Gunicorn worker timeout error

Question

I have setup gunicorn with 3 workers 30 worker connections and using eventlet worker class. It is setup behind Nginx. After every few requests, I see this in the logs.

[ERROR] gunicorn.error: WORKER TIMEOUT (pid:23475)
None
[INFO] gunicorn.error: Booting worker with pid: 23514

Why is this happening? How can I figure out whats going wrong?

thanks

Answer 1

We had the same problem using Django+nginx+gunicorn. From Gunicorn documentation we have configured the graceful-timeout that made almost no difference.

After some testings, we found the solution, the parameter to configure is: timeout (And not graceful timeout). It works like a clock..

So, Do:

1) open the gunicorn configuration file

2) set the TIMEOUT to what ever you need - the value is in seconds

NUM_WORKERS=3
TIMEOUT=120

exec gunicorn ${DJANGO_WSGI_MODULE}:application 
--name $NAME 
--workers $NUM_WORKERS 
--timeout $TIMEOUT 
--log-level=debug 
--bind=127.0.0.1:9000 
--pid=$PIDFILE