Last week, the CentOS Atomic SIG released an updated version
(https://wiki.centos.org/SpecialInterestGroup/Atomic/Download) of
CentOS Atomic Host (7.1707), a lean operating system designed to run
Docker containers, built from standard CentOS 7 RPMs, and tracking the
component versions included in Red Hat Enterprise Linux Atomic Host.

The release, which came as part of the monthly CentOS release stream,
was a modest one, including only a single glibc bugfix update
(https://lists.centos.org/pipermail/centos-announce/2017-July/022505.html).
The next Atomic Host release will be based on the RHEL 7.4 source code
(https://seven.centos.org/2017/08/centos-linux-7-1708-based-on-rhel-7-4-source-code/)
and will include support for overlayfs container storage, among other
enhancements.

Outside of the Atomic Host itself, the SIG has updated its Kubernetes
container images to be usable as system containers
(http://www.projectatomic.io/blog/2016/09/intro-to-system-containers/).
What's more, in addition to the Kubernetes 1.5.x-based containers that
derive from RHEL, the Atomic SIG is now producing packages and
containers that provide the current 1.7.x version of Kubernetes.

## Containerized Master

The downstream release of CentOS Atomic Host ships without the
kubernetes-master package built into the image. You can install the
master kubernetes components (apiserver, scheduler, and
controller-manager) as system containers, using the following
commands:

# atomic install --system --system-package=no --name kube-apiserver
registry.centos.org/centos/kubernetes-apiserver:latest

# atomic install --system --system-package=no --name kube-scheduler
registry.centos.org/centos/kubernetes-scheduler:latest

# atomic install --system --system-package=no --name
kube-controller-manager
registry.centos.org/centos/kubernetes-controller-manager:latest

## Kubernetes 1.7.x

The CentOS Virt SIG is now producing Kubernetes 1.7.x rpms, available
through this yum repo
(https://github.com/CentOS/CentOS-Dockerfiles/blob/master/kubernetes-sig/master/virt7-container-common-candidate.repo).
The Atomic SIG is maintaining system containers based on these rpms
that can be installed as as follows: