Is it possible to change lemmy’s domain after I have already started it once and produced some content? I am thinking of moving to a subdomain but I’m not sure if it will go smoothly
It’s possible by having the webfinger endpoints at the “root” while keeping the rest of Lemmy on a subdomain. The main thing that determines the domain in your username is webfinger.
No clue if Lemmy or kbin support this config though, but quite a bit of the microblog-only parts of fedi do, and it’s a widely used thing.