apache 2.2.8, mod_fcgid 2.2 and php-cgi 5.2.6 processes die

70mas · 03-15-2008, 02:28 PM

Hello

I have a problem with apache 2.2.8, mod_fcgid 2.2 and php-cgi 5.2.6.

The php-cgi processes which should be preforked just die and are not able to produce output.
I get 503 Service Temporarily Unavailable error and error_log says:

Code:

[Sat Mar 15 20:31:48 2008] [notice] mod_fcgid: call /var/www/localhost/htdocs/mysql/index.php with wrapper /var/www/localhost/cgi-bin/php5
[Sat Mar 15 20:31:49 2008] [notice] mod_fcgid: call /var/www/localhost/htdocs/mysql/index.php with wrapper /var/www/localhost/cgi-bin/php5
[Sat Mar 15 20:31:49 2008] [notice] mod_fcgid: process /var/www/localhost/htdocs/mysql/index.php(6100) exit(server exited), terminated by calling exit(), return code: 255
[Sat Mar 15 20:31:49 2008] [notice] mod_fcgid: process /var/www/localhost/htdocs/mysql/index.php(6097) exit(server exited), terminated by calling exit(), return code: 255

I have tested the wrapper from command line and works.

/var/www/localhost/cgi-bin/php5 -v says:

Code:

PHP 5.2.6RC1-pl1-gentoo with Suhosin-Patch 0.9.6.2 (cgi-fcgi) (built: Mar 14 2008 20:59:48)
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies
    with Suhosin v0.9.23, Copyright (c) 2007, by SektionEins GmbH

so the fcgi support is available.

The apache runs in prefork mpm, the modules mod_fcgid and mod_suexec are loaded and the configuration of the vhost is:

Code:

<VirtualHost *:80>
    ServerAlias some.site.com
    ServerAdmin admin@some.site.com
    DocumentRoot /var/www/some.site.com/htdocs
    
    # PHP SUEXEC
    SuexecUserGroup #3000 #3000
    <Directory /var/www/some.site.com/htdocs>
        AddHandler fcgid-script .php .phtml .php5 .php4
        FCGIWrapper /var/www/localhost/cgi-bin/php5 .php
        FCGIWrapper /var/www/localhost/cgi-bin/php5 .phtml
        FCGIWrapper /var/www/localhost/cgi-bin/php5 .php5
        FCGIWrapper /var/www/localhost/cgi-bin/php4 .php4
        Options ExecCGI
    </Directory>
    DefaultMaxClassProcessCount 1
    DefaultMinClassProcessCount 1
</VirtualHost>

I have been battling with this for a day and still cant find the solution. Googling doesnt find anything relevant. Your help would be very appreciated.

Thank you.

jarfil · 03-16-2008, 05:42 PM

You may want to double check you SuexecUserGroup settings.

I've just got a very similar (same?) problem due to a bug in a vhost .conf generating script; the only indication for a missing SuexecUserGroup line was the somewhat cryptic "return code: 255" in error_log, and a lack of matching entries in suexec_log.

70mas · 03-17-2008, 01:11 AM

Hi,

I have come to a solution.

I am running apache server as a non-standard user:group hosting:hosting (the default is apache:apache).
I have checked the /usr/sbin/suexec binary which had owner root:apache. The suexec binary could not even execute, so it wasn't able to make logs. So I had to:

Code:

chown root:hosting /usr/sbin/suexec

After the chown the binary lose the required setuid bit so I also had to:

Code:

chmod +s /usr/sbin/suexec

After that it worked. I have came to this solution through a very painful process trying literally everything. It is the hardest to find a solution when there are no logs.

I hope it helps you

Regards,
Tomas