How to restart django server from application?

Question

Django

It so happened that in one of the applications, after updating the data, you need to re-read all the settings by restarting the server. I restart the update of the wsgi.py file through my own function, the problem is that if you call the function from views.py, then the server goes down for a short time, which I successfully catch (ERR_EMPTY_RESPONSE). I don't understand how and where to insert some time.sleep(2) to avoid this.

Answer 1

IMHO curve architecture - how it is possible to give to restart the server to the client? and if you are hacked and put in a restart loop?
You can read more about "It so happened that in one of the applications after updating the data you need to re-read all the settings through restarting the server" - you need to dig here. Maybe you need to store the variable part not in the settings, but in the database, for example?

Answer 2

This may be needed only if you generate code and write it to a file "on the fly"
// purely theoretically, there is an option with uWSGI. Set touch-reload=/path/to/settings.py
uwsgi-docs.readthedocs.org/en/latest/Management.html
There are several ways to make uWSGI gracefully restart.

# using kill to send the signal
kill -HUP `cat /tmp/project-master.pid`
# or the convenience option --reload
uwsgi --reload /tmp/project-master.pid
# or if uwsgi was started with touch-reload=/tmp/somefile
touch /tmp/somefile

If a separate application is being created, then it is better to look towards deployment scripts

Answer 3

It is possible through sys.exec (well, through sudo), but they only correctly tell you that you have chosen some rotten path.
Teach the application to update these settings on the fly.