Losing POST data on vanilla Ubuntu/nginx/mongrel install

[Maxim Dounin]

Hello!

On Sat, Apr 04, 2009 at 03:55:31PM -0700, Aaron Starr wrote:

> Maxim Dounin,
> 
> Thanks for your response!
> 
> I have several G on the logs volume, so for that reason it's probably
> not a disk space issue.
> 
> Also, though, the log file thing seems to have been a red herring. I
> just went and tried the POST, again, having made no changes at all
> since last time, and it's not working, again. And the log files are
> small.
> 
> So, it seems that nginx randomly starts stripping POST data when
> proxying to mongrel. I can't be the first person who's seen something
> like this! I really don't think I've done anything unusual.
> 
> Can anyone think of a reason why POST data might be stripped when proxying?

First of all, try looking into error_log.  If it doesn't help - 
obtain debug log and post it here together with config.

Maxim Dounin
 

> 
> Thanks for any ideas!
> 
> Aaron
> 
> 
> 
> On Sat, Apr 4, 2009 at 7:38 AM, Maxim Dounin <mdounin at mdounin.ru> wrote:
> > Hello!
> >
> > On Sat, Apr 04, 2009 at 12:49:13AM -0700, Aaron Starr wrote:
> >
> >> Update on the missing POST data when proxying to mongrel:
> >>
> >> This seems crazy, but it seems to me that the problem is related to
> >> having very large, un-rotated nginx log files. I noticed that the
> >> files were getting too large, and removed them (and got logrotate set
> >> up), and now I get my POST data, again.
> >>
> >> If anyone could confirm or deny this apparently nonsensical
> >> explanation, that would be appreciated.
> >
> > Probably you have no space left for files in client_body_temp_path
> > - and as soon as you removed large old logs there are space and
> > everything is working again.
> >
> > Guess you have nothing in error_log due to the very same reason -
> > no space left on device.
> >
> > Maxim Dounin
> >
> >>
> >> Aaron
> >>
> >>
> >> On Fri, Apr 3, 2009 at 2:22 PM, Aaron Starr <astarr at wiredquote.com> wrote:
> >> > Hi, all. Sorry in advance for what is hopefully a simple question.
> >> >
> >> > I'm using nginx as a reverse-proxy for a few mongrel instances. Using
> >> > AJAX (XMLHttpRequest), I POST a small bit of JSON to the server. The
> >> > request is properly proxied to mongrel, but with the POST data
> >> > missing!
> >> >
> >> > [..]
> >>
> >
> >
>