Introduction to the simplest and fastest way to implement Apache two-level domain names

First, you have a top-level domain name that has a universal domain name resolution, such as: domain.com

Second, open the mod_rewrite in the httpd.conf.

After that, at the end of httpd.conf, add the following:

RewriteEngine on
RewriteMap lowercase int:tolower
RewriteMap vhost txt:/usr/local/etc/apache/vhost.map
RewriteCond ${lowercase:%{SERVER_NAME}} ^(.+)$
RewriteCond ${vhost:%1} ^(/.*)$
RewriteRule ^/(.*)$ %1/$1

The/usr/local/etc/apache is the path to your Apache server configuration file, which is changed according to the actual situation.

Then, create a file in the directory that contains the path: Vhost.map

Content is:

www.domain.com /usr/local/www/data-dist/domain
bbs.domain.com /usr/local/www/data-dist/bbs
anyname.domain.com /usr/local/www/data-dist/anyname

The above parts are: "Domain name + space + absolute path" form.

Finally, under your site root directory/usr/local/www/data-dist, create the corresponding directory:

Domain, BBS, anyname and so on, theoretically can be unlimited.

In this way, through the browser, access to www.domain.com, the actual access is the/usr/local/www/data-dist/domain directory of files. Similarly, the access bbs.domain.com actually accesses the files in the/usr/local/www/data-dist/bbs directory. And, you can

Change Vhost.map at any time to add, remove, and modify your level two domain name and the actual path you point to, without restarting Apache.