LMS has been on my list of things to check out for a while, though looking at a few other suggestions, mopidy is looking like a strong choice - if I can get it set up both look at Jellyfin (starting a slow migration already…) and accept streams over DLNA, then it should cover a good portion of what I’d want.
Ditto with Caddy. Been using it for a couple of years now and it’s made life a lot simpler. Config format isn’t always obvious, but for most of the cases I’ve needed, a standard 3 line snippet gives you a reverse proxy with automatic working HTTPS with valid certificates.
Up until now I’ve been using docker and mostly manually configuring by dumping docker compose files in /opt/whatever and calling it a day. Portainer is running, but I mainly use it for monitoring and occasionally admin tasks. Yesterday though, I spun up machine number 3 and I’m strongly considering setting up something better for provisioning/config. After it’s all set up right, it’s never been a big problem, but there are a couple of bits of initial with that are a bit of a pain (mostly hooking up wireguard, which I use as a tunnel for remote admin and off-site reverse proxying.
Salt is probably the strongest contender for me, though that’s just because I’ve got a bit of experience with it.
I’ve got a mix of hosting environments personally. A dedicated box hosted with Hetzner (their auction prices can be pretty decent) plus a Pi 4 and an old NAS for internal services. Docker containers used for pretty much everything - mostly set up with a big ol’ /opt/ folder with a bunch of service specific folders with docker-compose.yml files and bind mounts galore. Got a wireguard VPN bridging between then because that seemed sensible.
Running Portainer for some extra management and monitoring, then a bundle of stuff:
Got a spare old i5 machine around set up to auto hook into Portainer if I need some extra grunt at some point, but it’s more likely to be used when I can’t be bothered paying for the dedicated box.
Aware a lot of it’s suboptimal, but it’s easy to work with and familiar, and that’s enough to make it workable.
Ditto with Mailcow - easy enough to set up, and has worked well enough for setting up multiple domains etc.
The protocol would seem unlikely to satisfy the concept of “necessary”. It’s entirely possible for the protocol to be impossible to implement whilst not complying with GDPR. Might require the development of something more sharded - data pulling in real time, etc.