 k8s

Question

我使用了示例 gRPC HelloWorld 应用程序 https://github.com/grpc/grpc-go/tree/master/examples/helloworld .本示例在本地系统运行流畅。

我想使用 Ingress 将它部署到 kubernetes。

下面是我的配置文件。

service.yaml - 作为 NodePort

apiVersion: v1
kind: Service
metadata:
  name: grpc-scratch
  labels:
    run: grpc-scratch
  annotations:
    service.alpha.kubernetes.io/app-protocols: '{"grpc":"HTTP2"}'
spec:
  type: NodePort
  ports:
  - name: grpc
    port: 50051
    protocol: TCP
    targetPort: 50051
  selector:
    run: example-grpc

ingress.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: grpc-ingress
  annotations:
    nginx.org/grpc-services: "grpc"
    kubernetes.io/ingress.class: "nginx"
    kubernetes.io/tls-acme: true
spec:
  tls:
    - hosts:
        - xyz.com
      secretName: grpc-secret
  rules:
    - host: xyz.com
      http:
        paths:
          - path: /grpc
            backend:
              serviceName: grpc
              servicePort: 50051

我无法使用 url xyz.com/grpc 向服务器发出 gRPC 请求。获取错误

{
  "error": "14 UNAVAILABLE: Name resolution failure"
}

如果我向 xyz.com 发出请求，错误是

{
  "error": "14 UNAVAILABLE: Trying to connect an http1.x server"
}

如有任何帮助，我们将不胜感激。

Answer 1

入口对象的后端是服务和端口名称的组合

在你的情况下，你有 serviceName: grpc 作为后端，而你的服务的实际名称是 name: grpc-scratch

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: grpc-ingress
  annotations:
    nginx.org/grpc-services: "grpc"
    kubernetes.io/ingress.class: "nginx"
    kubernetes.io/tls-acme: true
spec:
  tls:
    - hosts:
        - xyz.com
      secretName: grpc-secret
  rules:
    - host: xyz.com
      http:
        paths:
          - path: /grpc
            backend:
              serviceName: grpc-scratch
              servicePort: grpc