[CentOS-devel] New CentOS Atomic Host Available for Download

An updated version of CentOS Atomic Host (tree version 7.20161006), is
now available, featuring the option of substituting the host's default
docker 1.10 container engine with a more recent, docker 1.12-based
version, provided via the docker-latest package.

CentOS Atomic Host is 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.

CentOS Atomic Host is available as a VirtualBox or libvirt-formatted
Vagrant box, or as an installable ISO, qcow2 or Amazon Machine image.
These images are available for download at cloud.centos.org. The backing
ostree repo is published to mirror.centos.org.

For download links and more information, see the CentOS Atomic
Download page on the CentOS wiki:
https://wiki.centos.org/SpecialInterestGroup/Atomic/Download

CentOS Atomic Host includes these core component versions:

-   atomic-1.10.5-7.el7.x86_64
-   cloud-init-0.7.5-10.el7.centos.1.x86_64
-   docker-1.10.3-46.el7.centos.14.x86_64
-   etcd-2.3.7-4.el7.x86_64
-   flannel-0.5.3-9.el7.x86_64
-   kernel-3.10.0-327.36.1.el7.x86_64
-   kubernetes-1.2.0-0.13.gitec7364b.el7.x86_64
-   ostree-2016.7-2.atomic.el7.x86_64


docker-latest

You can switch to the alternate docker version by running:

# systemctl disable docker --now
# systemctl enable docker-latest --now
# sed -i '/DOCKERBINARY/s/^#//g' /etc/sysconfig/docker

Because both docker services share the /run/docker directory, you cannot
run both docker and docker-latest at the same time on the same system.


Upgrading

If you're running a previous version of CentOS Atomic Host, you can
upgrade to the current image by running the following command:

$ sudo atomic host upgrade


Images

Vagrant

CentOS-Atomic-Host-7-Vagrant-Libvirt.box (546 MB) and
CentOS-Atomic-Host-7-Vagrant-Virtualbox.box (558 MB) are Vagrant boxes
for Libvirt and Virtualbox providers.

The easiest way to consume these images is via the Atlas / Vagrant Cloud
setup (see https://atlas.hashicorp.com/centos/boxes/atomic-host). For
example, getting the VirtualBox instance up would involve running the
following two commands on a machine with vagrant installed:

$ vagrant init centos/atomic-host && vagrant up --provider virtualbox

ISO

The installer ISO (776 MB) can be used via regular install methods (PXE,
CD, USB image, etc.) and uses the Anaconda installer to deliver the
CentOS Atomic Host. This image allows users to control the install using
kickstarts and to define custom storage, networking and user accounts.
This is the recommended option for getting CentOS Atomic Host onto bare
metal machines, or for generating your own image sets for custom
environments.

QCOW2

The CentOS-Atomic-Host-7-GenericCloud.qcow2 (1.2 GB) image is suitable
for use in on-premise and local virtualized environments. We test this
on OpenStack, AWS and local Libvirt installs. If your virtualization
platform does not provide its own cloud-init metadata source, you can
create your own NoCloud iso image.

Amazon Machine Images

Region Image ID

ap-northeast-1 ami-494e9628
ap-northeast-2 ami-07bb6f69
ap-southeast-1 ami-60b51203
ap-southeast-2 ami-598cbf3a
eu-central-1   ami-6350af0c
eu-west-1      ami-8c2c6fff
sa-east-1      ami-5a51c336
us-east-1      ami-cfeca0d8
us-west-1      ami-71bef711
us-west-2      ami-f020f890

SHA Sums

3af63166dd86c0b719efb57b5b4cc0997b959caa6680d3f86ff710bc382a2bd6
CentOS-Atomic-Host-7.1609-GenericCloud.qcow2
4ab6c62710cf81ae1e632c428a915648e3573adddab9f9c5d6fed517dcf27553
CentOS-Atomic-Host-7.1609-GenericCloud.qcow2.gz
06549195aa626b82f9b7473a366a7f1b32932dff60e8d53be924b3b0c2635e00
CentOS-Atomic-Host-7.1609-GenericCloud.qcow2.xz
e26651dd1c3dde5b6dfee088876189fb29fb79f729e86fcd516fe87ccd992381
CentOS-Atomic-Host-7.1609-Installer.iso
037dad130293cf7476e9d711fec0d40d88f370f36dae66b80c8cce4ab5082fc2
CentOS-Atomic-Host-7.1609-Vagrant-Libvirt.box
1353920c87b0516c44072a184bbb8845c89ba1e538185a4dfc03076f65401dca
CentOS-Atomic-Host-7.1609-Vagrant-VirtualBox.box


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, based on
upstream work from Project Atomic. If you'd like to work on testing
images, help with packaging, documentation -- join us!

The SIG meets weekly on Thursdays at 16:00 UTC in the #centos-devel
channel, and you'll often find us in #atomic and/or #centos-devel if you
have questions. You can also join the atomic-devel mailing 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.