Changing the primary domain in a WordPress multisite installation

When running a WordPress multisite network, you may need to change the primary domain—for example, after migrating to a new server or rebranding your site. On ruachost.com, this requires updating several database entries and the wp-config.php file.

Why Change the Primary Domain?

• Update your site after migration to a new server.
• Rebrand with a new domain name.
• Ensure consistency across all subsites in the network.

Steps to Change the Primary Domain

Step 1: Update the Database

1. Log in to cPanel (or your hosting control panel).

2. In the Databases section, click phpMyAdmin.

3. Select your WordPress database.

4. Update the following tables:

   • wpXX_blogs → Change the domain column to the new domain.
   • wpXX_options → Update siteurl and home values.
   • wpXX_site → Update the domain column.
   • wpXX_sitemeta → Update the siteurl meta_value.
   • For additional subsites (wpXX_2_options, wpXX_3_options, etc.), update siteurl and home values.

✅ The database is now configured to use the new primary domain.

Step 2: Update the wp-config.php File

1. On the server, open the wp-config.php file in a text editor.

2. Locate the line containing DOMAIN_CURRENT_SITE:

   define( 'DOMAIN_CURRENT_SITE', 'example.com' );

3. Replace example.com with your new primary domain.

4. Save changes to the file.

✅ Your WordPress multisite installation will now use the new domain.

Important Notes

• Always back up your database and files before making changes.
• Incorrect edits may break your multisite network.
• Test thoroughly to ensure subsites are accessible after the update.