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README.rst

fedora-atomic

Generates a Fedora Atomic image based on a public deployed tree. This element has been tested under Debian, Ubuntu, CentOS and Fedora operating systems.

Pre-requisites to run diskimage-builder

For diskimage-builder to work, following packages need to be present:

  • python-dev
  • build-essential
  • python-pip
  • kpartx
  • python-lzma
  • qemu-utils
  • yum
  • yum-utils
  • python-yaml

For Debian/Ubuntu systems, use:

apt-get install python-dev build-essential python-pip kpartx python-lzma qemu-utils yum yum-utils python-yaml

For CentOS and Fedora < 22, use:

yum install python-dev build-essential python-pip kpartx python-lzma qemu-utils yum yum-utils python-yaml

For Fedora >= 22, use:

dnf install python-dev build-essential python-pip kpartx python-lzma qemu-utils yum yum-utils python-yaml

diskimage-builder can be installed using pip:

pip install diskimage-builder

How to generate Fedora Atomic image

To generate an atomic image for Fedora 23 these commands can be executed:

export ELEMENTS_PATH=/path/to/diskimage-builder/elements:/path/to/magnum/elements
export DIB_RELEASE=23     # this can be switched to the desired version
export DIB_IMAGE_SIZE=2   # we need to give a bit more space to loopback device
disk-image-create fedora-atomic

This element can consume already published trees, but you can use it to consume your own generated trees. Documentation about creating own trees can be found at http://developers.redhat.com/blog/2015/01/08/creating-custom-atomic-trees-images-and-installers-part-1/

Environment Variables

To properly reference the tree, the following env vars can be set:

FEDORA_ATOMIC_TREE_URL
Required

Yes

Description

Url for the public fedora-atomic tree to use. It can reference to own published trees.

Default

https://dl.fedoraproject.org/pub/fedora/linux/atomic/23/

FEDORA_ATOMIC_TREE_REF
Required

Yes

Description

Reference of the tree to install.

Default

954bdbeebebfa87b625d9d7bd78c81400bdd6756fcc3205987970af4b64eb678