偶尔出现 500 错误

Question

我们使用 Apache+mod_wsgi 来托管我们的 Django 应用程序。

阿帕奇：

WSGIScriptAlias / /home/rls/django_wsgi.py

django_wsgi.py：

import os, sys
sys.path.append('data/misc/django')
os.environ['DJANGO_SETTINGS_MODULE'] = 'rls.settings'

import django.core.handlers.wsgi

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

一切正常，但偶尔我们会在日志中收到 500 Internal Server Error：

mod_wsgi (pid=4825): Exception occurred processing WSGI script '/home/rls/django_wsgi.py'.
Traceback (most recent call last):
File "/usr/lib/python2.5/site-packages/django/core/handlers/wsgi.py", line 230, in __call__
self.load_middleware()
File "/usr/lib/python2.5/site-packages/django/core/handlers/base.py", line 33, in load_middleware
for middleware_path in settings.MIDDLEWARE_CLASSES:
File "/usr/lib/python2.5/site-packages/django/utils/functional.py", line 276, in __getattr__
self._setup()
File "/usr/lib/python2.5/site-packages/django/conf/__init__.py", line 40, in _setup
self._wrapped = Settings(settings_module)
File "/usr/lib/python2.5/site-packages/django/conf/__init__.py", line 75, in __init__
raise ImportError("Could not import settings '%s' (Is it on sys.path? Does it have syntax errors?): %s" % (self.SETTINGS_MODULE, e))
ImportError: Could not import settings 'rls.settings' (Is it on sys.path? Does it have syntax errors?): No module named rls.settings

当然，settings.py 中没有语法错误，因为它每隔一段时间就可以正常加载。我错过了什么？非常感谢您的帮助。

Answer 1

尝试将绝对路径设置为包含文件 settings.py 的目录。 在你的情况下应该是这样的：

sys.path.append('/%s/data/misc/django'%ROOT_2_DATA)

您还必须检查 apache 组是否具有读/写文件夹的权限。