在docker-compose中的不同docker服务之间进行通信 [英] Communicating between different docker services in docker-compose

问题描述

我刚刚开始使用docker-compose，目前正在努力处理不同服务之间的通信。

I just started working with docker-compose and am currently struggling with communication between the different services.

我有2个服务， alice 和 bob 。我希望它们能够相互发送http请求。据我了解，服务应该能够通过使用服务名作为主机名来相互访问。

I have 2 services, alice and bob. I want these to be able to send http requests to each other. As far as I understood, services should be able to reach each other by using the servicename as hostname.

不幸的是， alice 在我的示例中无法通过 http：// bob到达 bob ：5557 ，而 bob 无法通过 http：// alice：5556 。

Unfortunately, alice in my example is not able to reach bob on http://bob:5557, and bob is not able to reach alice on http://alice:5556.

我无法正确理解什么？

What am I not understanding correctly? Is it even possible to make http requests between services?

这是我的 docker-compose.yml 文件：

version: '3'
services:
  alice:
    build: blockchain
    ports:
    - "5556:5000"
    environment:
      NAME: Alice
  bob:
    build: blockchain
    ports:
    - "5557:5000"
    environment: 
      NAME: Bob

推荐答案

联网撰写中清楚地记录

使用CONTAINER_PORT进行联网的服务到服务通信

Networked service-to-service communication use the CONTAINER_PORT

因此，您应该使用容器端口在容器之间进行通信。
http：// bob：5000 和 http：// alice：5000 。

Thus you should use the container ports to communicate between the containers. http://bob:5000 and http://alice:5000 .

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