Most installation documents of Trac show how to install to a directory in the main site's domain. For installation into a subdomain, the Trac data and CGI script should be installed into trac.domain.com/htdocs/trac/, with the following in the Apache config file:
<Directory /path/to/trac.domain.com/htdocs/trac/> AllowOverride None Options ExecCGI AddHandler cgi-script .cgi Order allow,deny Allow from all </Directory> <VirtualHost 1.2.3.4> ServerName trac.domain.com DocumentRoot /path/to/trac.domain.com/htdocs/ RewriteEngine On RewriteCond %{REQUEST_URI} !^/cgi-bin/ RewriteCond %{REQUEST_URI} !^/trac/ RewriteRule ^/(.*) /trac/trac.cgi/$1 [L] <Location /> SetEnv TRAC_ENV "/var/lib/trac/projname"> </Location> </VirtualHost>
