django-maintenance-mode shows a 503 error page when maintenance-mode is on.

It works at application level, so your django instance should be up.

It doesn't use database and doesn't prevent database access.

##Requirements

• Python 2.6, Python 2.7
• Django 1.5 through Django 1.8

##Installation

1. Run pip install django-maintenance-mode or download django-maintenance-mode and add the maintenance_mode package to your project
2. Add 'maintenance_mode' to settings.INSTALLED_APPS before custom applications
3. Add 'maintenance_mode.middleware.MaintenanceModeMiddleware' to settings.MIDDLEWARE_CLASSES as last middleware
4. Add your custom templates/503.html file
5. Restart your application server

##Configuration (optional)

All these settings are optional, if not defined in settings.py the default values (listed below) will be used.

#if True the maintenance-mode will be activated
MAINTENANCE_MODE = False

#if True the staff will not see the maintenance-mode page
MAINTENANCE_MODE_IGNORE_STAFF = False

#if True the superuser will not see the maintenance-mode page
MAINTENANCE_MODE_IGNORE_SUPERUSER = False

#list of ip-addresses that will not be affected by the maintenance-mode
#ip-addresses will be used to compile regular expressions objects
MAINTENANCE_MODE_IGNORE_IP_ADDRESSES = ()

#list of urls that will not be affected by the maintenance-mode
#urls will be used to compile regular expressions objects
MAINTENANCE_MODE_IGNORE_URLS = ()

#the absolute url where users will be redirected to during maintenance-mode
MAINTENANCE_MODE_REDIRECT_URL = None

#the template that will be shown by the maintenance-mode page
MAINTENANCE_MODE_TEMPLATE = '503.html'

Add maintenance_mode.urls to urls.py if you want superusers able to set maintenance_mode using urls.

urlpatterns = patterns('',
    ...
    url(r'^maintenance-mode/', include('maintenance_mode.urls')),
    ...
)

##Usage

####Python

from maintenance_mode.core import get_maintenance_mode, set_maintenance_mode

set_maintenance_mode(True)

if get_maintenance_mode():
    set_maintenance_mode(False)

or

from django.core.management import call_command
from django.core.management.base import BaseCommand


class Command(BaseCommand):
    
    def handle(self, *args, **options):
        
        call_command('maintenance_mode', 'on')
        
        #call your command(s)
        
        call_command('maintenance_mode', 'off')
        
        
        

####Terminal

Run python manage.py maintenance_mode <on|off>

(This is not Heroku-friendly because any execution of heroku run manage.py will be run on a separate worker dyno, not the web one. Therefore the state-file is set but on the wrong machine)

####URLs Superusers can change maintenance-mode using the following urls:

/maintenance-mode/off/

/maintenance-mode/on/

##License The MIT License (MIT)

Copyright (c) 2015 Fabio Caccamo - [email protected]

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.