路由指向 gRPC 服务

前置准备

  1. Higress 安装在 K8s 内的 higress-system 命名空间下，监听的 HTTP 端口为 80。 为了测试方便，gateway 端口映射都本地 127.0.0.1:80;
  2. 目标是为 default 命名空间下的 部署 grpc-httpbin 服务，服务监听的端口为 9091；
  3. grpc-httpbin 服务具体内容请参考 github httpbin;
  4. grpcurl 工具请参考 github grpcurl;

准备后端 grpc-httpbin 服务

  1. apiVersion: v1
  2. kind: Service
  3. metadata:
  4.   name: grpc-httpbin-v1
  5.   namespace: default
  6. spec:
  7.   selector:
  8.     app: grpc-httpbin-v1
  9.   ports:
  10.     - protocol: TCP
  11.       port: 9091
  12.       targetPort: 9091
  13. —-
  14. apiVersion: apps/v1
  15. kind: Deployment
  16. metadata:
  17.   name: grpc-httpbin-v1
  18.   namespace: default
  19.   labels:
  20.     app: grpc-httpbin-v1
  21. spec:
  22.   replicas: 1
  23.   selector:
  24.     matchLabels:
  25.       app: grpc-httpbin-v1
  26.   template:
  27.     metadata:
  28.       labels:
  29.         app: grpc-httpbin-v1
  30.     spec:
  31.       containers:
  32.       - name: grpc-httpbin-v1
  33.         image: registry.cn-hangzhou.aliyuncs.com/2456868764/httpbin:v1.0.1
  34.         env:
  35.         - name: POD_NAME
  36.           valueFrom:
  37.             fieldRef:
  38.               fieldPath: metadata.name
  39.         - name: NAMESPACE
  40.           valueFrom:
  41.             fieldRef:
  42.               fieldPath: metadata.namespace
  43.         resources:
  44.           requests:
  45.             cpu: 10m

配置路由

  1. apiVersion: networking.k8s.io/v1
  2. kind: Ingress
  3. metadata:
  4.   annotations:
  5.     nginx.ingress.kubernetes.io/backend-protocol: “GRPC”
  6.   name: ingress-grpc-httpbin
  7.   namespace: default
  8. spec:
  9.   ingressClassName: higress
  10.   rules:
  11.     - host: foo.com
  12.       http:
  13.         paths:
  14.           - path: /
  15.             pathType: Prefix
  16.             backend:
  17.               service:
  18.                 name: grpc-httpbin-v1
  19.                 port:
  20.                   number: 9091

nginx.ingress.kubernetes.io/backend-protocol Ingress Annotaion 配置指定后端服务使用的协议，默认为HTTP，支持HTTP、HTTP2、HTTPS、GRPC和GRPCS。

grpcurl 调用测试

  1. 列出后端服务列表
  1. grpcurl -plaintext -authority foo.com  127.0.0.1:80  list
  4. grpc.reflection.v1.ServerReflection
  5. grpc.reflection.v1alpha.ServerReflection
  6. order.OrderManagement
  1. 调用 sayHello 方法
  1. grpcurl -plaintext -authority foo.com -d ‘{“name”: “jun”}’ 127.0.0.1:80  order.OrderManagement/sayHello
  4. “Hello jun”