project-config/nodepool/elements
Paul Belanger 153aeae4f0
Revert "Revert "Remove zuul-env from DIB images""
We've updated the fetch-zuul-cloner role to properly create the
virtualenv and pyyaml dependency now.

This reverts commit 132cdf30d5.

Change-Id: I3fee0144eef4adeeb2b1f905c1f58c5bb4a6e554
Depends-On: I3e55a3a1582aa7dea21c7de67260c2c906c2192b
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
2017-11-22 13:43:47 -05:00
..
cache-devstack Replace git:// with https:// 2017-11-17 09:06:21 -06:00
infra-package-needs make a gentoo nodepool image 2017-10-18 15:20:11 -05:00
initialize-urandom Fix flake8 2017-10-21 18:37:10 +02:00
jenkins-slave make a gentoo nodepool image 2017-10-18 15:20:11 -05:00
nodepool-base Revert "Revert "Remove zuul-env from DIB images"" 2017-11-22 13:43:47 -05:00
openstack-repos Replace git:// with https:// 2017-11-17 09:06:21 -06:00
zuul-worker make a gentoo nodepool image 2017-10-18 15:20:11 -05:00
README.rst Update doc to have 'debootstrap' dep and describe minimal 2016-10-12 19:27:05 -07:00

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 debootstrap

Install diskimage-builder:

sudo -H pip install diskimage-builder

Build an image

Building an image is simple, we have a script!

bash tools/build-image.sh

See the script for environment variables to set distribution, etc. By default it builds an ubuntu-minimal based image. You should be left with a .qcow2 image file of your selected distribution.

Infra uses the -minimal build type for building Ubuntu/CentOS/Fedora. For example: ubuntu-minimal.

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.

While testing, consider exporting DIB_OFFLINE=true, to skip updating the cache.

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 /path/to/devstack-gate-precise.qcow2
sudo mount /dev/nbd1p1 /tmp/newimage

or use the scripts

sudo apt-get install qemu-utils
sudo modprobe nbd max_part=16
sudo tools/mount-image.sh devstack-gate-precise.qcow2
sudo tools/umount-image.sh

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.