django-maintenancemode is a middleware that allows you to temporary shutdown your site for maintenance work.
Logged in users having staff credentials can still fully use the site as can users visiting the site from an ip address defined in Django's INTERNAL_IPS.
Download django-maintenancemode from http://pypi.python.org/pypi/django-maintenancemode or https://github.com/shanx/django-maintenancemode
Install using: python setup.py install or your prefered installer
In your Django settings file add maintenancemode to your MIDDLEWARE_CLASSES. Make sure it comes after Django's AuthenticationMiddleware. Like so:
MIDDLEWARE_CLASSES = ( 'django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.middleware.doc.XViewMiddleware', 'maintenancemode.middleware.MaintenanceModeMiddleware', )
django-maintenancemode works the same way as handling 404 or 500 error in Django work. It adds a handler503 which you can override in your main urls.py or you can add a 503.html to your templates directory.
In your Django settings file add a variable called MAINTENANCE_MODE. Setting this variable to True activates the middleware.
If you do not configure the settings below in your own project settings.py, they assume default values:
Boolean. Enable/disable maintenance mode.
Sequence of URL path regexes to exclude from the maintenance mode.
MAINTENANCE_IGNORE_URLS = ( r'^/docs/.*', r'^/contact' )
If user is logged in and staff member, the maintenance page is not displayed.
If user's IP is in INTERNAL_IPS, the maintenance page is not displayed.
To override the default view which is used if the maintenance mode is enabled you can simply define a handler503 variable in your ROOT_URLCONF, similar to how you would customize other error handlers, e.g.:
handler503 = 'mysite.views.maintenance_mode'