Fedora Atomic (Host)

Fedora Atomic is a sub-spin of the Cloud product in Fedora that is an implementation of the Atomic Host pattern defined by http://projectatomic.io

See the original change: https://fedoraproject.org/wiki/Changes/Atomic_Cloud_Image as well as the updated https://fedoraproject.org/wiki/Changes/AtomicHost

Tools and source files

The fedora-atomic-docker-host.json file is the core manifest defining what goes into the host (ostree) content.

The rpm-ostree tool is invoked inside Fedora rel-eng; see: https://git.fedorahosted.org/cgit/releng/tree/scripts/run-pungi#n48 - To submit patches https://lists.fedoraproject.org/pipermail/rel-eng/ - No public log output currently, dgilmore may tell you if it breaks

It makes an OSTree commit from a set of RPM packages, which clients then replicate.

This git repository holds the core manifest file fedora-atomic-docker-host.json that is used for that process.

Cloud images

Cloud (VM) images are generated inside Koji (using ImageFactory -> Anaconda), using the tree content (note use of the ostreesetup Kickstart verb).

The spin-kickstarts for Fedora is here: https://git.fedorahosted.org/git/spin-kickstarts.git

The images are started via the above releng git repository, and a list of Koji tasks can be found here:

http://koji.fedoraproject.org/koji/tasks?state=all&owner=masher&view=flat&method=createImage&order=-id

Installer

Installer is different for 2 reasons: - Embeds content - Uses different partitioning scheme - https://github.com/projectatomic/fedora-productimg-atomic - https://git.fedorahosted.org/cgit/spin-kickstarts.git/tree/atomic-installer - lorax --nomacboot -p 'Fedora Atomic' -v 22 -r 22 --source=https://dl.fedoraproject.org/pub/fedora/linux/development/22/x86_64/os/ --add-template /srv/fedora-atomic/spin-kickstarts/atomic-installer/lorax-configure-repo.tmpl --add-template-var=ostree_osname=fedora-atomic --add-arch-template-var=ostree_repo=https://dl.fedoraproject.org/pub/fedora/linux/atomic/22/ --add-template-var=ostree_ref=fedora-atomic/f22/x86_64/docker-host --add-arch-template /srv/fedora-atomic/spin-kickstarts/atomic-installer/lorax-embed-repo.tmpl --add-arch-template-var=ostree_osname=fedora-atomic --add-arch-template-var=ostree_ref=fedora-atomic/f22/x86_64/docker-host -i fedora-productimg-atomic /var/tmp/lorax

For some information on how this developed, see: https://fedorahosted.org/rel-eng/ticket/6119

PXE-to-Live

• dgilmore wanted QA process for gating respins of this (Theoretically similar to cloud image updates)
• Concern how often to respin

Alt.fedoraproject.org: public mirror space for arbitrary content

• Server atomic01.qa.fedoraproject.org rsyncs to this
• Managed via ansible: https://github.com/cgwalters/fedora-atomic-infra

• Run rpm-ostree-toolbox by hand rpm-ostree-toolbox liveimage -o scratch/pxetolive --tdl fedora-atomic/fedora-atomic-22.tdl -k spin-kickstarts/fedora-cloud-atomic-pxetolive.ks -c fedora-atomic/config.ini --overwrite

• Old style script for running composes https://github.com/projectatomic/rpm-ostree-toolbox/tree/master/src/scripts

• Current state: Run by hand

• New idea: set up jenkins

• For event driven: respond to fedmsg (git commits and yum repositories)

Gaps

• No GPG signing (On either Fedora or CentOS)