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Steve Baker 7e38f85724 A new diskimage-builder command for yaml image builds
The `diskimage-builder` command provides a yaml file based interface
to `disk-image-create` and `ramdisk-image-create`. Every argument to
these scripts has a YAML equivalent. The command has the following
features:
- Environment values can be provided from the calling environment as
  well as YAML
- All arguments are validated with jsonschema in the most appropriate
  YAML type
- Schema is self-documenting and printed when running with --help
- Multiple YAML files can be specified and each file can have multiple
  images defined
- Entries with duplicate image names will be merged into a single
  image build, with attributes overwritten, elements appended, and
  environment values updated/overwritten. A missing image name implies
  the same image name as the previous entry.
- --dry-run and --stop-on-failure flags

A simple YAML defintion would resemble:

- imagename: centos-minimal
  checksum: true
  install-type: package
  elements: [centos, vm]
- imagename: ironic-python-agent
  elements:
  - ironic-python-agent-ramdisk
  - extra-hardware

The TripleO project has managed image build options with YAML files
and it has proved useful having git history and a diff friendly
format, specifically for the following situations:
- Managing differences between distros (centos, rhel)
- Managing changes in major distro releases (centos-8, centos-9-stream)
- Managing the python2 to python3 transition, within and across major
  distro releases

Now that the TripleO toolchain is being retired this tool is being
proposed to be used for the image builds of TripleO's successor, as
well as the rest of the community.

Subsequent commits will add documentation and switch some tests to
using `diskimage-builder`.

Change-Id: I95cba3530d1b1c6c52cf547338762e33738f7225
2023-03-13 09:01:49 +13:00
.zuul.d tox jobs: pin to correct nodesets; use host networking for containerfile 2022-12-16 09:52:46 +11:00
bin dib-lint: match text/x-script.python 2021-05-10 14:29:51 +10:00
diskimage_builder A new diskimage-builder command for yaml image builds 2023-03-13 09:01:49 +13:00
doc Support LVM thin provisioning 2022-08-24 10:34:42 +12:00
playbooks Add Jammy functesting to dib 2022-05-04 13:03:50 -07:00
releasenotes A new diskimage-builder command for yaml image builds 2023-03-13 09:01:49 +13:00
roles Upgrade openEuler to 22.03 LTS 2022-08-01 19:22:35 +08:00
tests Fix openSUSE images and bump them to 15.3 2022-01-28 02:18:47 -03:00
.gitignore Migrate from testr to stestr 2021-06-30 18:58:35 +05:30
.gitreview OpenDev Migration Patch 2019-04-19 19:26:30 +00:00
.stestr.conf Migrate from testr to stestr 2021-06-30 18:58:35 +05:30
bindep.txt Remove py 3.6 support and update jobs 2022-06-03 08:43:37 -07:00
LICENSE Fix copyrights for HP work. 2012-11-15 16:20:32 +13:00
lower-constraints.txt A new diskimage-builder command for yaml image builds 2023-03-13 09:01:49 +13:00
pylint.cfg Refactor: use lazy logging 2017-05-30 14:39:58 +10:00
README.rst Update readme to clarify an ubuntu bionic image is built 2020-06-07 19:53:46 +02:00
requirements.txt A new diskimage-builder command for yaml image builds 2023-03-13 09:01:49 +13:00
setup.cfg A new diskimage-builder command for yaml image builds 2023-03-13 09:01:49 +13:00
setup.py Cleanup py27 and docs support 2020-06-05 12:04:30 +02:00
test-requirements.txt Migrate from testr to stestr 2021-06-30 18:58:35 +05:30
tox.ini Clean up tox.ini for tox v4 2023-01-09 08:18:01 -08:00

Image building tools for OpenStack
==================================

``diskimage-builder`` is a flexible suite of components for building a
wide-range of disk images, filesystem images and ramdisk images for
use with OpenStack.

This repository has the core functionality for building such images,
both virtual and bare metal. Images are composed using `elements`;
while fundamental elements are provided here, individual projects have
the flexibility to customise the image build with their own elements.

For example::

  $ DIB_RELEASE=bionic disk-image-create -o ubuntu-bionic.qcow2 vm ubuntu

will create a bootable Ubuntu Bionic based ``qcow2`` image.

``diskimage-builder`` is useful to anyone looking to produce
customised images for deployment into clouds. These tools are the
components of `TripleO <https://wiki.openstack.org/wiki/TripleO>`__
that are responsible for building disk images. They are also used
extensively to build images for testing OpenStack itself, particularly
with `nodepool
<https://docs.openstack.org/infra/system-config/nodepool.html>`__.
Platforms supported include Ubuntu, CentOS, RHEL and Fedora.

Full documentation, the source of which is in ``doc/source/``, is
published at:

* https://docs.openstack.org/diskimage-builder/latest/

Copyright
=========

Copyright 2012 Hewlett-Packard Development Company, L.P.
Copyright (c) 2012 NTT DOCOMO, INC.

All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may
not use this file except in compliance with the License. You may obtain
a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations
under the License.