[atomic-devel] New CentOS Atomic Host Available

[Jason Brooks <jbrooks redhat com>]

An updated version of CentOS Atomic Host (version 7.20160203) is now 
available for download. 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 7.2.

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(http://cloud.centos.org/centos/7/atomic/images/). The 
backing ostree repo is published to 
mirror.centos.org(http://mirror.centos.org/centos/7/atomic/x86_64/repo).

CentOS Atomic Host includes these core component versions:

* kernel-3.10.0-327.4.5.el7.x86_64
* cloud-init-0.7.5-10.el7.centos.1.x86_64
* atomic-1.6-6.gitca1e384.el7.x86_64
* kubernetes-1.0.3-0.2.gitb9a88a7.el7.x86_64
* etcd-2.1.1-2.el7.x86_64
* ostree-2015.9-2.atomic.el7.x86_64
* docker-1.8.2-10.el7.centos.x86_64
* flannel-0.5.3-8.el7.x86_64

## 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 
(http://cloud.centos.org/centos/7/atomic/images/CentOS-Atomic-Host-7-Vagrant
-Libvirt.box) (416 MB) and CentOS-Atomic-Host-7-Vagrant-Virtualbox.box 
(http://cloud.centos.org/centos/7/atomic/images/CentOS-Atomic-Host-7-Vagrant
-Virtualbox.box) (428 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 
(http://cloud.centos.org/centos/7/atomic/images/CentOS-Atomic-Host-7-Install
er.iso)  (737 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 allows flexibility to control the install using kickstarts and  
define custom storage, networking and user accounts. This is the  
recommended process for getting CentOS Atomic Host onto bare metal  
machines, or to generate your own image sets for custom environments.

### QCOW2

The CentOS-Atomic-Host-7-GenericCloud.qcow2 
(http://cloud.centos.org/centos/7/atomic/images/CentOS-Atomic-Host-7-Generic
Cloud.qcow2) (1 GB)  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(http://www.projectatomic.io/blog/2014/10/getting-started-with-cloud-init
/) NoCloud iso image.

### Amazon Machine Images

Region         Image ID
------         --------

us-east-1      ami-896653e3
us-west-2      ami-1f94747f
us-west-1      ami-dae791ba
eu-west-1      ami-430aba30
eu-central-1   ami-40d6cd2c
ap-southeast-1 ami-4319d720
ap-northeast-1 ami-b54d4adb
ap-southeast-2 ami-27123544
ap-northeast-2 ami-961fd1f8
sa-east-1      ami-238d0e4f

### SHA Sums

4062ef213eed698ac8ec03b32a55dd6903721a44dc8d54a18513644f160ca7d4  
CentOS-Atomic-Host-7.20160130-GenericCloud.qcow2
a7dd91736f45101e95e7d9a80c2eede9164eb0392c8c4748b08c98a42d3eda39  
CentOS-Atomic-Host-7.20160130-GenericCloud.qcow2.gz
9eca81d3638e4e00fc734d7233b47a3af803237cc82e5a66b3a587552232dcdc  
CentOS-Atomic-Host-7.20160130-GenericCloud.qcow2.xz
be3c1a3326c04026f37bd6b6c2fccca3a285ea40ac663230624854abeaaee135  
CentOS-Atomic-Host-7.20160130-Installer.iso
90942c3599e15ae21cdc0b1682b8e0d3fa88f8db2f6fdca0ece28c2bffdbb34f  
CentOS-Atomic-Host-7.20160130-Vagrant-Libvirt.box
ce674573f6d7020b3d04c51f070d7172e71b6a4316c1495c238a7eac0260cb5a  
CentOS-Atomic-Host-7.20160130-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 
(http://wiki.centos.org/SpecialInterestGroup/Atomic), based on upstream 
work from  Project Atomic (http://www.projectatomic.io/). 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 
(https://lists.projectatomic.io/mailman/listinfo/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 
(http://lists.centos.org/mailman/listinfo/centos-devel) mailing list. 

Have questions about using Atomic? See the atomic 
(https://lists.projectatomic.io/mailman/listinfo/atomic) mailing list or 
find us in the #atomic channel on Freenode.




---

Jason Brooks
Red Hat Open Source and Standards

@jasonbrooks | @redhatopen
http://community.redhat.com