Could someone please point me to the current documentation for this? I haven’t been able to find it.
Additional questions:
#1: If I want to have multiple ActivityPub networks with usernames on the TLD but hosted on subdomains, would this work?
Example: Can Peertube, Pixelfed, Mastodon etc be hosted on subdomains without having the subdomain in the respective username?
#2: Basically the same question for non ActivityPub networks.
Should it be possible to have networks like Matrix, Diaspora, Hubzilla etc hosted the same way next to Mastodon. (hosted on subdomain but with only TLD in the username?)
#3: Can these edits be done to an existing live Mastodon instance, or does this need to be done prior to launch?
Where subdomain.main-domain is the domain I use for mastodon.
I can’t tell you whether it’s supported to change this config after install, though…
I’m not sure how other decentralized services handle this as I don’t use any of the ones you mentioned. If they do use a mechanism for this and they don’t use the same one, then it should probably work but you’d need to consult those guides.