I recently wrote about getting up and running with kubeadm and Fedora CoreOS, which I got working, but which sent me into a miniature funk of uncertainly over various little integration issues. First, I was getting around the lack of support in rpm-ostree for rpms that place stuff in /opt, which isn’t a traditional place for package managers to put stuff, but which is where kubeadm puts its cni binaries, for historical reasons. I got the Fedora package that provides the…