The CentOS Atomic SIG has released an updated version (https://wiki.centos.org/SpecialInterestGroup/Atomic/Download) of CentOS Atomic Host (7.1804), a lean operating system designed to run Linux containers, built from standard CentOS 7 RPMs, and tracking the component versions included in Red Hat Enterprise Linux Atomic Host.
This release, which is based on the RHEL 7.5 source code, now ships without any baked-in Kubernetes rpms, which makes it simpler for users to layer their preferred Kubernetes or OpenShift packages onto the host.
CentOS Atomic Host includes these core component versions:
atomic-1.22.1-3.git2fd0860.el7.x86_64 cloud-init-0.7.9-24.el7.centos.x86_64 docker-1.13.1-63.git94f4240.el7.centos.x86_64 etcd-3.2.18-1.el7.x86_64 flannel-0.7.1-3.el7.x86_64 kernel-3.10.0-862.2.3.el7.x86_64 ostree-2018.1-4.el7.x86_64 rpm-ostree-client-2018.1-1.atomic.el7.x86_64
Download CentOS Atomic Host
CentOS Atomic Host is available as a VirtualBox or libvirt-formatted Vagrant box, or as an installable ISO, qcow2 or Amazon Machine image. For links to media, see the CentOS wiki (https://wiki.centos.org/SpecialInterestGroup/Atomic/Download).
Upgrading
If you’re running a previous version of CentOS Atomic Host, you can upgrade to the current image by running the following command:
# atomic host upgrade
Release Cycle
The CentOS Atomic Host image follows the upstream Red Hat Enterprise Linux Atomic Host cadence. After sources are released, they’re rebuilt and included in new images. After the images are tested by the SIG and deemed ready, we announce them.
Getting Involved
CentOS Atomic Host is produced by the CentOS Atomic SIG (http://wiki.centos.org/SpecialInterestGroup/Atomic), based on upstream work from Project Atomic. If you’d like to work on testing images, help with packaging, documentation – join us!
You’ll often find us in #atomic and/or #centos-devel if you have questions. You can also join the atomic-develmailing list if you’d like to discuss the direction of Project Atomic, its components, or have other questions.
Getting Help
If you run into any problems with the images or components, feel free to ask on the centos-devel mailing list.
Have questions about using Atomic? See the atomic mailing list or find us in the #atomic channel on Freenode.