suexec/fcgid problem - error 500

[GioMac]

Code:

==> error_log <==
[Mon Mar 29 00:40:10 2010] [notice] mod_fcgid: call /var/www/virtual/test.ge/htdocs/some.php with wrapper /var/www/fcgi/test.ge/php5-fcgi-starter
[Mon Mar 29 00:40:10 2010] [info] mod_fcgid: server test.ge:/var/www/virtual/test.ge/htdocs/some.php(31752) started

==> test.ge-combined.log <==
77.92.229.53 - - [29/Mar/2010:00:40:10 +0400] "GET /errors/inc/errordocs.css HTTP/1.1" 304 - "http://test.ge/some.php" "ELinks/0.12pre5 (textmode; Linux; 191x48-2)"

==> users/test.ge-access.log <==
77.92.229.53 - - [29/Mar/2010:00:40:10 +0400] "GET /errors/inc/errordocs.css HTTP/1.1" 304 - "http://test.ge/some.php" "ELinks/0.12pre5 (textmode; Linux; 191x48-2)"

==> error_log <==
[Mon Mar 29 00:40:10 2010] [warn] [client 77.92.229.53] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[Mon Mar 29 00:40:10 2010] [error] [client 77.92.229.53] Premature end of script headers: some.php

==> test.ge-combined.log <==
77.92.229.53 - - [29/Mar/2010:00:40:10 +0400] "GET /some.php HTTP/1.1" 500 780 "-" "ELinks/0.12pre5 (textmode; Linux; 191x48-2)"

==> users/test.ge-access.log <==
77.92.229.53 - - [29/Mar/2010:00:40:10 +0400] "GET /some.php HTTP/1.1" 500 780 "-" "ELinks/0.12pre5 (textmode; Linux; 191x48-2)"

==> test.ge-traf.log <==
780

==> error_log <==
[Mon Mar 29 00:40:13 2010] [notice] mod_fcgid: process /var/www/virtual/test.ge/htdocs/some.php(31752) exit(communication error), terminated by calling exit(), return code: 255

---

who can help with taking traces anyway?

one solution (thanks to malte):
change /bin/false to /bin/sh for user
cd to working dir
export variables specified in fcgid wrapper
strace -e open ./fcgid-wrapper

if ok - seems like problem is in running script as that user, in my case script was run by suexec, so, we've checked it and found that group doesn't match apache's one:

found it - was my fault:

Code:

# rpm -V httpd
S.5....T.  c /etc/httpd/conf.d/proxy_ajp.conf
S.5....T.  c /etc/httpd/conf/httpd.conf
S.5....T.  c /etc/sysconfig/httpd
.......T.    /usr/sbin/apachectl
......G..    /usr/sbin/suexec
......G..    /var/cache/mod_proxy
......G..    /var/lib/dav
......G..    /var/run/httpd