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Instead of installing these things in puppet[1] we can build them into the image. This also carries-over a TODO to install git-review in a virtualenv and update jobs to use it. [1] http://git.openstack.org/cgit/openstack-infra/system-config/tree/modules/openstack_project/manifests/single_use_slave.pp?id=b3f8b4106c2d391c60f4c3c10e1b6c313b211f17#n47 Change-Id: Ibe427f8b43312f58b4a1a4a1205b764a9d2d79e9 |
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| .. | ||
| cache-bindep | ||
| cache-devstack | ||
| infra-package-needs | ||
| initialize-urandom | ||
| nodepool-base | ||
| openstack-repos | ||
| prepare-node | ||
| puppet | ||
| stackviz | ||
| zuul-worker | ||
| README.rst | ||
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 debootstrapInstall diskimage-builder:
sudo -H pip install diskimage-builderBuild an image
Building an image is simple, we have a script!
bash tools/build-image.shSee 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/newimageor 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.shOther 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.