Pourquoi mon application Django n'écrit-elle pas dans son fichier journal?

$ sudo /etc/init.d/apache2 restartPourquoi mon application Django n'écrit-elle pas dans son fichier journal?

* Restarting web server apache2 
... waiting . ...done.

nom d'utilisateur @ servername jeu 4 novembre 18:54:37 ~/public_html/IDM_app
$ queue -n 60 sudo/var/log/apache2/error.log

[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] mod_wsgi (pid=28760): Exception occurred processing WSGI script '/home/username/public_html/idm.wsgi'. 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] Traceback (most recent call last): 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/site-packages/Django-1.2.3-py2.7.egg/django/core/handlers/wsgi.py", line 230, in __call__ 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  self.load_middleware() 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/site-packages/Django-1.2.3-py2.7.egg/django/core/handlers/base.py", line 33, in load_middleware 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  for middleware_path in settings.MIDDLEWARE_CLASSES: 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/site-packages/Django-1.2.3-py2.7.egg/django/utils/functional.py", line 276, in __getattr__ 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  self._setup() 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/site-packages/Django-1.2.3-py2.7.egg/django/conf/__init__.py", line 40, in _setup 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  self._wrapped = Settings(settings_module) 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/site-packages/Django-1.2.3-py2.7.egg/django/conf/__init__.py", line 73, in __init__ 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  mod = importlib.import_module(self.SETTINGS_MODULE) 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/site-packages/Django-1.2.3-py2.7.egg/django/utils/importlib.py", line 35, in import_module 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  __import__(name) 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/home/username/public_html/IDM_app/settings.py", line 60, in <module> 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  from settings_local import * 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/home/username/public_html/IDM_app/settings_local.py", line 1, in <module> 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  from settings_Slicehost_idm import * 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/home/username/public_html/IDM_app/settings_Slicehost_idm.py", line 12, in <module> 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  format='%(pathname)s TIME: %(asctime)s MSG: %(filename)s:%(funcName)s:%(lineno)d %(message)s', 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/logging/__init__.py", line 1500, in basicConfig 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  hdlr = FileHandler(filename, mode) 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/logging/__init__.py", line 889, in __init__ 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  StreamHandler.__init__(self, self._open()) 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] File "/usr/local/lib/python2.7/logging/__init__.py", line 908, in _open 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38]  stream = open(self.baseFilename, self.mode) 
[Thu Nov 04 18:54:27 2010] [error] [client 8.17.58.38] IOError: [Errno 13] Permission denied: '/home/username/public_html/IDM_app/log/django.osqa.log' 
[Thu Nov 04 18:54:36 2010] [notice] caught SIGTERM, shutting down 
[Thu Nov 04 18:54:37 2010] [notice] Apache/2.2.14 (Ubuntu) mod_wsgi/3.3 Python/2.7 configured -- resuming normal operations

nom d'utilisateur @ servername jeu 4 novembre 18:54:42 ~/public_html/IDM_app
$ ls -l/home/nom d'utilisateur/public_htm l/IDM_app/log/django.osqa.log

-rw-r--r-- 1 username 0 Nov 4 18:24 /home/username/public_html/IDM_app/log/django.osqa.log

nom d'utilisateur @ servername Jeu 4 novembre 19:08:41 ~/public_html/IDM_app
** ls -l $ ~/public_html/idm.wsgi **

-rw-r--r-- 1 username 222 Nov 4 18:53 /home/username/public_html/idm.wsgi

nom d'utilisateur @ servername jeu 4 novembre 19:10:50 ~/public_html/IDM_app
$ cat ~/public_html/idm.wsgi

import os 
import sys 

sys.path.append('/home/username/public_html/IDM_app/') 

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

import django.core.handlers.wsgi 

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

nom d'utilisateur @ servername jeu 4 novembre 19:11:02 ~/public_html/IDM_app $ whoami

username

Si Apache2 utilise le fichier de configuration de l'hôte virtuel @ ~/public_html/de idm.wsgi, ce que l'utilisateur le système pense-t-il essayer d'écrire le journal du fichier journal/django.osqa.log?