Install WordPress MU on Directadmin Server with Multiple Domains.

WordPress MU ( WordPress Multi-User, WPMU )

This tutorial note down that how I install the WordPress MU on Directadmin Server with Multiple Domains. I will put more print screen as much as possible for this tutorial.

Wordpress MU ( WordPress Multi-User, WPMU ) is built in into WordPress after version 3.0. So you no need to do separate download to install if you’ve installed the old version like before.

WARNING: This tutorial is installing from and empty sites, please do not try this on working sites, if you want to try, please backup before change anything. I  will not be responsible or liable, directly or indirectly, for any damage or loss caused or alleged to be caused by or in connection with use of or reliance on any such content, goods or services available on or through any such site or resource.


  • Linux Server
  • Administrator (Root) Access to the server
  • Dedicated IP Address
  • DirectAdmin
  • Few domains name

Installing WordPress on the primary server

Set Wildcard for Primary Domain

This will make the name server accept all incoming subdomains for the primary domain.

Adding ServerAlias * to httpd.conf
and add A * to name server.

After setup this, you need to edit the wp-config.php file in home directory in the WordPress.
Open up wp-config.php and add this line above where it says /* That’s all, stop editing! Happy blogging. */:

Login your WordPress from the admin page /wp-admin/

Disable all your Plugin before run the Create A Network.

Create the network.

You have to modify the .htaccess and the wp-config.php again, make sure you do backup for the files before changing of them.

After that you can re-login to your WordPress and access to My Sites on top right of the menu.

Before you map in any domain, you have to change the vhost in DirectAdmin, make sure all those domain are pointing to your IP, and your IP’s DocumentRoot is your primary domain. Mean, when it will point to

So I’ve modify the file in

Any domain that you added to the DirectAdmin account, you must delete them before continue.

Then you can Park your domain to DirectAdmin by using this tutorial.

After that you can install the WordPress MU Domain Mapping.
and add your new sites.

Happy WordPress MU ! If you do not understand, please ask in here and I will update in this post.
Thank you.

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