I have a wordpress multisite. I’m using a single domain, but I want to use multiples domains. I want to allow the user choose a domain for his subdomain.
I was searching, but i don’t found nothing about this… only a domain mapping plugin and is for singles sites.
One way to do it is to use the Networks for WordPress plugin: https://wordpress.org/extend/plugins/networks-for-wordpress/
It will create a sub-network for each of your domains. So basically you’d have a network of networks of sites. Each sub-network will be using the same install of WordPress, but will be managed separately with it’s own sites under it. Like so:
mainsite.com
site2.com
blog1.site2.com
blog2.site2.com
site3.com
blog1.site3.com
blog2.site3.com
(mainsite.com could also have it’s own blogs under it)