diskimage-builder

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Ben Nemec 4e5dcdd9cf Clean more from ironic-agent ramdisk image While we already clean a number of things off the ironic-agent ramdisk, there are a few more significant ones that we should add to the list. First is the kernel source. If you're rebuilding your kernel on the agent ramdisk after the initial image build, then you need to re-examine your life choices. ;-) Second is /var/cache. On yum-based distros, this contains a large number of yum cache files that take up significant space. We don't really want to be copying around caches when booting a ramdisk anyway, so cleaning this is the right thing to do regardless. Third is all .pyc or .pyo files. There are a lot of these, so they eat up significant space and bloat the number of files in the ramdisk, which makes it take longer to build. the only purpose for the files is to slightly speed up Python app startup, and we probably lose more time transferring the files over the network than we would gain in quicker start times. Note that we were already trying to remove these, but for some reason I was still seeing them show up in my final images. It makes more sense to put them in the same pruning command as all the others anyway. Fourth is /usr/include. These are files only needed for compilation. See above for my thoughts on compiling in a ramdisk. These changes have reduced the agent ramdisk from 391 MB to 333 MB in my local centos 7 builds, and have reduced the number of files in the ramdisk by over 18000. Change-Id: I550f9904b9afd12d48da9ba24559acb23133d076		2016-06-24 13:21:32 -05:00
bin	Merge "Add PS4 to show file/function/line in debug output"	2016-06-07 01:14:08 +00:00
diskimage_builder	Introspect logging testing more	2016-06-16 13:54:52 +10:00
doc/source	Merge "Add a best-effort sudo safety check"	2016-05-26 17:31:00 +00:00
elements	Clean more from ironic-agent ramdisk image	2016-06-24 13:21:32 -05:00
lib	Merge "Refactor: remove unused functions"	2016-06-07 01:01:13 +00:00
releasenotes	Release notes for 1.17.0	2016-06-07 10:57:10 +10:00
tests	Merge "Add test dependency installation on Gentoo"	2016-05-13 03:18:55 +00:00
.gitignore	Ignore manifest outputs more carefully.	2014-06-26 04:29:51 +12:00
.gitreview	Update stackforge references to openstack	2013-08-17 22:58:26 -04:00
.testr.conf	Add unit test for cache-url	2014-09-30 16:39:21 -05:00
babel.cfg	Make it possible for openstack-CI to run tests	2013-02-04 22:26:17 -08:00
LICENSE	Fix copyrights for HP work.	2012-11-15 16:20:32 +13:00
MANIFEST.in	Remove old entries from MANIFEST.in	2015-09-02 15:15:13 +10:00
README.rst	Make README.rst a bit more generic	2015-09-16 13:52:43 +10:00
requirements.txt	Updated from global requirements	2016-05-13 00:39:26 +00:00
setup.cfg	Remove deprecated disk-image-get-kernel	2015-07-06 16:44:07 +00:00
setup.py	Updated from global requirements	2015-09-22 09:17:08 +00:00
test-requirements.txt	Updated from global requirements	2016-06-21 17:58:29 +00:00
tox.ini	Add releasenotes	2016-04-21 13:19:53 +10:00

README.rst

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=trusty disk-image-create -o ubuntu-trusty.qcow2 vm ubuntu

will create a bootable Ubuntu Trusty 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
<http://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:

* http://docs.openstack.org/developer/diskimage-builder/

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.