[CentOS-devel] CentOS Atomic Host Updated

Tue Nov 24 18:46:41 UTC 2015

Today we're announcing an update to CentOS Atomic Host (version 
7.20151118), 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. Please note that this 
release is based on content derived from the upstream 7.1 release.

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-3.10.0-229.20.1.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-2015.6-4.atomic.el7.x86_64
* docker-1.8.2-7.el7.centos.x86_64
* flannel-0.2.0-10.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/at
omic/images/CentOS-Atomic-Host-7-Vagrant-Libvirt.box) (409 MB) and 
CentOS-Atomic-Host-7-Vagrant-Virtualbox.box(http://cloud.centos.org/centos/7
/atomic/images/CentOS-Atomic-Host-7-Vagrant-Virtualbox.box) (421 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(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-Inst
aller.iso)  (673 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/ato
mic/images/CentOS-Atomic-Host-7-GenericCloud.qcow2) (934 MB)  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. The Generic Cloud image is also available compressed 
in gz 
format(http://cloud.centos.org/centos/7/atomic/images/CentOS-Atomic-Host-7-G
enericCloud.qcow2.gz) (408 MB) and xz 
compressed(http://cloud.centos.org/centos/7/atomic/images/CentOS-Atomic-Host
-7-GenericCloud.qcow2.xz) (323 MB).

### Amazon Machine Images

Region         Image ID
------         --------
sa-east-1      ami-39348e55
ap-northeast-1 ami-cec7e4a0
ap-southeast-2 ami-5e421b3d
us-west-2      ami-cb6878aa
ap-southeast-1 ami-49a4652a
eu-central-1   ami-f72b399b
eu-west-1      ami-3c2ff54f
us-west-1      ami-48e88628
us-east-1      ami-19d59073

### SHA Sums

cf7c5e67e18a3aaa27d1c6c4710bb9c45a62c80fb5e18a836a2c19758eb3d23e  
CentOS-Atomic-Host-7.20151101-GenericCloud.qcow2
92cf36f528ae00235ad6eb4ee0d0dd32ccf5f729f2c6c9a99a7471882effecaa  
CentOS-Atomic-Host-7.20151101-GenericCloud.qcow2.gz
263c1f403c352d31944ca8c814fd241693caa12dbd0656a22cdc3f04ca3ca8d1  
CentOS-Atomic-Host-7.20151101-GenericCloud.qcow2.xz
dfe0c85efff2972d15224513adc75991aabc48ec8f8ad49dad44f8c51cfb8165  
CentOS-Atomic-Host-7.20151101-Installer.iso
139eb88d6a5d1a54ae3900c5643f04c4291194d7b3fccf8309b8961bbd33e4ec  
CentOS-Atomic-Host-7.20151101-Vagrant-Libvirt.box
63ab56d08cdc75249206ad8a7ee3cdd51a226257c8a74053a72564c3ff3d91a0  
CentOS-Atomic-Host-7.20151101-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.