I recommend you to do this checks by hand rather than automatically, so you'll feel more comfortable using django-fagungis.
Assuming you've runned the setup with the default settings present in fabfile.prod, you can test its correctness by following these steps on your server:
Dependencies correctly installed
if not already installed on the server, the "setup" task will install all dependencies for you
dpkg -l "mercurial*" dpkg -l "python-pip*" dpkg -l "nginx*" dpkg -l "supervisor*"
Django user exists
getent passwd django
Check folder structure
/opt/django/ logs/ nginx/ projects/ configs/ nginx/ supervisord/ scripts/ htdocs/ tmp/
Project correctly cloned
check if your project have been correctly cloned from your REPOSITORY setted in fabfile.py
cd /opt/django/projects/project_prod/ hg pull -u
Virtualenv correctly created
source /opt/django/envs/project_prod/bin/activate deactivate
Project requirements correctly installed
Check if all your requirements from requirements.txt of your project are satisfied, example check gunicorn presence.
source /opt/django/envs/project_prod/bin/activate python >>> import gunicorn >>> gunicorn.__version__
Check your project nginx configuration
nginx conf file correctly uploaded
symlink to sites-enabled correctly created
ls -l /etc/nginx/sites-enabled/ | grep project_prod
run nginx test configuration
nginx -t -c /etc/nginx/nginx.conf
check nginx on your browser
you must view the nginx message: Welcome to nginx!
Rungunicorn script presence
ls -l /opt/django/scripts/rungunicorn_project_prod.sh less /opt/django/scripts/rungunicorn_project_prod.sh
supervisord conf file correctly uploaded
supervisord loaded your project
probably status will show you that the project process doesn't started, don't worry! The most important thing is that the project is loaded by supervisor, now you must run the deploy fab task to correctly start your project.
Now you're ready to run: fab prod deploy
PS: to redo the setup you must delete your project: rm -rf /opt/django/projects/project_prod/