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PO502 Bad Gateway error Nginx and uWSGI in deploying Flask app
 

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    <p>I'm trying to deploy a Flask app on a Linode VPS running Ubuntu 10.10. I've been following this tutorial (<a href="https://library.linode.com/web-servers/nginx/python-uwsgi/ubuntu-10.10-maverick#sph_configure-nginx" rel="nofollow">https://library.linode.com/web-servers/nginx/python-uwsgi/ubuntu-10.10-maverick#sph_configure-nginx</a>) but I keep getting a 502 Bad Gateway error.</p> <p>Here this is /etc/default/uwsgi:</p> <pre><code>PYTHONPATH=/var/www/reframeit-im MODULE=wsgi </code></pre> <p>Here is /var/www/reframeit-im/wsgi.py:</p> <pre><code># add the application directory to the python path import sys sys.path.append("/var/www/reframeit-im") # run flask app from reframeit import app as application </code></pre> <p>Here is the app's nginx config file, which is symlinked to the /sites-enabled directory (/opt/nginx/conf/sites-enabled/reframeit-im):</p> <pre><code>server { listen 80; server_name www.reframeit-im.coshx.com reframeit-im.coshx.com; access_log /var/www/reframeit-im/logs/access.log; error_log /var/www/reframeit-im/logs/error.log; location / { include uwsgi_params; uwsgi_pass 127.0.0.1:9001; } } </code></pre> <p>I checked the nginx error logs for the app and I found this:</p> <pre><code>2013/07/17 19:30:19 [error] 20037#0: *1 upstream prematurely closed connection while reading response header from upstream, client: 70.88.168.82, server: www.reframeit-im.coshx.com, request: "GET /favicon.ico HTTP/1.1", upstream: "uwsgi://127.0.0.1:9001", host: "reframeit-im.coshx.com" </code></pre> <p>Is there something wrong with my configuration?</p>
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