The CentOS Atomic SIG has released an [updated version](https://wiki.centos.org/SpecialInterestGroup/Atomic/Download) of CentOS Atomic Host (7.1906), an 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.
CentOS Atomic Host includes these core component versions:
* atomic-1.22.1-26.gitb507039.el7.centos.x86_64 * rpm-ostree-client-2018.5-2.atomic.el7.x86_64 * ostree-2018.5-1.el7.x86_64 * cloud-init-18.2-1.el7.centos.2.x86_64 * docker-1.13.1-96.gitb2f74b2.el7.centos.x86_64 * kernel-3.10.0-957.21.3.el7.x86_64 * podman-1.3.2-1.git14fdcd0.el7.centos.x86_64 * flannel-0.7.1-4.el7.x86_64 * etcd-3.3.11-2.el7.centos.x86_64
## Download CentOS Atomic Host
CentOS Atomic Host is available as a VirtualBox or libvirt-formatted Vagrant box, or as an installable ISO, or qcow2 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](http://www.projectatomic.io/). 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-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.