Apache umí virtuální hosty jmenné nebo definované přímo pomocí ip adresy.

Abychom mohli mít pro každou virtuální doménu svůj konfigurační soubor, je třeba nadefinovat default hosta, na kterém další virtuální hosti budou. U default hosta budou jako u jediného klausule NameVirtualHost. U virtuálních hostů už toto nebude:

cat /etc/apache2/sites-available/default

NameVirtualHost *:80
<VirtualHost *:80>
        ServerName example.com
        ServerAdmin webmaster@example.com
        DocumentRoot /var/www/

        <Directory />
                Options FollowSymLinks
                AllowOverride None
        </Directory>
        <Directory /var/www/>
                Options FollowSymLinks MultiViews
                AllowOverride None
                Order allow,deny
                allow from all
        </Directory>

        ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
        <Directory "/usr/lib/cgi-bin">
                AllowOverride None
                Options ExecCGI -MultiViews +SymLinksIfOwnerMatch
                Order allow,deny
                Allow from all
        </Directory>

        ErrorLog /var/log/apache2/error.log
        LogLevel warn
        CustomLog /var/log/apache2/access.log combined
        ServerSignature On
</VirtualHost>

Zde máme příklad prvního virtálního hosta

cat /etc/apache2/sites-available/01vhost <VirtualHost *:80>

  ServerAdmin 01vhost@example.com
  DocumentRoot /home/kviti/www
  ServerName 01vhost.example.com
  ErrorLog /var/log/apache2/01vhost-error.log
  CustomLog /var/log/apache2/01vhost-access.log common

</VirtualHost>

Převzato z http://www.debianhelp.co.uk/virtualhosts.htm

 Example for name based virtual host in debian:-

Apache 2.0, the default site is instead the first file (in alphabetical order) in the /etc/apache2/sites-enabled directory. After initial installation, there will be a symlink from 000-default in this directory to /etc/apache2/sites-available/default. As you can see from this, Apache 2.0 offers another level of abstraction in the Virtual Hosts by recommending putting the actual files in /etc/apache2/sites-available and then symlinking from there to /etc/apache2/sites-enabled. I would recommend following this convention, but it's not mandatory. In our example above, we would create two files, /etc/apache2/sites-available/default and /etc/apache2/sites-available/example.com. Our /etc/apache2/sites-available/default file would look like this:

NameVirtualHost *
<VirtualHost *>
ServerName incorrect.com
DocumentRoot /home/www/html/default
</VirtualHost>

And our /etc/apache2/sites-available/example.com would look like this:

<VirtualHost *>
ServerName www.example.com
ServerAlias example.com
DocumentRoot /home/www/html/example.com/html
CustomLog logs/www.example.com-access_log common
</VirtualHost>

We would then create symlinks to the /etc/apache2/sites-enabled directory with the ln -s

command: ln -s /etc/apache2/sites-available/example.com /etc/apache2/sites-enabled/example.com.

Now we have our Virtual Hosts configured, it's time to test. To start Apache 2, type /etc/init.d/apache2 start and fire up a browser and head to www.example.com

Example for IP based virtual host in debian:-

 /etc/apache2/sites-available/example.com would look like this:

<VirtualHost 192.168.1.20>
ServerName www.example.com
ServerAlias example.com
DocumentRoot /home/www/html/example.com/html
CustomLog logs/www.example.com-access_log common
</VirtualHost>

We would then create symlinks to the /etc/apache2/sites-enabled directory with the ln -s

command: ln -s /etc/apache2/sites-available/example.com /etc/apache2/sites-enabled/example.com.

Now we have our Virtual Hosts configured, it's time to test. To start Apache 2, type /etc/init.d/apache2 restart and fire up a browser and head to www.example.com