Set Up Apache Virtual Hosts

Enable the new VirtualHost using the a2ensite utility and restart Apache2:

sudo a2ensite mynewsite
sudo /etc/init.d/apache2 restart

Similarly, use the a2dissite utility to disable sites. This is can be useful when troubleshooting configuration problems with multiple VirtualHosts:

sudo a2dissite mynewsite
sudo /etc/init.d/apache2 restart