将Django与Docker一起使用时出错 - "无法在' 127.0.0.1'上连接到MySQL服务器(111)")

时间:2017-06-13 04:41:24

标签: python mysql django database docker

我正在尝试将Docker与Django一起使用但我收到错误 - db_1 | error: database is uninitialized and password option is not specified db_1 | You need to specify one of MYSQL_ROOT_PASSWORD, MYSQL_ALLOW_EMPTY_PASSWORD and MYSQL_RANDOM_ROOT_PASSWORD django.db.utils.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1' (111)")。当我使用没有Docker的应用程序时,它可以工作。有什么建议吗?

我的Dockerfile:

FROM python:3
 ENV PYTHONUNBUFFERED 1
 RUN mkdir /code
 WORKDIR /code
 ADD requirements.txt /code/
 RUN pip install -r requirements.txt
 ADD . /code/

我的docker-compose.yml:

version: '3'

services:
  db:
    image: mysql
  web:
    build: .
    command: python3 Project/myVirtual/backend/pri/manage.py runserver 0.0.0.0:8000
    volumes:
      - .:/code
    ports:
      - "8000:8000"
    depends_on:
      - db

我已将docker-compose.yaml更改为:

version: '3'

services:
  db:
    image: mysql
    environment:
      MYSQL_ROOT_PASSWORD: ""
      MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
  web:
    build: .
    command: python3 virtualPRI/PRI/backend/pri/manage.py runserver 0.0.0.0:8000
    volumes:
      - .:/code
    ports:
      - "8000:8000"
    depends_on:
      - db

但此时进程已被阻止

db_1   | 2017-06-13T05:16:16.457122Z 0 [Note] End of list of non-natively partitioned tables

或有时候我仍然会得到web_1 | django.db.utils.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1' (111)")

manage:py

#!/usr/bin/env python
import os
import sys

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "pri.settings")
    try:
        from django.core.management import execute_from_command_line
    except ImportError:
        # The above import may fail for some other reason. Ensure that the
        # issue is really that Django is missing to avoid masking other
        # exceptions on Python 2.
        try:
            import django
        except ImportError:
            raise ImportError(
                "Couldn't import Django. Are you sure it's installed and "
                "available on your PYTHONPATH environment variable? Did you "
                "forget to activate a virtual environment?"
            )
        raise
    execute_from_command_line(sys.argv)

1 个答案:

答案 0 :(得分:1)

127.0.0.1 (111)表示MySQL拒绝您的连接请求。我假设MySQL服务器和Django没有在同一个Docker实例中运行,是吗?

如果MySQL在其他地方运行,你应该确保在Django的配置文件中正确配置了MySQL连接。

解决方案1:您可以通过将MySQL的绑定地址从127.0.0.1更改为{{1}来允许远程访问MySQL(但我不建议您这样做) }。并正确更新MySQL DB连接设置。

在Linux中,您可以从0.0.0.0 注释掉这些行(位置可以不同)

/etc/my.cnf

有关更详细的说明,另请参阅https://dev.mysql.com/doc/refman/5.5/en/can-not-connect-to-server.html

解决方案2: (受@programerq评论的启发)您可以在主机操作系统或其他Docker实例中运行MySQL。由于MySQL默认绑定到skip-networking bind-address = 127.0.0.1 ,因此当您启动Django Docker实例时,可以将127.0.0.1映射到MySQLMachine:MySQLPort。因此,Django仍然可以连接到DjangoDocker:MySQLPort到MySQL而不会注意到MySQL实际上正在其他地方运行。

之前我在Docker集群项目中进行了一些端口映射,您可以check the commands I ran或查看官方Docker文档。

希望这些想法有所帮助,欢呼。