openstack/project-config

History

Matthew Treinish 1f84dbb2ce Build wheel house during nodepool devstack caching This commit adds calling tools/build_wheels.sh to the cache devstack step in the nodepool scripts. This will generate and cache the wheels before the devstack run, which is a length process normally involving C compilations. Change-Id: I9064d7d9b9b879a05d665c3b002a631fcc953f52		2015-03-06 18:27:51 -05:00
..
cache-devstack	Build wheel house during nodepool devstack caching	2015-03-06 18:27:51 -05:00
node-devstack	Move to using package-installs.yaml	2014-12-11 13:48:13 -08:00
nodepool-base	Run restrict-memory element later in image build	2015-02-24 18:52:06 +00:00
openstack-repos	Rename config => system-config for nodepool	2014-10-17 21:28:44 +00:00
puppet	Stop using py3k-precise nodes	2015-01-30 23:47:30 +00:00
slave-db	Reorganizes project-config	2014-09-25 11:41:04 -04:00
README.rst	Always use sudo -H when pip installing	2014-12-26 10:41:58 +01:00

README.rst

Using diskimage-builder to build devstack-gate nodes

In addition to being able to just download and consume images that are the same as what run devstack-gate, it's easy to make your own for local dev or testing - or just for fun.

Install diskimage-builder

Install the dependencies:

sudo apt-get install kpartx qemu-utils curl python-yaml

Install diskimage-builder:

sudo -H pip install diskimage-builder

Build an image

Building an image is simple, we have a script!

DISTRO="ubuntu" bash tools/build-image.sh

See the script for environment variables to set distribution, etc. You should be left with a .qcow2 image file of your selected distribution.

It is a good idea to set TMP_DIR to somewhere with plenty of space to avoid the disappointment of a full-disk mid-way through the script run.

Mounting the image

If you would like to examine the contents of the image, you can mount it on a loopback device using qemu-nbd.

sudo apt-get install qemu-utils
sudo modprobe nbd max_part=16
sudo mkdir -p /tmp/newimage
sudo qemu-nbd -c /dev/nbd1 devstack-gate-precise.qcow2
sudo mount /dev/nbd1 /tmp/newimage

Other things

It's a qcow2 image, so you can do tons of things with it. You can upload it to glance, you can boot it using kvm, and you can even copy it to a cloud server, replace the contents of the server with it and kexec the new kernel.