从另一个容器连接到mysql容器

问题描述：

我正试图从撰写文件指定的同一网络上的另一个容器中连接到mysql容器.

I'm trying to connect to a mysql container from within another container on the same network specified by a compose file.

version: "2"
services:
  web:
    build:
      context: .
      dockerfile: nginx/Dockerfile
    ports:
      - "8080:80"
    volumes:
      - ./data:/srv
  php:
    build:
      context: .
      dockerfile: php-fpm/Dockerfile
    volumes:
      - ./data:/srv
  mysql:
    image: mysql
    environment:
      - MYSQL_ALLOW_EMPTY_PASSWORD=yes
      - MYSQL_USER=dummy_user
      - MYSQL_PASSWORD=12345

我不确定我要从php容器连接到mysql容器时，连接参数是什么.

I'm not really sure what the connection parameters would be if I'm trying to connect to the mysql container from the php container.

具体来说，来自位于同一docker-compose网络中的另一个容器的mysql容器的主机和端口是什么?

Specifically, what are the host and port for the mysql container from within another container of the same docker-compose network?

我尝试使用主机:mysql端口:3306，但这似乎不起作用.

I've tried host: mysql port: 3306, but that doesn't seem to work.

答

您应该链接容器.将 ports 部分添加到 mysql 容器中，并将 links 部分添加到 php 容器中.

You should link the containers. Add ports section to mysql container and links section to php container.

version: "2"
services:
  web:
    build:
      context: .
      dockerfile: nginx/Dockerfile
    ports:
      - "8080:80"
    volumes:
      - ./data:/srv
  php:
    build:
      context: .
      dockerfile: php-fpm/Dockerfile
    links:
      - mysql:mysql
    volumes:
      - ./data:/srv
  mysql:
    image: mysql
    ports:
      - "3306:3306"
    environment:
      - MYSQL_ALLOW_EMPTY_PASSWORD=yes
      - MYSQL_USER=dummy_user
      - MYSQL_PASSWORD=12345

使用该配置，您将可以使用 mysql:3306

With that configuration you'll be able to access mysql container from php with mysql:3306

一些文档: https://docs.docker.com/compose/联网/#updating-containers

从另一个容器连接到mysql容器

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