20 Chapter 3. Configuration
These three tunables depend on each other, and the strip_host_tail tunable is only used
if host based virtual serving is enabled. Otherwise, it is ignored.
3.8.1. virtual_server
If the value is set to 0, virtual hosting is disabled:
http://www.example.com/a.html => $DOCROOT/a.html
If the value is set to 1, host-based virtual hosting is enabled:
http://www.some.site.com/a.html => $DOCROOT/some.site.com/a.html
Note
TUX strips off the www. prefix variants and transforms the hostname to lowercase.
If the value is set to 2, IP-based virtual hosting is enabled:
http://www.some.site.com/a.html => $DOCROOT/1.2.3.4/a.html
If the value is set to 3, a mixture of host-based and IP-based virtual hosting is enabled:
http://www.some.site.com/a.html => docroot/1.2.3.4/some.site.com/a.html
3.8.2. mass_hosting_hash
The mass_hosting_hash tunable modifies the hostname mapping to be more effective for a
large number of hosts.
If the value is set to 0, mass_hosting_hash is disabled.
If the value is set to 1:
http://www.some.site.com/a.html => docroot/s/some.site.com/a.html
If the value is set to 2:
http://www.some.site.com/a.html => docroot/s/so/some.site.com/a.html
If the value is set to 3:
http://www.some.site.com/a.html => docroot/s/so/som/some.site.com/a.html
3.8.3. string_host_tail
The strip_host_tail tunable strips off hostname components, starting at the end of the
hostname.
If the value is set to 0, this tunable is disabled.
If the value is set to 1:
