# 502 Bad Gateway **URL:** \ **Category:** NGINX\ **Created:** [March 26, 2012, 1:41pm UTC](https://www.ruby-forum.com/t/502-bad-gateway/218255 "2012-03-26T13:41:58Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Post date:** [March 26, 2012, 1:41pm UTC](https://www.ruby-forum.com/t/502-bad-gateway/218255/1 "2012-03-26T13:41:58Z")
Hi all, I have a simple setup with Nginx in front Apache, under debian wheezy (nginx for static content, apache for php) Since the last Nginx update (1.1.17-2 via apt-get), every night after daily crons i have a 502 error (bad gateway) until i reload apache. Everything was fine before. I tried to reload apache after nginx in the logrotate daily task, but without effect. In my logs i just have : [error] 22332#0: \*10804 connect() failed (111: Connection refused) while connecting to upstream Where should i look at? Thanks! ---
**Author:** ![Raphael\_Marot](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/9de053/32.png) [@Raphael\_Marot](https://www.ruby-forum.com/u/Raphael_Marot)\ **Post date:** [March 26, 2012, 1:43pm UTC](https://www.ruby-forum.com/t/502-bad-gateway/218255/2 "2012-03-26T13:43:13Z")
PHP is a common cause of such an error ---
**Author:** ![Raphael\_Marot](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/9de053/32.png) [@Raphael\_Marot](https://www.ruby-forum.com/u/Raphael_Marot)\ **Post date:** [March 26, 2012, 1:45pm UTC](https://www.ruby-forum.com/t/502-bad-gateway/218255/3 "2012-03-26T13:45:43Z")
Il 26/03/2012 13:41, Raphael Marot ha scritto: > [error] 22332#0: \*10804 connect() failed (111: Connection refused) > while connecting to upstream > > Where should i look at? Look at Apache’s logs. It seems that apache does not restart correctly after che log rotate, and a manual restart fix it. The error tells you that nginx can’t communicate with apache. ---
**Author:** ![Raphael\_Marot](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/9de053/32.png) [@Raphael\_Marot](https://www.ruby-forum.com/u/Raphael_Marot)\ **Post date:** [March 26, 2012, 2:01pm UTC](https://www.ruby-forum.com/t/502-bad-gateway/218255/4 "2012-03-26T14:01:54Z")
Le 26/03/2012 13:45, [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) a crit : > > In my logs i just have : > > * * * > > nginx mailing list > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [mailman.nginx.org archive](http://mailman.nginx.org/mailman/listinfo/nginx) Thanks! Indeed I have an error in my apache log. seg fault or similar nasty error detected in the parent process It is definitely php related and has nothing to do with Nginx. I think i uninstalled a php module which is still called in the php.ini, and maybe this is the cause… ---
**Author:** ![Raphael\_Marot](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/9de053/32.png) [@Raphael\_Marot](https://www.ruby-forum.com/u/Raphael_Marot)\ **Post date:** [May 18, 2012, 12:28pm UTC](https://www.ruby-forum.com/t/502-bad-gateway/218255/5 "2012-05-18T12:28:20Z")
Hello! On Thu, May 17, 2012 at 07:33:52PM -0400, SolarWonk wrote: > Any update on this? The problem was found to be in a backend, not in nginx (well, actually it was clear for the original error message referenced, and even from the subject). What update do you expect to see here? Maxim D. ---
**Author:** ![Raphael\_Marot](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/9de053/32.png) [@Raphael\_Marot](https://www.ruby-forum.com/u/Raphael_Marot)\ **Post date:** [May 18, 2012, 1:34am UTC](https://www.ruby-forum.com/t/502-bad-gateway/218255/6 "2012-05-18T01:34:28Z")
Any update on this? Posted at Nginx Forum: > **[Re: 502 Bad Gateway](https://forum.nginx.org/read.php?2,224403,226609#msg-226609)** > > Hi all, I have a simple setup with Nginx in front Apache, under debian wheezy (nginx for static content, apache for php) Since the last Nginx update (1.1.17-2 via apt-get), every night after daily crons i have a 502 error (bad gateway) until i reload...