The CentOS Atomic Host is shipped without the kubernetes-master package built into the image. Instead, you need to run the master kubernetes components (apiserver, scheduler, and controller-manager) in containers, managed via systemd, using the service files. Do you have any good tutorials on how to form a kubernetes cluster of atomic hosts? the tutorials and the documentations I have seen so far was done on fedora atomic and centOS 7.
You can try Kubernetes the Hard Way on Github:
You should be able to get a Kubernetes cluster working using the old contrib/ansible playbooks. While somewhat outdated, they've been tested to work. At this point the Atomic team is working towards enabling kubeadm-based installs.