nginx+uwsgi+django报错：[Errno 13] Permission denied: ‘/root/.python-eggs’

转自：http://blog.csdn.net/leiyonglin/article/details/7186660

 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 13] Permission denied: '/root/.python-eggs'

实际上也就是：安装的MySQL_python-1.2.3c1-py2.6-linux-x86_64.egg需要解压到/root/.python-eggs目录，而Apache访问的用户并没有该目录的write权限。

一个fix方法是在修改你的django.wsgi文件，添加PYTHON_EGG_CACHE的设置，先

mkdir  /tmp/.python-eggs
uwsgi.py 加上：

 if sys.platform <> "win32":
               os.environ['PYTHON_EGG_CACHE'] = '/tmp/.python-eggs'

另一个简单的fix的方法就是将MySQL解压成目录结构：

 $ cd /usr/lib/python2.6/site-packages/ (or wherever your site-packages are)
 $ file MySQL_python-1.2.3c1-py2.6-linux-x86_64.egg
 $ unzip -t MySQL_python-1.2.3c1-py2.6-linux-x86_64.egg
 $ mv MySQL_python-1.2.3c1-py2.6-linux-x86_64.egg foo.zip
 $ mkdir MySQL_python-1.2.3c1-py2.6-linux-x86_64.egg
 $ cd MySQL_python-1.2.3c1-py2.6-linux-x86_64.egg/
 $ unzip ../foo.zip
 $ rm ../foo.zip

关于django发布时发生的500错误

在完成所有配置，应用程序也已经初始化了（数据库），但是在访问的时候发生了500的错误，不得其解，权限什么的也重新分配了，但问题依旧，在查看日志的时候，发现了这样的错误：

mod_wsgi (pid=2939): Exception occurred processing WSGI script '/web/wsgi/mysite.wsgi'.

[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] Traceback (most recent call last):

[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/core/handlers/wsgi.py", line 241, in __call__
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     response = self.get_response(request)
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/core/handlers/base.py", line 73, in get_response
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     response = middleware_method(request)
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/contrib/sessions/middleware.py", line 10, in process_request
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     engine = import_module(settings.SESSION_ENGINE)
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/utils/importlib.py", line 35, in import_module
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     __import__(name)
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/contrib/sessions/backends/db.py", line 2, in <module>
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     from django.contrib.sessions.models import Session
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/contrib/sessions/models.py", line 4, in <module>
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     from django.db import models
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/db/__init__.py", line 41, in <module>
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     backend = load_backend(settings.DATABASE_ENGINE)
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/db/__init__.py", line 17, in load_backend
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     return import_module('.base', 'django.db.backends.%s' % backend_name)
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/utils/importlib.py", line 35, in import_module
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     __import__(name)
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/django/db/backends/mysql/base.py", line 10, in <module>
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     import MySQLdb as Database
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "build/bdist.linux-i686/egg/MySQLdb/__init__.py", line 19, in <module>
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "build/bdist.linux-i686/egg/_mysql.py", line 7, in <module>
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "build/bdist.linux-i686/egg/_mysql.py", line 4, in __bootstrap__
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py", line 800, in resource_filename
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     self, resource_name
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py", line 1228, in get_resource_filename
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     self._extract_resource(manager, self._eager_to_zip(name))
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py", line 1250, in _extract_resource
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     self.egg_name, self._parts(zip_path)
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py", line 880, in get_cache_path
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     self.extraction_error()
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   File "/usr/local/python25/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py", line 846, in extraction_error
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]     raise err
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] ExtractionError: Can't extract file(s) to egg cache
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] 
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] The following error occurred while trying to extract file(s) to the Python egg
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] cache:
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] 
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   [Errno 13] Permission denied: '/root/.python-eggs'
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] 
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] The Python egg cache directory is currently set to:
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] 
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172]   /root/.python-eggs
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] 
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] Perhaps your account does not have write access to this directory? You can
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] change the cache directory by setting the PYTHON_EGG_CACHE environment
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] variable to point to an accessible directory.
[Sat Jan 23 13:49:40 2010] [error] [client 120.32.59.172] 

这样的话意思是缓存没有权限写入，于是在mysite.wsgi里加了这么一句话，设置cache的路径，要保证该路径的文件夹权限是可写的。

os.environ['PYTHON_EGG_CACHE'] = '/tmp'