Apache Installation And Configuration Under Centos/Redhat/Fedora

Service Used   :     httpd (Hyper Text Transfer Protocol Daemon)
Port used                :     80
Document Root       :     /var/www/html
Configuration File :     /etc/httpd/conf/httpd.conf

Installation 

#  yum install gcc
#  yum install openssl-devel
#  yum install httpd httpd-devel httpd-tools
#  service httpd start

Enable httpd service to start automatically during system startup using chkconfig

#  chkconfig httpd on

To Upgrade Apache

#  yum check-update httpd

Upgrade Apache to latest version

#  yum update httpd

Configuration

#  vi /etc/httpd/conf/httpd.conf

     Listen: 192.168.0.3:80    (search for the strings and modify)
     ServerName: 192.168.0.3:80
     :wq!

#  httpd -­t
#  service httpd restart

Virtual Server
#  Entries same as main server

#  vi /etc/httpd/conf/httpd.conf

     NameVirtualHost 192.168.0.3:80
        <VirtualHost station3.example.com:80>
          ServerAdmin webmaster@station3.example.com     // admin's email id
          DocumentRoot /var/www/html/station3                  // path of index.html
           ServerName station3.example.com                        // server name
          ErrorLog logs/station3­error_log                            // error log file
         CustomLog logs/station3­access_log common       // common log file
       </VirtualHost>

( For more virtual hosts add similar entries )

#  service httpd restart

(For proper working of web server the DNS should be properly working, because dns is
resolving the host names entered in the web browser. The first page (home page) of all web
servers should have the name index.html. To create virtual host entries you can copy and modify
the example given in the configuration file.)