带有容器名称的Docker-Compose容器IP地址 [英] Docker-Compose container ip address with container name

问题描述

我的docker-compose有两个服务，
和docker-compose.yml用容器名称定义环境变量ip地址

My docker-compose have a two service, and docker-compose.yml define enviroment variable ip address with container name,

 version: '2'

services:
  api:
    build: ./api/
    command: python3 manage.py runserver
    volumes:
      - ./api:/code
    ports:
      - "8000:80"
    networks:
      - dock_net
    container_name: con_api

  web:
    build: ./web/
    command: python3 manage.py runserver
    volumes:
      - ./web:/code
    ports:
      - "8001:80"
    networks:
      - dock_net
    container_name: con_web
    environment:
        Ip:con_ip

networks:
  dock_net:
      driver: bridge

但变量请参见 con_ip不是127.0.0.3

But variable see "con_ip" not 127.0.0.3

推荐答案

我认为您没有正确使用环境变量。请参考撰写环境变量

I don't think that you are properly using environment variables. Please refer environment variables in compose.

您可以简单地通过使用另一个容器的服务名称来访问另一个容器。这是推荐的方法。

You can access one container from other container simply by using service name of that container. And this is the recommended way.

但是如果您出于自己的原因而喜欢IP地址，我会告诉您如何设置容器的静态IP地址，我不会

But if you prefer IP addresses for your own reasons, I am telling you how to set the static ip address of container, i would not recommend it though.

version: '2'
services:
  api:
    build: ./api/
    command: python3 manage.py runserver
    volumes:
      - ./api:/code
    ports:
      - "8000:80"
    networks:
      - dock_net:
          ipv4_address: 127.0.0.3
    container_name: con_api

  web:
    build: ./web/
    command: python3 manage.py runserver
    volumes:
      - ./web:/code
    ports:
      - "8001:80"
    networks:
      - dock_net:
          ipv4_address: 127.0.0.4
    container_name: con_web

networks:
  dock_net:
    driver: bridge
    ipam:
     config:
       - subnet: 127.0.0.0/8
         gateway: 127.0.0.1

这将为您的容器分配所需的IP地址。 API 将位于 127.0.0.3 ，而 web 在 127.0.0.4

This will assign the required IP-addresses to your containers. API will be at 127.0.0.3 and web will be at 127.0.0.4

编辑：中：如果要访问名为 api 从Web容器中访问，然后您就可以使用我们在此处分配的IP地址了。 http://127.0.0.3:80/ 或您也可以使用 http：// api：80 /

If you want to access service named api from inside the web container then you can use its ip address as we have allocated here. http://127.0.0.3:80/ or you can also use http://api:80/

api 用于代替IP地址，因为它是服务名称，如果未指定主机名，则将服务名称作为默认主机名。如果您想了解主机名，请参考此问题。

The api is used in place of IP address because its the service name and when no hostname is given, service name is taken as default hostname. If you want to know about hostnames refer to this question.

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