[英]Docker- django throws error while connecting to postgres: psycopg2.OperationalError: could not connect to server: Connection refused
[英]OperationalError while connecting django and mysql
我在将 mysql 数据库与 django 连接时遇到问题。 我已经尝试在互联网上找到解决方案,但没有任何帮助。 当我更改“setting.py”文件中的代码,然后在控制台中输入“python manage.py migrate”时:
(blog) PS C:\Users\kacpe\Dev\blog\blog\blog> python manage.py migrate Traceback (most recent call last):
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\base\base.py", line 217, in ensure_connection
self.connect()
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\base\base.py", line 195, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\mysql\base.py", line 227, in get_new_connection
return Database.connect(**conn_params)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\MySQLdb\__init__.py", line 84, in Connect
return Connection(*args, **kwargs)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\MySQLdb\connections.py", line 166, in __init__
super(Connection, self).__init__(*args, **kwargs2)
MySQLdb._exceptions.OperationalError: (2059, <NULL>)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line
utility.execute()
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\core\management\__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\core\management\base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\core\management\base.py", line 361, in execute
self.check()
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\core\management\base.py", line 387, in check
all_issues = self._run_checks(
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\core\management\commands\migrate.py", line 64, in _run_checks
issues = run_checks(tags=[Tags.database])
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\core\checks\registry.py", line 72, in run_checks
new_errors = check(app_configs=app_configs)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\core\checks\database.py", line 10, in check_database_backends
issues.extend(conn.validation.check(**kwargs))
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\mysql\validation.py", line 9, in check
issues.extend(self._check_sql_mode(**kwargs))
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\mysql\validation.py", line 13, in _check_sql_mode
with self.connection.cursor() as cursor:
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\base\base.py", line 256, in cursor
return self._cursor()
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\base\base.py", line 233, in _cursor
self.ensure_connection()
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\base\base.py", line 217, in ensure_connection
self.connect()
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\utils.py", line 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\base\base.py", line 217, in ensure_connection
self.connect()
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\base\base.py", line 195, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\django\db\backends\mysql\base.py", line 227, in get_new_connection
return Database.connect(**conn_params)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\MySQLdb\__init__.py", line 84, in Connect
return Connection(*args, **kwargs)
File "C:\Users\kacpe\Dev\blog\blog\lib\site-packages\MySQLdb\connections.py", line 166, in __init__
super(Connection, self).__init__(*args, **kwargs2)
django.db.utils.OperationalError: (2059, <NULL>)
这很令人沮丧,因为我无法修复它,而且我刚刚开始学习 Django。 预先感谢您的帮助。
我的来自“setting.py”的数据库代码:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'blog',
'USER': 'Shiraga',
'PASSWORD': 'MYPASSWORD',
'HOST': '127.0.0.1',
'PORT': '3306',
}
}
检查数据库的权限,登录 MySQL 并运行
GRANT ALL ON *.* TO 'root'@'localhost';
FLUSH PRIVILEGES;
请发布您的 Django settings.py 包含的内容。
好的,经过长时间的战斗,我能够解决问题。 我通过从 Python 3.8 切换到 3.7.5 解决了这个问题。 在 3.8 之前,通过“pip install mysqlclient”安装 mysqlclient 时发生错误,我被迫从该站点下载文件。 在更新创建环境的 3.7.5 版本中,没有出现此问题,迁移成功。
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