使用 Nacos 作为注册中心

1. 准备工作

  • dubbo-go cli 工具和依赖工具已安装
  • 创建一个新的 demo 应用
  • 启动一个 Nacos 实例,暴露 8848 端口

2. 配置注册中心


title: Use Nacos as a registry type: docs weight: 10

1. Preparations

  • dubbo-go cli tools and dependent tools have been installed
  • Create a new demo application
  • Start a Nacos instance and expose port 8848

2. Configure the registration center

Modify the server configuration go-server/conf/dubbogo.yaml

dubbo:
  registries:
    nacos: # configure Nacos registration center
      protocol: nacos
      address: 127.0.0.1:8848 # Specify Nacos address
  protocols:
    triple:
      name: tri
      port: 20000
  provider:
    services:
      GreeterProvider:
        interface: "" # read from pb

Modify client configuration go-client/conf/dubbogo.yaml

dubbo:
  registries:
    nacos:
      protocol: nacos
      address: 127.0.0.1:8848
  consumer:
    references:
      GreeterClientImpl:
        protocol: tri
        interface: "" # read from pb

3. Use Nacos for service discovery

  • Start go-server/cmd and check the log

    [Nacos Registry] Registry instance with param ...
    

    The log contains Nacos registration information, and the current service interface is registered in Nacos.

    You can log in to the console http://localhost:8848/nacos to view the registered services

  • Start go-client/cmd to view logs

     [Nacos Registry] Update begin, service event: ServiceEvent{Action{add}, Path{tri://xxx.xxx.xxx.xxx:20000/api.Greeter ...
    

    The log contains the subscription event information of the Nacos registration component, and the server IP and port number are obtained, indicating that the call is successful.

    client response result: name: "Hello laurence" id: "12345" age:21
    

4. More supported registries

Reference dubbo-go-samples/registry 修改服务端配置 go-server/conf/dubbogo.yaml

dubbo:
  registries:
    nacos: # 配置 Nacos 注册中心
      protocol: nacos
      address: 127.0.0.1:8848 # 指定 Nacos 地址
  protocols:
    triple:
      name: tri
      port: 20000
  provider:
    services:
      GreeterProvider:
        interface: "" # read from pb

修改客户端配置 go-client/conf/dubbogo.yaml

dubbo:
  registries:
    nacos:
      protocol: nacos
      address: 127.0.0.1:8848
  consumer:
    references:
      GreeterClientImpl:
        protocol: tri
        interface: "" # read from pb

3. 使用 Nacos 进行服务发现

  • 启动go-server/cmd,查看日志

    [Nacos Registry] Registry instance with param ...
    

    日志中包含 Nacos 注册信息,将当前服务接口注册在 Nacos。

    可登陆控制台 http://localhost:8848/nacos 查看注册的服务

  • 启动 go-client/cmd 查看日志

     [Nacos Registry] Update begin, service event: ServiceEvent{Action{add}, Path{tri://xxx.xxx.xxx.xxx:20000/api.Greeter ...
    

    日志中包含 Nacos 注册组件的订阅事件信息,获取到服务端 IP 和端口号,显示调用成功。

    client response result: name:"Hello laurence" id:"12345" age:21
    

4. 更多支持的注册中心

参考 dubbo-go-samples/registry


Last modified January 2, 2023: Enhance Dubbogo docs (#1800) (71c8e7227)