$ vim /etc/httpd/conf/httpd.conf

#
# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, in addition to the default. See also the <VirtualHost>
# directive.
#
# Change this to Listen on specific IP addresses as shown below to
# prevent Apache from glomming onto all bound IP addresses (0.0.0.0)
#
#Listen 12.34.56.78:80
Listen 80

...
#Listen 12.34.56.78:80
Listen 80
Listen 8080

### Section 3: Virtual Hosts
#
# VirtualHost: If you want to maintain multiple domains/hostnames on your
# machine you can setup VirtualHost containers for them. Most configurations
# use only name-based virtual hosts so the server doesn't need to worry about
# IP addresses. This is indicated by the asterisks in the directives below.
#
# Please see the documentation at
# <URL:http://httpd.apache.org/docs/2.2/vhosts/>
# for further details before you try to setup virtual hosts.
#
# You may use the command line option '-S' to verify your virtual host
# configuration.

#
# Use name-based virtual hosting.
#
 NameVirtualHost *:80
 NameVirtualHost *:8080

#
# VirtualHost example:
# Almost any Apache directive may go into a VirtualHost container.
# The first VirtualHost section is used for requests without a known
# server name.
#
<VirtualHost *:80>
# ServerAdmin webmaster@dummy-host.example.com
 DocumentRoot /var/www/webA
 ServerName webA
# ErrorLog logs/dummy-host.example.com-error_log
# CustomLog logs/dummy-host.example.com-access_log common
</VirtualHost>

<VirtualHost *:8080>
 DocumentRoot /var/www/webB
 ServerName webB
</VirtualHost>

<VirtualHost *:8080>
 DocumentRoot /var/www/webB
 ServerName webB
 <Directory "/var/www/webB">
  AllowOverride All
  php_value session.save_path "/var/lib/php/session_B"
 </Directory>
</VirtualHost>