多个码头工程项目之间的沟通 [英] Communication between multiple docker-compose projects

问题描述

我在两个不同的文件夹中有两个单独的 docker-compose.yml 文件：

I have two separate docker-compose.yml files in two different folders:

• 〜/ front / docker-compose.yml


• 〜/ api / docker-compose.yml

如何确保 front 中的容器可以将请求发送到 api 中的容器？

How can I make sure that a container in front can send requests to a container in api?

我知道 - default-gateway 选项可以使用 docker run ，以便可以将特定的IP地址分配给此容器，但使用 docker-compose 。

I know that --default-gateway option can be set using docker run for an individual container, so that a specific IP address can be assigned to this container, but it seems that this option is not available when using docker-compose.

目前，我最终做了一个 docker检查my_api_container_id 并查看输出中的网关。它的工作原理，但问题是这个IP被随机归因，所以我不能依赖它。

Currently I end up doing a docker inspect my_api_container_id and look at the gateway in the output. It works but the problem is that this IP is randomly attributed, so I can't rely on it.

此问题的另一种形式可能是：

Another form of this question might thus be:

• 我可以使用docker-compose将固定的IP地址归因于特定容器吗？

但是最终我正在寻找的是：

But in the end what I'm looking after is:

• 两个不同的docker组合项目如何沟通

推荐答案

你只需要确保你想要的容器彼此在同一个网络上。网络是一流的码头构造，不是特定的。

You just need to make sure that the containers you want to talk to each other are on the same network. Networks are a first-class docker construct, and not specific to compose.

# front/docker-compose.yml
version: '2'
services:
  front:
    ...
    networks:
      - some-net
networks:
  some-net:
    driver: bridge

...

# api/docker-compose.yml
version: '2'
services:
  api:
    ...
    networks:
      - front_some-net
networks:
  front_some-net:
    external: true

然后他们可以使用服务名称彼此交谈。从前面可以执行 ping api ，反之亦然。

They can then talk to each other using the service name. From front you can do ping api and vice versa.

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