He look. It's 2026. I ain't got time for BS, I need a slim linux with no frills and pure minimalism, my workloads are what matters. I slap my containers on there and boom, fully automated homelab. The dream, just like how the pros do it.
Linux CoreOS-style is a really great because they're minimal. For me they hold a special place as my first modern Linux after my Ubuntu years. The problem with them is that you have to use this thing called the ignition which is really technical and complicated config file thing that only makes sense for people who like Kubernetes. And even still we hate it. But it's awesome, just not for people.
Sometimes you just want something like the Ubuntu server installer, but you want the benefits of having Flatcar Linux. So what's really nice about this is you get a stable thing that's rolling in the background. It's fully automated and minimal. Everything you love about Flatcar Linux, because it's Flatcar Linux.
I think it would have been foolish of me to try to make a Flatcar installer. I don't want a vibcoded installer. So instead I concentrated on making a UX for ignition itself and then feed that valid file into the the existing Flatcar installer. Just making a UX for ignition and reusing all of the other Flatcar stuff. It's just a config generator.
I like to thank GitHub for donating Copilot to CNCF maintainers, which allowed me to make this. Those OSS and Ops folks have been busting their asses for open source and are going through some challenges and you just gotta give it up to people who have fought hard to give us the tools to make cool shit. Let's cut them some slack and celebrate one. Here's some evidence.
castrojo
I have a home OS in a vendor neutral organization in the CNCF. And as a CNCF Staffer I was there to help them do it. And they went through the open processes. And they were critiqued, not by random redditors but by the cloud native community. This includes some of their fiercest competitors. And Flatcar made the cut. And I wanted to make Knuckle as a return gift for the Copilot. This OS is perfect for building test frameworks for agents. I have agents running Bluefin image tests right now - we make this a normal pattern and that would help testing in SO many open source projects!
But that's just what we'll say so they'll leave us alone. For homelabs it can be anything from small board projects to your full NAS buildout. Or just your home server, slap some linuxserver.io goodies and live the good life. The long walk.
Knuckle is fast moving, and mostly working, help and advice sought.
Flatcar Linux is the server version of what Project Bluefin strives to be. There are plenty of things to criticize Microsoft for lately, but they nailed it with their Linux teams.