迁移错误（django.db.utils.OperationalError）

Question

我正在尝试迁移我的自定义用户模型，我运行 makemigrations 命令为新模型进行迁移。但是当我运行迁移命令时它抛出这个错误：

conn = _connect(dsn, connection_factory=connection_factory, **kwasync) django.db.utils.OperationalError

回溯：

    (venv_ruling) C:\Users\enosh\venv_ruling\ruling>python manage.py migrate
    Traceback (most recent call last):
      File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
        self.connect()
      File "C:\Users\enosh\venv_ruling\lib\site-packages\django\utils\asyncio.py", line 26, in inner
        return func(*args, **kwargs)
      File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\base\base.py", line 200, in connect
        self.connection = self.get_new_connection(conn_params)
      File "C:\Users\enosh\venv_ruling\lib\site-packages\django\utils\asyncio.py", line 26, in inner
        return func(*args, **kwargs)
      File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\postgresql\base.py", line 187, in get_new_connection
        connection = Database.connect(**conn_params)
      File "C:\Users\enosh\venv_ruling\lib\site-packages\psycopg2\__init__.py", line 127, in connect
        conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
    psycopg2.OperationalError
The above exception was the direct cause of the following exception:



Traceback (most recent call last):
  File "C:\Users\enosh\venv_ruling\ruling\manage.py", line 22, in <module>
    main()
  File "C:\Users\enosh\venv_ruling\ruling\manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\management\__init__.py", line 419, in execute_from_command_line
    utility.execute()
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\management\__init__.py", line 413, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\management\base.py", line 354, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\management\base.py", line 398, in execute
    output = self.handle(*args, **options)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\management\base.py", line 89, in wrapped
    res = handle_func(*args, **kwargs)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\management\commands\migrate.py", line 75, in handle
    self.check(databases=[database])
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\management\base.py", line 419, in check
    all_issues = checks.run_checks(
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\checks\registry.py", line 76, in run_checks
    new_errors = check(app_configs=app_configs, databases=databases)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\core\checks\model_checks.py", line 34, in check_all_models
    errors.extend(model.check(**kwargs))
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\models\base.py", line 1290, in check
    *cls._check_indexes(databases),
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\models\base.py", line 1680, in _check_indexes
    connection.features.supports_covering_indexes or
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\utils\functional.py", line 48, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\postgresql\features.py", line 93, in is_postgresql_11
    return self.connection.pg_version >= 110000
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\utils\functional.py", line 48, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\postgresql\base.py", line 329, in pg_version
    with self.temporary_connection():
  File "C:\Users\enosh\AppData\Local\Programs\Python\Python39\lib\contextlib.py", line 117, in __enter__
    return next(self.gen)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\base\base.py", line 603, in temporary_connection
    with self.cursor() as cursor:
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\base\base.py", line 259, in cursor
    return self._cursor()
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\base\base.py", line 235, in _cursor
    self.ensure_connection()
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
    self.connect()
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
    self.connect()
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\base\base.py", line 200, in connect
    self.connection = self.get_new_connection(conn_params)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\django\db\backends\postgresql\base.py", line 187, in get_new_connection
    connection = Database.connect(**conn_params)
  File "C:\Users\enosh\venv_ruling\lib\site-packages\psycopg2\__init__.py", line 127, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError

models.py

from django.contrib.auth.models import AbstractUser


class CustomUser(AbstractUser):
    """extend usermodel"""

    class Meta:
        verbose_name_plural = 'CustomUser'

settings.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'rulings',
        'USER': 'xxxxxxx',
        'PASSWORD': 'xxxxxxx',
        'HOST': '',
        'PORT': '',
    }
}

AUTH_USER_MODEL = 'accounts.CustomUser'

postgresql 的数据库是空的。(ver.12.6)

我刚刚在这个问题中提到了用户模型和设置，但如果需要更多代码，请告诉我我会用这些信息更新我的问题。谢谢

Answer 1

我不知道你是为了这个问题把端口留空还是它实际上是空的，但是在控制台试试看是否连接成功。

conn=psycopg2.connect(database="rulings", user="xxx", password="xxx",port=5432)

此外，这可能不是您的端口（它是默认端口，但您的端口可能会更改）请在 postgres shell 中检查您的端口号 \conninfo。如果有帮助，请告诉我。

迁移错误（django.db.utils.OperationalError）

Migration error(django.db.utils.OperationalError)

python

deployment

django

django-models

django-rest-framework