I've just reinstalled my server's OS (Ubuntu 10.04 LTS) and installed Virtualmin using the install script (install.sh). Everything on the server is completely vanilla - the only thing I've done after logging into the clean system is to run install.sh and enable the userdir Apache module.
I've created a virtual host and logged into its account using SFTP, then created a php file with phpinfo() in it. When I browse to the file I get a 500 Internal Server Error. Virtualmin's default settings use fcgid for executing PHP.
Apache's error.log shows this:
[Fri Jan 27 10:20:46 2012] [notice] mod_fcgid: call /home/username/public_html/info.php with wrapper /home/username/fcgi-bin/php5.fcgi suexec policy violation: see suexec log for more details [Fri Jan 27 10:20:52 2012] [notice] mod_fcgid: process /home/username/public_html/info.php(28890) exit(communication error), terminated by calling exit(), return code: 112
and suexec.log has this:
[2012-01-27 10:20:46]: uid: (1000/username) gid: (1000/username) cmd: php5.fcgi [2012-01-27 10:20:46]: cannot get docroot information (/home/username)
and the virtual host's error_log has this:
[Fri Jan 27 11:07:02 2012] [warn] [client 220.127.116.11] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server [Fri Jan 27 11:07:02 2012] [error] [client 18.104.22.168] Premature end of script headers: info.php
Obviously the problem is with suexec, but I've been playing about with this server for a few days trying to get the config right (and having little success) and this time I'm going to seek help before I touch anything and potentially make it worse :)
Any help would be really appreciated :)