Once I change the DEBUG = False, my site will generate 500 (using wsgi & manage.py runserver), and there is no error info in Apache error log and it will run normally when I change debug to True .
I'm using Django 1.5 & Python 2.7.3 here is Apache access log and without any log in apache error log
import os.path DEBUG = False #TEMPLATE_DEBUG = DEBUG HERE = os.path.dirname(__file__) ADMINS = ( ('admin', 'xyzadmin@qq.com'), ) MANAGERS = ADMINS DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', # Add 'postgresql_psycopg2', 'mysql', 'sqlite3' or 'oracle'. 'NAME': 'zdm', # Or path to database file if using sqlite3. 'USER': 'root', # Not used with sqlite3. 'PASSWORD': 'passwd', # Not used with sqlite3. 'HOST': '', # Set to empty string for localhost. Not used with sqlite3. 'PORT': '', # Set to empty string for default. Not used with sqlite3. } } # Local time zone for this installation. Choices can be found here: # http://en.wikipedia.org/wiki/List_of_tz_zones_by_name # although not all choices may be available on all operating systems. # In a Windows environment this must be set to your system time zone. TIME_ZONE = 'America/Chicago' # Language code for this installation. All choices can be found here: # http://www.i18nguy.com/unicode/language-identifiers.html LANGUAGE_CODE = 'en-us' SITE_ID = 1 # If you set this to False, Django will make some optimizations so as not # to load the internationalization machinery. USE_I18N = True # If you set this to False, Django will not format dates, numbers and # calendars according to the current locale. USE_L10N = True # If you set this to False, Django will not use timezone-aware datetimes. USE_TZ = True # Absolute filesystem path to the directory that will hold user-uploaded files. # Example: "/home/media/media.lawrence.com/media/" MEDIA_ROOT = '' # URL that handles the media served from MEDIA_ROOT. Make sure to use a # trailing slash. # Examples: "http://media.lawrence.com/media/", "http://example.com/media/" MEDIA_URL = '' # Absolute path to the directory static files should be collected to. # Don't put anything in this directory yourself; store your static files # in apps' "static/" subdirectories and in STATICFILES_DIRS. # Example: "/home/media/media.lawrence.com/static/" #STATIC_ROOT = os.path.join(HERE, 'static').replace('\\','/') # URL prefix for static files. # Example: "http://media.lawrence.com/static/" STATIC_URL = '/static/' #STATIC_ROOT = os.path.join(HERE, 'static').replace('\\','/') S= os.path.join(HERE, 'static').replace('\\','/') # Additional locations of static files STATICFILES_DIRS = ( # Put strings here, like "/home/html/static" or "C:/www/django/static". # Always use forward slashes, even on Windows. # Don't forget to use absolute paths, not relative paths. '/home/zdm/static', ) # List of finder classes that know how to find static files in # various locations. STATICFILES_FINDERS = ( 'django.contrib.staticfiles.finders.FileSystemFinder', 'django.contrib.staticfiles.finders.AppDirectoriesFinder', # 'django.contrib.staticfiles.finders.DefaultStorageFinder', ) # Make this unique, and don't share it with anybody. SECRET_KEY = '9a7!^gp8ojyk-^^d@*whuw!0rml+r+uaie4ur$(do9zz_6!hy0' # List of callables that know how to import templates from various sources. TEMPLATE_LOADERS = ( 'django.template.loaders.filesystem.Loader', 'django.template.loaders.app_directories.Loader', # 'django.template.loaders.eggs.Loader', ) MIDDLEWARE_CLASSES = ( 'django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', # Uncomment the next line for simple clickjacking protection: # 'django.middleware.clickjacking.XFrameOptionsMiddleware', ) ROOT_URLCONF = 'zdm.urls' # Python dotted path to the WSGI application used by Django's runserver. WSGI_APPLICATION = 'zdm.wsgi.application' TEMPLATE_DIRS = ( # Put strings here, like "/home/html/django_templates" or "C:/www/django/templates". # Always use forward slashes, even on Windows. # Don't forget to use absolute paths, not relative paths. '/home/zdm/templates', ) INSTALLED_APPS = ( 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.staticfiles', # Uncomment the next line to enable the admin: 'django.contrib.admin', # Uncomment the next line to enable admin documentation: # 'django.contrib.admindocs', 'zdm', 'portal', 'admin', 'tagging', )
回答1:
Django 1.5 introduced the allowed hosts setting that is required for security reasons. A settings file created with Django 1.5 has this new section which you need to add:
# Hosts/domain names that are valid for this site; required if DEBUG is False # See https://docs.djangoproject.com/en/1.9/ref/settings/#allowed-hosts ALLOWED_HOSTS = []
I know this is late but I ended up here with a search for my error 500 with DEBUG=False, in my case it did turn out to be the ALLOWED_HOSTS but I was using os.environ.get('variable') to populate the hosts, I did not notice this until I enabled logging, you can log all errors to file with the below and it will log even when DEBUG=False:
Right, in Django 1.5 if DEBUG = False, configure ALLOWED_HOSTS, adding domains without the port number. example:
ALLOWED_HOSTS = ['localhost']
回答5:
You must also check your URLs all over the place. When the DEBUG is set to False, all URLs without trailing / are treated as a bug, unlike when you have DEBUG = True, in which case Django will append / everywhere it is missing. So, in short, make sure all links end with a slash EVERYWHERE.
回答6:
I have a hilarious story for all. After reaching this page I said "Eureka! I'm saved. That MUST be my problem." So I inserted the required ALLOWED_HOSTS list in setting.py and... nothing. Same old 500 error. And no, it wasn't for lack of a 404.html file.
So for 2 days I busied myself with wild theories, such as that it had something to do with serving static files (understand that I am a noob and noobs don't know what they're doing).
So what was it? It is now Mr. Moderator that we come to a useful tip. Whereas my development Django is version 1.5.something, my production server version is 1.5.something+1... or maybe plus 2. Whatever. And so after I added the ALLOWED_HOSTS to the desktop version of settings.py, which lacked what hwjp requested--- a "default value in settings.py, perhaps with an explanatory comment"--- I did the same on the production server with the proper domain for it.
But I failed to notice that on the production server with the later version of Django there WAS a default value in settings.py with an explanatory comment. It was well below where I made my entry, out of sight on the monitor. And of course the list was empty. Hence my waste of time.
回答7:
I faced the same problem when I did DEBUG = FALSE. Here is a consolidated solution as scattered in answers above and other posts.
By default, in settings.py we have ALLOWED_HOSTS = [] . Here are possible changes you will have to make in ALLOWED_HOSTS value as per scenario to get rid of the error:
1: Your domain name:
ALLOWED_HOSTS = ['www.example.com'] # Your domain name here
2: Your deployed server IP if you don't have domain name yet (which was my case and worked like a charm):
ALLOWED_HOSTS = ['123.123.198.123'] # Enter your IP here
3: If you are testing on local server, you can edit your settings.py or settings_local.py as:
ALLOWED_HOSTS = ['localhost', '127.0.0.1']
4: You can also provide '*' in the ALLOWED_HOSTS value but its not recommended in the production environment due to security reasons:
ALLOWED_HOSTS = ['*'] # Not recommended in production environment
I have also posted a detailed solution on my blog which you may want to refer.
回答8:
For what it's worth - I was getting a 500 with DEBUG = False on some pages only. Tracing back the exception with pdb revealed a missing asset (I suspect the {% static ... %} template tag was the culprit for the 500.
回答9:
Complementing the main answer It is annoying to change the ALLOWED_HOSTS and DEBUG global constants in settings.py when switching between development and production. I am using this code to set these setting automatically:
ALLOWED_HOSTS is NOT the only issue, for me I had to make a 404.html and put it in the base level of my templates (not app level) - Also, you can make a 404 view and add a 404handler url but I think thats optional. 404.html fixed it
got this from another S/O post that I cannot find it
EDIT
also, I get 500 errors when I serve assets with whitenoise. Could not figure that out for the life of me, error was ValueError from whitenoise not being able to find an asset that I also could not find, had to go with default django serving for now
回答11:
I know that this is a super old question, but maybe I could help some one else. If you are having a 500 error after setting DEBUG=False, you can always run the manage.py runserver in the command line to see any errors that wont appear in any web error logs.
回答12:
I was searching and testing more about this issue and I realized that static files direcotiries specified in settings.py can be a cause of this, so fist, we need to run this command
python manage.py collecstatic
in settings.py, the code should look something like this:
In my case, the error was ValueError: Missing staticfiles manifest entry for 'admin/css/base.css'. I fixed that by locally running python manage.py collectstatic.
回答14:
I think it could also be the http server settings. Mine is still broken and had ALLOWED_HOSTS the entire time. I can access it locally (i use gunicorn), but not via the domain name when DEBUG=False. when I try using the domain name it then gives me the error, so makes me think its a nginx related issue.
Here is my conf file for nginx:
server { listen 80; server_name localhost myproject.ca www.myproject.ca; root /var/web/myproject/deli_cms; # serve directly - analogous for static/staticfiles location /media/ { # if asset versioning is used if ($query_string) { expires max; } } location /admin/media/ { # this changes depending on your python version root /var/web/myproject/lib/python2.6/site-packages/django/contrib; } location /static/ { alias /var/web/myproject/deli_cms/static_root/; } location / { proxy_pass_header Server; proxy_set_header Host $http_host; proxy_redirect off; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Scheme $scheme; proxy_connect_timeout 10; proxy_read_timeout 10; proxy_pass http://localhost:8000/; } # what to serve if upstream is not available or crashes error_page 500 502 503 504 /media/50x.html; }
回答15:
I have the similar issue, in my case it was caused by having a Commented script inside the body tag.
回答16:
I ran into this issue. Turns out I was including in the template, using the static template tag, a file that did not exist anymore. A look in the logs showed me the problem.
I guess this is just one of many possible reasons for this kind of error.
Moral of the story: always log errors and always check logs.
回答17:
Thanks to @squarebear, in the log file, I found the error: ValueError: The file 'myapp/styles.css' could not be found with .
I had a few problems in my django app. I removed the line STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage' which I found from the heroku's documentation.
I also had to add extra directory (thanks to another SO answer) static in the root of django application as myapp/static even though I wasn't using it. Then running the command python manage.py collectstatic before running the server solved the problem. Finally, it started working fine.
回答18:
I know this is an old question, but I was also getting a 500 error when DEBUG=False. After several hours, I realized I had forgot to end some of the links in my base.html with a trailing slash.
回答19:
This is old and my problem ended up being related to the problem but not for the OP but my solution is for anyone else who tried the above to no avail.
I had a setting in a modified version of Django to minify CSS and JS files that only ran when DEBUG was off. My server did not have the CSS minifier installed and threw the error. If you are using Django-Mako-Plus, this might be your issue.
回答20:
One small thing to note, If the array has None in it, then all the subsequent allowed hosts are ignored.
ALLOWED_HOSTS = [ "localhost", None, 'example.com', # First DNS alias (set up in the app) #'www.example.com', # Second DNS alias (set up in the app) ]
Django version 1.8.4
回答21:
A bit late to the party, and off course there could be a legion of issues but I've had a similar issue and it turned out that I had {% %} special characters inside my html remark...
回答22:
I had one view that threw a 500 error in debug=false but worked in debug=true. For anyone who is getting this kind of thing and Allowed Hosts is not the problem, I fixed my view by updating a template's static tag that was pointing to the wrong location.
So I'd suggest just checking links and tags are airtight in any templates used, maybe certain things slip through the net in debug but give errors in production.
回答23:
I found yet another cause of the 500 error when DEBUG=False. I use the Django compressor utility and our front-end engineer added references to font files inside a compress css block in a Django template. Like this:
{% compress css %} {% endcompress %}
The solution was to move the link to the ttf file below the endcompress line.
回答24:
If you want to allow for all hosts. Use ALLOWED_HOSTS = ['*',] instead of ALLOWED_HOSTS = ['*']
