Bad Gateway 502 (socket problem)

Submitted by conrad on Sun, 05/19/2013 - 13:35

After a clean install on a ubuntu 12.04 the Virtualmin + Nginx runs ok, but as soon as i make an change on een users virtual server, eg add phpmyadmin, or add script roundcube the website is down: ban gateway 502

As far i can see there is no socket in /var/php-nginx

in logfile: PHP Warning: Module 'mcrypt' already loaded in Unknown on line 0 Cannot bind/listen socket - [2] No such file or directory. Couldn't create FastCGI listen socket on port /var/php-nginx/13689748061364.sock/socket

starting the php for the user does not change anything.

When i create a new virtual server, php for that server is ok, but as soon i make a change, php does not start anymore.

I was thinking about trying the Pro, but there is no demo, down for weeks i think, and i do not know if things are working in Pro

anyone ?

Status: 
Active

Comments

Submitted by JamieCameron on Mon, 05/20/2013 - 21:34

We've had to shut down the demo temporarily as someone was abusing it to send spam :-( It wouldn't help you much in this case though, as it runs Apache and not Nginx.

Regarding your Nginx problem, it sounds like the php-cgi processes for the domain are exiting. If you run ps auxwww | grep XXX where XXX is the domain's username, what processes does it show?

Submitted by conrad on Tue, 05/21/2013 - 01:04

Hi Jaimie,

ps aux shown only:

root 14512 0.0 0.1 9384 884 pts/0 S+ 05:56 0:00 grep --color=auto voorbeeld

but that makes sense :)

when i create a new virtual host (virtual domain) is does show the fcgo process but as soon as i eg add phpmyadmin or any thing else to the virtual domain throught virtualmin, things gets messed up i guess and the process is gone. Cannot start it up either.

root@d2:~# ls -l /var/php-nginx/ total 8 -rw-rw-r-- 1 test test 6 May 19 17:39 136891176415813.php.pid -rw-r--r-- 1 voorbeeld voorbeeld 6 May 19 17:39 13689748061364.php.pid

but no socket ...

gr. Conrad Maayen

Submitted by conrad on Tue, 05/21/2013 - 01:08

in webmin:

php-fcgi-test-nl Start Nginx PHP fcgi server for test.nl Yes Unknown php-fcgi-voorbeeld-nl Start Nginx PHP fcgi server for voorbeeld.nl Yes Unknown

Submitted by JamieCameron on Tue, 05/21/2013 - 17:55

Do you ever seen the process php-loop.pl running as the domain user? That is what is supposed to restart crashed PHP processes.

Submitted by conrad on Wed, 05/22/2013 - 01:40

ps aux | grep php root 6515 0.0 0.1 9384 884 pts/0 S+ 06:27 0:00 grep --color=auto php test 6711 0.0 0.3 23232 1940 ? S May19 0:17 /usr/bin/perl /usr/bin/php-loop.pl /usr/bin/php5-cgi -b /var/php-nginx/136891176415813.sock/socket test 16249 0.0 0.4 26092 2028 ? S May19 0:14 /usr/bin/perl /usr/bin/php-loop.pl /usr/bin/php5-cgi -b /var/php-nginx/136891176415813.sock/socket 1001 16262 0.0 0.4 26092 2032 ? S May19 0:15 /usr/bin/perl /usr/bin/php-loop.pl /usr/bin/php5-cgi -b /var/php-nginx/13689748061364.sock/socket

btw /var/php-nginx = 777

Other thing: Like virtualmin and i was thinking about using virtualmin as a replacement for my current panels, but i'm worried about the paid support which comes with the license. When there is a bug or problem with virtualmin, how fast am i getting support..... and there is the timezone issue....

Submitted by JamieCameron on Wed, 05/22/2013 - 16:09

Ok, that ps output looks good. I'm mystified as to why the php processes would be exiting and not beign re-started.

Would it be possible for us to login to your system and see what is going wrong? Email me directly at jcameron@virtualmin.com if so.

Submitted by conrad on Wed, 05/22/2013 - 16:37

Thanks Jamie,

just emailed you.

Submitted by JamieCameron on Wed, 05/22/2013 - 17:09

Ok, the cause was missing domain directories under the /var/php-nginx directory. I'm not sure how this happened though, as creating a new domain does create the required directory OK.

Submitted by rpereyra on Fri, 12/06/2013 - 07:25

Hi Jamie

This issue happen again with the latest virtualmin/nginx debian install.

I had to manually create the domain directory in /var/nginx-php

Best regards.

roberto

Submitted by JamieCameron on Fri, 12/06/2013 - 17:23

roberto - was this a fresh install on a new system?

Submitted by rpereyra on Fri, 12/06/2013 - 17:28

Hi Jamie

Yes was a fresh install in a Debian 7 server.

I've create the directory:

/var/php-nginx/13862832108705

manually and it was fixed.

roberto

Submitted by JamieCameron on Sat, 12/07/2013 - 13:24

Ok, it looks like we haven't actually released the fixed Nginx plugin yet.

Submitted by rpereyra on Sat, 12/07/2013 - 15:03

Ok, Jamie. I can test it when you release the new fixed version.

roberto

Submitted by kfawcett on Tue, 02/04/2014 - 21:56 Pro Licensee

I just added php my admin to a site and experienced this same issue. I recreated the .sock directory for the site to correct it.