I've have followed all the steps to install Redmine on CentOS 5, except for the Apache part:

http://www.redmine.org/projects/redmine/wiki/HowTo_install_Redmine_on_CentOS_5

I do not want to configure a virtualhost as we are not using virtual hosts.

Can I configure Redmine to run with http://hostname/redmine?

Apparently it doesn't work for my case.

Redmine was extracted in to the webserver document root /var/www/html/ called /var/www/html/redmine

What I did was added a redmine.conf to /etc/httpd/conf.d/ with the following configuration and restarted the server:

<Location "/redmine">
    Options Indexes ExecCGI FollowSymLinks -MultiViews
    Order allow,deny
    Allow from all
    AllowOverride all

    PassengerEnabled On
    RailsBaseURI /var/www/html/redmine
    RailsEnv production
</Location>

now i got this error

Further information about the error may have been written to the application's log file. Please check it in order to analyse the problem.

Error message: No such file or directory - config/environment.rb Exception class: Errno::ENOENT Application root: /var/www/html

Where have I gone wrong?