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.