ifnull/doc.md

Created June 3, 2014 22:11

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Solving Apache 503 “Service temporarily unavailable” error in Gunicorn/Apache on CentOS

Raw

doc.md

Error

[Tue Jun 03 22:05:51 2014] [error] (111)Connection refused: proxy: HTTP: attempt to connect to 127.0.0.1:8001 (127.0.0.1) failed
[Tue Jun 03 22:05:51 2014] [error] ap_proxy_connect_backend disabling worker for (127.0.0.1)
[Tue Jun 03 22:05:52 2014] [error] proxy: HTTP: disabled connection for (127.0.0.1)
[...]

The problem is that the Apache proxy module, recognising that the service was unavailable, stopped redirecting requests to it for one minute.

The problem was solved adding a retry=0 parameter to the ProxyPass directive.

Solution

Adjust the following lines in your vhost then restart Apache

ProxyPass / http://127.0.0.1:8001/ retry=0 timeout=5
ProxyPassReverse / http://127.0.0.1:8001/

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