How to create SubDomains by editing httpd.conf

VirtualHost:
If you want to maintain multiple domains/hostnames on your
machine you can setup VirtualHost containers for them.

Types of Virtual Hosting
1) IP-Based Virtual Hosting
2) Name-Based Virtual Hosting
3) Dynamic Virtual Hosting

Good Example how to set subDomains under NameBased Virtual Hosting :

NOTE: NameVirtualHost cannot be used without a port specifier
(e.g. :80) if mod_ssl is being used, due to the nature of the
SSL protocol.

Change Apache's httpd.conf file

NameVirtualHost 215.51.182.53


ServerName *.yourdomain.com
ServerAlias yourdomain.com
DocumentRoot /home/rootdir #Directory where Scritpting files are located.
ErrorLog logs/error_log #Error are recorded in error_log file located /var/logs/httpd
CustomLog logs/visit_log combined # URL visit information recorded in visit_log file located /var/logs/httpd



ServerName subdomain.youydomain.com
ServerAlias subdomain.youydomain.com
DocumentRoot /home/rootdir/subdomain
ErrorLog logs/error_log
CustomLog logs/visit_log



ServerName subdomain1.youydomain.com
ServerAlias subdomain1.youydomain.com
DocumentRoot /home/rootdir/subdomain
ErrorLog logs/error_log
CustomLog logs/visit_log


NOTE :
You can create n number of SubDoamins on one IP address