Django与mod_wsgi的数据库连接问题

Question

我注意到，每当我在我的django项目中启用数据库设置时（是不是发现我问的问题有点规律了？），就会出现内部服务器错误。如果把数据库设置留空，这个错误就消失了。下面是它输出的apache错误日志。

mod_wsgi (pid=770): Exception occurred processing WSGI script '/Users/teifionjordan/rob2/apache/django.wsgi'.
Traceback (most recent call last):
  File "/Library/Python/2.5/site-packages/django/core/handlers/wsgi.py", line 239, in __call__
    response = self.get_response(request)
  File "/Library/Python/2.5/site-packages/django/core/handlers/base.py", line 67, in get_response
    response = middleware_method(request)
  File "/Library/Python/2.5/site-packages/django/contrib/sessions/middleware.py", line 9, in process_request
    engine = __import__(settings.SESSION_ENGINE, {}, {}, [''])
  File "/Library/Python/2.5/site-packages/django/contrib/sessions/backends/db.py", line 2, in <module>
    from django.contrib.sessions.models import Session
  File "/Library/Python/2.5/site-packages/django/contrib/sessions/models.py", line 4, in <module>
    from django.db import models
  File "/Library/Python/2.5/site-packages/django/db/__init__.py", line 16, in <module>
    backend = __import__('%s%s.base' % (_import_path, settings.DATABASE_ENGINE), {}, {}, [''])
  File "/Library/Python/2.5/site-packages/django/db/backends/mysql/base.py", line 10, in <module>
    import MySQLdb as Database
  File "build/bdist.macosx-10.5-i386/egg/MySQLdb/__init__.py", line 19, in <module>
  File "build/bdist.macosx-10.5-i386/egg/_mysql.py", line 7, in <module>
  File "build/bdist.macosx-10.5-i386/egg/_mysql.py", line 4, in __bootstrap__
  File "/Library/Python/2.5/site-packages/setuptools-0.6c9-py2.5.egg/pkg_resources.py", line 841, in resource_filename
    self, resource_name
  File "/Library/Python/2.5/site-packages/setuptools-0.6c9-py2.5.egg/pkg_resources.py", line 1310, in get_resource_filename
    self._extract_resource(manager, self._eager_to_zip(name))
  File "/Library/Python/2.5/site-packages/setuptools-0.6c9-py2.5.egg/pkg_resources.py", line 1332, in _extract_resource
    self.egg_name, self._parts(zip_path)
  File "/Library/Python/2.5/site-packages/setuptools-0.6c9-py2.5.egg/pkg_resources.py", line 921, in get_cache_path
    self.extraction_error()
  File "/Library/Python/2.5/site-packages/setuptools-0.6c9-py2.5.egg/pkg_resources.py", line 887, in extraction_error
    raise err
ExtractionError: Can't extract file(s) to egg cache

The following error occurred while trying to extract file(s) to the Python egg
cache:

  [Errno 20] Not a directory: '/Library/WebServer/.python-eggs/MySQL_python-1.2.2-py2.5-macosx-10.5-i386.egg-tmp'

The Python egg cache directory is currently set to:

  /Library/WebServer/.python-eggs

Perhaps your account does not have write access to this directory?  You can
change the cache directory by setting the PYTHON_EGG_CACHE environment
variable to point to an accessible directory.

这是django.wsgi文件的内容。

import os
import sys

os.environ['DJANGO_SETTINGS_MODULE'] = 'rob2.settings'

sys.path.append('/Users/teifionjordan')

import django.core.handlers.wsgi
application = django.core.handlers.wsgi.WSGIHandler()

我还有其他几个脚本，它们都能正常连接到mysql数据库。如果我运行教程服务器，管理面板也能正常显示。我尝试过更改环境变量，但还是没有任何变化。

mysql django apache mod_wsgi 数据库连接内部服务器错误

Django与mod_wsgi的数据库连接问题

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