django：mod_wsgi 无法打开项目目录中的日志文件

Question

我正在尝试使用 mod_wsgi 部署我的项目。不幸的是，我得到：

[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64] Exception in WSGI handler: 
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64] Traceback (most recent call last):
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/home/project/project/wsgi/project.wsgi", line 26, in application
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     return handler(environ, start_response)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/site-packages/Django-1.2.1-py2.5.egg/django/core/handlers/wsgi.py", line 230, in __call__
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     self.load_middleware()
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/site-packages/Django-1.2.1-py2.5.egg/django/core/handlers/base.py", line 33, in load_middleware
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     for middleware_path in settings.MIDDLEWARE_CLASSES:
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/site-packages/Django-1.2.1-py2.5.egg/django/utils/functional.py", line 276, in __getattr__
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     self._setup()
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/site-packages/Django-1.2.1-py2.5.egg/django/conf/__init__.py", line 40, in _setup
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     self._wrapped = Settings(settings_module)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/site-packages/Django-1.2.1-py2.5.egg/django/conf/__init__.py", line 73, in __init__
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     mod = importlib.import_module(self.SETTINGS_MODULE)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/site-packages/Django-1.2.1-py2.5.egg/django/utils/importlib.py", line 35, in import_module
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     __import__(name)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/home/project/project/__init__.py", line 7, in <module>
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     logging.config.fileConfig(settings.LOG_CONFIG)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/logging/config.py", line 84, in fileConfig
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     handlers = _install_handlers(cp, formatters)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/logging/config.py", line 152, in _install_handlers
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     h = apply(klass, args)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/logging/handlers.py", line 109, in __init__
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     BaseRotatingHandler.__init__(self, filename, mode, encoding)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/logging/handlers.py", line 61, in __init__
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     logging.FileHandler.__init__(self, filename, mode, encoding)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]   File "/usr/lib/python2.5/logging/__init__.py", line 772, in __init__
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64]     stream = open(filename, mode)
[Wed Oct 27 15:32:33 2010] [error] [client 10.13.3.64] IOError: [Errno 13] Permission denied: 'project.log'

我的项目在 /etc/apache2/sites-enabled/ 中有一个条目：

SetEnv app_settings project.config.production
WSGIDaemonProcess project user=project group=project threads=1 processes=1 home=/home/project/project python-path=/home/project
<VirtualHost *>
        ServerName project.internal
        WSGIScriptAlias / /home/project/project/wsgi/project.wsgi
        WSGIProcessGroup %{GLOBAL}
</VirtualHost>

我的日志应该存储在项目目录中。我对此进行了一些调查，就在应该打开 project.log 之前，我运行了 os.getcwd()，它返回了 /。谁能告诉我，我可能配置错误导致发生这种情况？

Answer 1

这并不是一个很好的答案，但我将站点设置为仅使用绝对路径名，从 settings.py 中提取基本路径。您可以在 settings.py 中使用非官方 Django 设置名称的变量，只要您使用 ALLCAPS_WITH_UNDERSCORES 样式命名它们，您就可以使用 import settings 导入这些变量>。

IIRC，守护进程一般应该使用绝对路径名。显然，使用相对路径名可能是一个安全漏洞。

Answer 2

这与路径无关，与权限有关。

apache 用户正在尝试创建该日志文件，因此您应该授予它对该目录的写入权限。