You can do rollbacks if you’re using something like home-manager on a foreign distribution. It’s just a bit more janky admittedly.

Yeah. There’s reasoning for why they do it on their docs, but the reasoning iirc is kanidm is a security critical resource, and it aims to not even allow any kind of insecure configuration. Even on the local network. All traffic to and from kanidm should be encrypted with TLS. I think they let you use self signed certs though?

Kanidm wants to directly have access to the letsencrypt cert. It refuses to even serve over HTTP, or put any traffic over it since that could allow potentially bad configurations. It has a really stringent policy surrounding how opinionated it is about security.