if all you are building is a lightsout k8s/k3s cluster then maybe k3os is a good choice. However if you are trying to choose one OS to rule them all then k3os is not it. That the website boasts that “Doesn’t require a package manager” you have to ask… “for what?” Don’t get me wrong… if you’re trying to make the OS immutable like CoreOS then maybe this is not the right way.
It’s been a long day…. include a package manager or kill the project and make k3s easier and more reliable to install.