使用Docker链接时拒绝与RabbitMQ的连接 [英] Refused connection to RabbitMQ when using docker link

问题描述

我有一个微服务应用程序，它有两个服务，还有一个兔子mq用作它们之间进行通信的消息队列.现在，我想将它们部署在docker上.我在docker-compose.yml文件中有以下代码:

I have a microservices application which has two services and a rabbit mq used as a message queue for communication between them. Now, I want to deploy them on docker. I have the following code in the docker-compose.yml file:

版本:"3" 服务:

  rabbitmq:
    build: ./Rabbit
    hostname: "rabbitmq"
    container_name: "rabbitmq"
    environment:
      RABBITMQ_ERLANG_COOKIE: "cookie"
      RABBITMQ_DEFAULT_USER: "user"
      RABBITMQ_DEFAULT_PASS: "pass"
      RABBITMQ_DEFAULT_VHOST: "/"
    ports:
      - "15672:15672"
      - "5672:5672"
    # labels:
    #   NAME: "rabbit1"
    volumes:
    - "/opt/rabbitmq:/var/lib/rabbitmq"

  service1:
    build: ./service1
    deploy:
      replicas: 5
      restart_policy:
        condition: on-failure
      resources:
        limits:
          cpus: "0.1"
          memory: 50M
    ports:
      - "8181:80"
    depends_on:
      - rabbitmq
    links:
     - rabbitmq
    networks:
      - webnet

因此，这里我在容器中构建RabbitMQ映像，然后将此容器链接到service1的容器.由于service1是ASP.NET Core Web API，因此我使用以下设置连接到消息队列:

So, here I build the RabbitMQ image in a container and then link this container to the container of service1. Since service1 one is an ASP.NET Core Web API, I use the following setup to connect to the message queue:

//Establish the connection
            var factory = new ConnectionFactory
            {
                HostName = "rabbitmq",
                Port = 5672,
                UserName = "user",
                Password = "pass",
                VirtualHost = "/",
                AutomaticRecoveryEnabled = true,
                NetworkRecoveryInterval = TimeSpan.FromSeconds(15)
            };

但是当我尝试运行docker-compose up时，收到以下错误消息:

But when I try to run docker-compose up, I receive the following error message:

未处理的异常: RabbitMQ.Client.Exceptions.BrokerUnreachableException:无 指定的端点可以访问---> RabbitMQ.Client.Exceptions.ConnectFailureException:连接失败 ---> System.Net.Internals.SocketExceptionFactory + ExtendedSocketException: 没有这样的设备或地址

Unhandled Exception: RabbitMQ.Client.Exceptions.BrokerUnreachableException: None of the specified endpoints were reachable ---> RabbitMQ.Client.Exceptions.ConnectFailureException: Connection failed ---> System.Net.Internals.SocketExceptionFactory+ExtendedSocketException: No such device or address

也许我在HostName中有一个错误，但是我不确定如何纠正它.

Maybe I have a mistake in the HostName but I am not sure how to correct it.

推荐答案

有两个问题需要解决:

1. 这两个服务不属于同一网络，因此您需要将rabbitmq服务添加到webnet网络或为这两个服务创建新的网络

1. the two services do not belong to the same network so you need to add the rabbitmq service to the webnet network or create a new network for the two services

rabbitmq可能需要一些时间才能完全可用(即监听5672端口)，因此您需要使service1服务等待rabbitmq服务；有关此问题，请参见此问题.

rabbitmq may take some time to become fully available (i.e. to listen to the 5672 port) so you need to make the service1 service to wait for the rabbitmq service; see this question about this issue.

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