docker - RabbitMQ 客户端在运行 docker-compose up 命令时抛出错误

Question

我正在尝试使用两个依赖于rabbitMQ的.net core控制台应用程序运行docker-compose，我在Windows上使用Docker。

我已添加到控制台应用程序，如 RabbitMQ 官方文档 https://www.rabbitmq.com/tutorials/tutorial-one-dotnet.html 中所述。

在这两个应用程序之外，我添加了 docker-compose.yml

文件夹结构:

1.发送

1. Send.cs(如 RabbitMQ 文档中所示)
2. 发送.csproj

3. Dockerfile

   FROM mcr.microsoft.com/dotnet/core/sdk:2.2 as build-env
   WORKDIR /app
   
   # Copy the project file and restore the dependencies
   COPY *.csproj ./
   RUN dotnet restore
   
   # Copy the remaining source files and build the application
   COPY . ./
   RUN dotnet publish -c Release -o out
   
   # Build the runtime image
   FROM mcr.microsoft.com/dotnet/core/sdk:2.2
   WORKDIR /app
   COPY --from=build-env /app/out .
   ENTRYPOINT ["dotnet", "Send.dll"]
   

2.接收

1. Recieve.cs(如 RabbitMQ 文档中所示)

2. 接收.csproj

3. Dockerfile(与 Sender Dockerfile 相同，只是 Send 替换为 Recieve)

3。 Docker-compose.yml

  version: '3'

    services:
      rabbitmq:
        image: rabbitmq:3-management
        ports:
          - "5672:5672"
          - "15672:15672"
        container_name: rabbitmq
        hostname: my-rabbit
      Send:
        image: sender
        build:
          context: ./Send
          dockerfile: Dockerfile
        depends_on:
            - rabbitmq
      Reciever:
        image: reciever
        build:
          context: ./Recieve
          dockerfile: Dockerfile
        depends_on:
            - rabbitmq

抛出错误

Unhandled Exception: RabbitMQ.Client.Exceptions.BrokerUnreachableException: None of the specified endpoints were reachable ---> System.AggregateException: One or more errors occurred. (Connection failed) ---> RabbitMQ.Client.Exceptions.ConnectFailureException: Connection failed ---> System.Net.Internals.SocketExceptionFactory+ExtendedSocketException: Connection refused 127.0.0.1:5672

Answer 1

为了使Docker容器能够相互通信，需要将它们设置在同一网络中。在您的 docker-compose.yml 中添加以下内容:

version: '3'
    services:
      rabbitmq:
        image: rabbitmq:3-management
        ports:
          - "5672:5672"
          - "15672:15672"
        container_name: rabbitmq
        hostname: my-rabbit
        networks:
          - my-network-name
      Send:
        image: sender
        build:
          context: ./Send
          dockerfile: Dockerfile
        depends_on:
            - rabbitmq
        networks:
          - my-network-name
      Reciever:
        image: reciever
        build:
          context: ./Recieve
          dockerfile: Dockerfile
        depends_on:
            - rabbitmq
        networks:
          - my-network-name
networks:
  my-network-name:
    driver: bridge

正如你所看到的，所有容器都在同一个网络中，它们可以通过以下方式进行通信:

http://<container_name>:<port>

因此，如果您希望发送者向RabbitMQ发送消息，则:

amqp://rabbitmq:5672

如果您使用localhost作为任何容器内的IP，它将使用其环回接口(interface)，自行接收请求。