Dropped connections on our Nginx
mdounin at mdounin.ru
Wed Jun 20 12:48:10 UTC 2012
On Wed, Jun 20, 2012 at 10:52:36AM +0800, Mauro Stettler wrote:
> When the problem happens, i see statements like this one in the access
> log. As you can see the Nginx says HTTP status code and length both
> are 0:
> <ip> - - [20/Jun/2012:04:13:23 +0200] "POST
> HTTP/1.1" 0 0 "<referer>" "Mozilla/5.0 (X11; U; Linux x86_64; en-US;
> rv:22.214.171.124) Gecko/20091216 Mandriva Linux/126.96.36.199-0.1mdv2010.0
> (2010.0) Firefox/3.5.6"
The status 0 suggests there is a major problem which caused
request to be terminated abnormally before status was set. This
might happen if there is lack of some resources (e.g. no memory) -
this should have an entry in error log though.
Alternatively, this might happen due to some bug, which doesn't
seems unrealistic specially given the number of 3rd party modules
> Now I don't really know what else to check anymore... I would be
> really glad if somebody had some ideas?
I would recommend to:
1. Try to reproduce the problem without 3rd party modules/patches.
2. Try to obtain debug log of a problematic request.
See here for more details:
More information about the nginx