I've put together an integration server for our Django-powered application. A few of the features are still experimental, and result in overly long requests.
I'm okay with the poor performance, for now, but I need to be able to integrate. Whenever we use the feature that leads to a long request, the app hangs (as expected) and then, after maybe a minute and a half, returns a '502 - Bad Gateway'. The rest of the app works fine.
I checked the gunicorn log, and whenever this happens I get a line like
2012-01-20 17:30:13  [DEBUG] GET /results/ 2012-01-20 17:30:43  [ERROR] WORKER TIMEOUT (pid:23128) Traceback (most recent call last): File "/home/demo/python_envs/frontend/lib/python2.6/site-packages/gunicorn/app/base.py", line 111, in run os.setpgrp() OSError: [Errno 1] Operation not permitted
however, this happens long before the actual worker timeout, which I've set to 10 minutes just to make sure. Here's part of the upstart script that runs gunicorn.
description "..." start on runlevel  stop on runlevel [!2345] #Send KILL after 5 seconds kill timeout 5 respawn env VENV="/path/to/a/virtual/env/" #how to know the pid pid file $VENV/run/guniconr-8080.pid script exec sudo -u demo $VENV/bin/gunicorn_django --preload --daemon -w 4 -t 600 --log-level debug --log-file $VENV/run/gunicorn-8080.log -p $VENV/run/gunicorn-8080.pid -b localhost:8080 /path/to/settings.py end script
I'm running gunicorn version 0.13.4. Any help would be greatly appreciated.