nginx in proxy mode, timeouts

[Maxim Dounin]

Hello!

On Mon, Aug 17, 2009 at 12:58:03PM +0200, Juergen Gotteswinter wrote:

> Hello,
>
> someone could give me a hint what this error messages should mean? e.g.  
> if its something nginx related, client related or backend...
>
>
> 2009/08/17 12:22:48 [error] 22557#0: *1683003 upstream timed out (110:  
> Connection timed out) while reading upstream, client: 82.207.xxxxxx,  
> server: xxx.de, request: "POST /index.php?content= HTTP/1.1", upstream:  
> http://192.168.xxxxx:80/index.php?content=", host: "www.xxxx", referrer:  
> https://www.xxxxde/index.php?content="

It means that nginx wasn't able to read response in time from the 
upstream server in question.  Usually it means that backend isn't 
fast enough or overloaded, but depending on usage pattern this may 
also mean that specified timeout values are too low.

For more information see:

http://wiki.nginx.org/NginxHttpProxyModule#proxy_read_timeout

Maxim Dounin