Image building tools for OpenStack

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Ian Wienand 349e8db2f7 yum-minimal: pre-install base packages We were getting some subtle issues in fedora-minimal builds that turned out to be because /var/run was not a symlink to /run. Upon further investigation, it turns out that yum is creating a /var/run directory for it's pid file when it starts working in the empty chroot (which I verified by stracing it) --- 5905 stat("/home/ubuntu/tmp/dib-tmp/image.Ac4VZZsl/mnt/var/run", 0x7ffddffa0330) = -1 ENOENT (No such file or directory) 5905 mkdir("/home/ubuntu/tmp/dib-tmp/image.Ac4VZZsl/mnt/var/run", 0755) = 0 5905 open("/home/ubuntu/tmp/dib-tmp/image.Ac4VZZsl/mnt/var/run/yum.pid", O_WRONLY\|O_CREAT\|O_EXCL, 0644) = 6 --- Because this happens before we install "filesystem" (the package), we mess up it's symlinking. To work-around this, pre-install the trio of base packages (setup, basesystem, filesystem) with rpm from outside the chroot. Change-Id: I411b6ec9d91d95d3a0f98e76853086af3b70abe8		2016-02-11 15:42:10 +11:00
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doc/source	Move speedup section to image building guide	2016-01-18 07:02:00 +00:00
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lib	Cleanup unmount_dir function	2016-01-28 14:47:43 +11:00
tests	Merge "Don't use wc -l for the umount check"	2016-01-29 04:35:28 +00:00
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.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
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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 that are responsible for building disk images. They are also used extensively to build images for testing OpenStack itself, particularly with nodepool. 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

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.