$ sudo a2ensite koha
$ sudo apache2ctl restart
+Note: you may still see the usual Apache default site if your VirtualHost
+configuration isn't correct. The command "sudo a2dissite default" may be a
+quick fix, but may have side-effects. See the Apache HTTPD manual section on
+virtual hosts for full instructions.
+
5. Configure and start Zebra
Note: it's recommended that you daemonize the Zebra process and add it to your