Gunicorn (and most WSGI servers) defaults to looking for the callable named application in whatever module you point it at. Adding an alias from myproject import myapp as application or application = myapp will let Gunicorn discover the callable again. However, the wsgi.py file or the alias aren’t needed, Gunicorn can be pointed directly at … Read more
Make sure gunicorn is in your requirements.txt
run guncorn with –preload can see the error log, like this gunicorn app:application –preload -b 0.0.0.0:5000 This will usually give you a more detailed error message.
Let me attempt an answer. Let us assume that at the beginning my deployment only has a single gunicorn worker. This allows me to handle only one request at a time. My worker’s work is just to make a call to google.com and get the search results for a query. Now I want to increase … Read more
Pre-forking basically means a master creates forks which handle each request. A fork is a completely separate *nix process. Update as per the comments below. The pre in pre-fork means that these processes are forked before a request comes in. They can however usually be increased or decreased as the load goes up and down. … Read more
You can start your app with multiple workers or async workers with Gunicorn. Flask server.py from flask import Flask app = Flask(__name__) @app.route(“https://stackoverflow.com/”) def hello(): return “Hello World!” if __name__ == “__main__”: app.run() Gunicorn with gevent async worker gunicorn server:app -k gevent –worker-connections 1000 Gunicorn 1 worker 12 threads: gunicorn server:app -w 1 –threads 12 … Read more
You could try upgrading the timeout for your proxy pass in Nginx by adding: proxy_connect_timeout 75s; proxy_read_timeout 300s; on /var/nginx/sites-available/[site-config] or /var/nginx/nginx.conf if you want to increase the timeout limite on all sites served by nginx. You must add –timeout 300 as well to your gunicorn process/config. This solved my problems in the past with … Read more
When in development mode and when you are using some other server for local development add this to your urls.py from django.contrib.staticfiles.urls import staticfiles_urlpatterns # … the rest of your URLconf goes here … urlpatterns += staticfiles_urlpatterns() Note that staticfiles_urlpatterns() will only work when DEBUG = True is set in your settings.py. More info here … Read more
You could do that by creating a custom Formatter using the built-in logger module. You can use the extra parameter when logging messages to pass contextual information, such as url and headers. Python’s JSON module already implements pretty-printing JSON data in the dump() function, using the indent parameter that allows you to define the indent … Read more
Because Gunicorn is starting with 8 workers (in your example), this forks the app 8 times into 8 processes. These 8 processes are forked from the Master process, which monitors each of their status & has the ability to add/remove workers. Each process gets a copy of your APScheduler object, which initially is an exact … Read more