How to bind a second-level domain name to a second-level directory in Centos

　For some directories, we often need to specify a second-level domain name for them, so how to do it? Next, I will explain it with my own practice.

　　Due to the first contact with centos, I had to resort to network resources. Then I learned that the mod_rewrite module needs to be enabled. The specific method is as follows:

　　Open the Apache installation directory /etc/httpd/conf\httpd.conf with a text editor, find the line "#LoadModule rewrite_module modules/mod_rewrite.so", and remove the "#LoadModule rewrite_module modules/mod_rewrite.so" #"; Continue to find "AllowOverride None", modify it to "AllowOverride All", and then restart Apache.

　　In this way, the mod_rewrite module is opened, and its function is very powerful. Here I only talk about how to bind the second-level domain name.

　　Similarly, we enter the following statement at the end of the httpd.conf file:

　　RewriteEngine on

　　RewriteMap lowercase int:tolower

　　RewriteMap vhost txt:/etc/httpd/vhost.map

　　RewriteCond ${lowercase:%{SERVER_NAME}} ^(.+)$

　　RewriteCond $ {vhost:%1} ^(/.*)$

　　RewriteRule ^/(.*)$ %1/$1

　　Then restart Apache

　　. In this way, we can freely set and bind the second-level domain name.

　　Reminder: Please back up this httpd.conf, I accidentally deleted it, and it was extremely miserable!!

　　After that, create a new vhost.map under /etc/httpd (ie, the Apache installation directory), and use a text editor to bind it. It is extremely simple. I wrote it like this:

　　bbs.nvdchina.com /var/www/html/bbs

　　home.nvdchina.com /var/www/html/home

　　potplayer.nvdchina.com /var/www/html/potplayer

　　We can bind the second-level domain name to the directory at will, save it, and do not need to restart Apache, which is very convenient.