New CentOS Atomic Host with Updated Docker

  • by Shin.S
  • Jul 28, 2017
  • 0
  • Category:

An updated version of CentOS Atomic Host (version 7.20170209), is now available, including significant updates to docker (version 1.12.5).

Atomic Host is a 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.

CentOS Atomic Host is available as a VirtualBox  or as an installable ISO, qcow2 or Amazon Machine image. These images are available for download at cloud.centos.org.

CentOS Atomic Host includes next core component versions:

  • atomic-1.14.1-5.el7.x86_64
  • cloud-init-0.7.5-10.el7.centos.1.x86_64
  • docker-1.12.5-14.el7.centos.x86_64
  • etcd-3.0.15-1.el7.x86_64
  • flannel-0.5.5-2.el7.x86_64
  • kernel-3.10.0-514.6.1.el7.x86_64
  • kubernetes-node-1.4.0-0.1.git87d9d8d.el7.x86_64
  • ostree-2016.15-1.atomic.el7.x86_64
  • rpm-ostree-client-2016.13-1.atomic.el7.x86_64

Containerized kubernetes-master

The downstream release of CentOS Atomic Host ships without the kubernetes-master package built into the image. Instead, you can run the master kubernetes components (api-server, scheduler, and controller-manager) in containers, managed via systemd, using the service files and instructions on the CentOS wiki. The containers referenced in these systemd service files are built in and hosted from the CentOS Community Container Pipeline, based on Dockerfiles from
the CentOS-Dockerfiles repository.

These containers have been tested with the kubernetes ansible scripts provided in the upstream contrib repository, and they work as expected, provided you first copy the service files onto your master.

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