nginx is cutting the end of dynamic pages and caching them

Solution 1:

Check permission of these directories:

• client_body_temp_path
• proxy_temp_path
• fastcgi_temp_path

It is likely that one or all of these directories is not writable for nginx. These temp folders act as buffers for nginx when handling big requests, if nginx cannot write to them then nginx just returns the content which is stored in its memory.

You should also see errors similar to below in your error logs, if not check your log level / log path again.

2013/10/07 11:01:09 [crit] 3307#0: *33 open() "/var/lib/nginx/tmp/proxy/2/00/0000000002" failed (13: Permission denied) while reading upstream

Solution 2:

Possible connection with this bug http://www.ruby-forum.com/topic/4080504 , try updating nginx.