Django manage.py 命令在 Cronjob 中生成错误

Question

每当我运行执行 manage.py 命令（例如迁移、运行服务器）时，一切都很好。我正在使用以下 Cronjob 命令：

* * * * * python3 /home/ec2-user/Project/manage.py migrate

但是，每当我在 Crontab 中安排 manage.py 命令时，就会出现以下错误：

File "/home/ec2-user/project/manage.py", line 22, in <module>
    main()
  File "/home/ec2-user/project/manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/core/management/__init__.py", line 419, in execute_from_command_line
    utility.execute()
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/core/management/__init__.py", line 395, in execute
    django.setup()
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/apps/registry.py", line 114, in populate
    app_config.import_models()
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/apps/config.py", line 301, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/lib64/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/contrib/auth/models.py", line 3, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/contrib/auth/base_user.py", line 48, in <module>
    class AbstractBaseUser(models.Model):
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/db/models/base.py", line 122, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/db/models/base.py", line 326, in add_to_class
    value.contribute_to_class(cls, name)
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/db/models/options.py", line 207, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/utils/connection.py", line 15, in __getattr__
    return getattr(self._connections[self._alias], item)
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/utils/connection.py", line 62, in __getitem__
    conn = self.create_connection(alias)
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/db/utils.py", line 204, in create_connection
    backend = load_backend(db['ENGINE'])
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/db/utils.py", line 111, in load_backend
    return import_module('%s.base' % backend_name)
  File "/usr/lib64/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/db/backends/sqlite3/base.py", line 73, in <module>
    check_sqlite_version()
  File "/home/ec2-user/.local/lib/python3.7/site-packages/django/db/backends/sqlite3/base.py", line 69, in check_sqlite_version
    'SQLite 3.9.0 or later is required (found %s).' % Database.sqlite_version
django.core.exceptions.ImproperlyConfigured: SQLite 3.9.0 or later is required (found 3.7.17).

我已经将 SQLite 更新到 3.3.38，Python shell 确认：

Python 3.7.10 (default, Jun  3 2021, 00:02:01) 
[GCC 7.3.1 20180712 (Red Hat 7.3.1-13)] on linux
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> import sqlite3
>>> sqlite3.sqlite_version
'3.38.5'

Answer 1

很遗憾，我无法找到问题的根源。然而，将我的 Django 版本降级到 2.0 确实解决了这个问题，因为这个版本的 Django 没有验证 SQLite3 版本。

Django manage.py 命令在 Cronjob 中生成错误

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