System for quickly installing an OpenStack cloud from upstream git for testing and development.
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Ghanshyam Mann 2e4b708e25 Add a variable to configure the Tempest venv upper constraints
We use Tempest master for testing the supported stable
branches so using master upper constraints works fine but
when we need to use old Tempest in the below cases then master
upper constraints do not work and devstack will not be
able to install Tempest in vnenv:

- Testing Extended Maintenance branch
- Testing py2.7 jobs until stable/train with in-tree tempest plugins

This commit adds a variable to set the compatible upper constraint
to use for Tempest's old version.

Few of the current failure which can be fixed by this new configurable var:
- networking-generic-switch-tempest-dlm-python2
  - https://zuul.opendev.org/t/openstack/build/ebcf3d68d62c4af3a43a222aa9ce5556
- devstack-platform-xenial on stable/steinand stable/train
  - https://zuul.opendev.org/t/openstack/build/37ffc1af6f3f4b44b5ca8cbfa27068ac

Change-Id: I5b2217d85e6871ca3f7a3f6f859fdce9a50d3946
(cherry picked from commit 3bdc8f66ad)
2021-02-20 14:08:02 -06:00
data Fix comment in plugin-registry header 2016-08-31 10:07:06 +10:00
doc Fix propose-updates job 2020-08-02 13:13:00 +02:00
extras.d Merge "Ensure testing configuration can run as late as possible" 2016-11-30 16:30:38 +00:00
files Add a dependency file for os-brick (and add lsscsi) 2020-08-13 09:55:08 +02:00
gate Mostly docs cleanups 2015-03-28 14:35:12 -05:00
inc Use SETUPTOOLS_USE_DISTUTILS=stdlib for global pip installs 2020-08-31 15:01:20 +02:00
lib Add a variable to configure the Tempest venv upper constraints 2021-02-20 14:08:02 -06:00
playbooks New get-devstack-os-environment role 2020-08-18 22:29:50 +02:00
roles New get-devstack-os-environment role 2020-08-18 22:29:50 +02:00
samples Fix default security group in samples/local.sh 2019-09-05 14:30:41 +00:00
tests Update devstack branches for stable/victoria 2020-09-30 17:40:57 +09:00
tools Workaround for new pip 20.3 behavior 2020-11-30 23:06:46 +00:00
.gitignore Ignore local.conf in root of repo 2018-12-18 09:04:49 +00:00
.gitreview Update .gitreview for stable/victoria 2020-09-29 15:05:52 +00:00
.mailmap Remove AUTHORS 2014-08-14 13:52:28 +10:00
.zuul.yaml Add Fedora 32 to supported list and use as fedora-latest 2020-09-25 11:33:57 +01:00
clean.sh move cleanup of pyc files 2020-09-02 04:48:31 +00:00
CONTRIBUTING.rst [ussuri][goal] Update contributor documentation 2020-04-23 02:56:13 +00:00
functions Remove standalone requirement for glance import 2020-07-22 07:03:57 -07:00
functions-common move cleanup of pyc files 2020-09-02 04:48:31 +00:00
FUTURE.rst Document where we are going 2015-02-05 16:20:52 -05:00
HACKING.rst Merge "Update HACKING doc" 2020-09-16 06:24:39 +00:00
LICENSE Add Apache 2 LICENSE file 2012-04-18 01:45:35 -05:00
MAINTAINERS.rst Move Sahara into in-tree plugin 2015-07-01 16:09:56 +00:00
Makefile Suppressed echoing of the line. 2016-04-30 14:11:52 +05:30
openrc Revert "Drop keystone dedicated ports" 2020-07-06 14:01:08 -05:00
README.rst Update (git|review).openstack.org links to opendev 2019-06-21 14:35:16 +10:00
run_tests.sh Remove old comment in run_tests.sh 2015-04-17 13:23:25 +10:00
setup.cfg Cleanup py27 support 2020-05-09 13:35:01 +02:00
setup.py Convert all HTML doc to RST 2014-10-22 12:27:00 -04:00
stack.sh Merge "Update opensuse version" 2020-09-28 19:29:34 +00:00
stackrc Add a variable to configure the Tempest venv upper constraints 2021-02-20 14:08:02 -06:00
tox.ini Cleanup py27 support 2020-05-09 13:35:01 +02:00
unstack.sh move cleanup of pyc files 2020-09-02 04:48:31 +00:00

DevStack is a set of scripts and utilities to quickly deploy an OpenStack cloud from git source trees.

Goals

  • To quickly build dev OpenStack environments in a clean Ubuntu or Fedora environment
  • To describe working configurations of OpenStack (which code branches work together? what do config files look like for those branches?)
  • To make it easier for developers to dive into OpenStack so that they can productively contribute without having to understand every part of the system at once
  • To make it easy to prototype cross-project features
  • To provide an environment for the OpenStack CI testing on every commit to the projects

Read more at https://docs.openstack.org/devstack/latest

IMPORTANT: Be sure to carefully read stack.sh and any other scripts you execute before you run them, as they install software and will alter your networking configuration. We strongly recommend that you run stack.sh in a clean and disposable vm when you are first getting started.

Versions

The DevStack master branch generally points to trunk versions of OpenStack components. For older, stable versions, look for branches named stable/[release] in the DevStack repo. For example, you can do the following to create a Pike OpenStack cloud:

git checkout stable/pike
./stack.sh

You can also pick specific OpenStack project releases by setting the appropriate *_BRANCH variables in the localrc section of local.conf (look in stackrc for the default set). Usually just before a release there will be milestone-proposed branches that need to be tested:

GLANCE_REPO=https://opendev.org/openstack/glance.git
GLANCE_BRANCH=milestone-proposed

Start A Dev Cloud

Installing in a dedicated disposable VM is safer than installing on your dev machine! Plus you can pick one of the supported Linux distros for your VM. To start a dev cloud run the following NOT AS ROOT (see DevStack Execution Environment below for more on user accounts):

./stack.sh

When the script finishes executing, you should be able to access OpenStack endpoints, like so:

We also provide an environment file that you can use to interact with your cloud via CLI:

# source openrc file to load your environment with OpenStack CLI creds
. openrc
# list instances
openstack server list

DevStack Execution Environment

DevStack runs rampant over the system it runs on, installing things and uninstalling other things. Running this on a system you care about is a recipe for disappointment, or worse. Alas, we're all in the virtualization business here, so run it in a VM. And take advantage of the snapshot capabilities of your hypervisor of choice to reduce testing cycle times. You might even save enough time to write one more feature before the next feature freeze...

stack.sh needs to have root access for a lot of tasks, but uses sudo for all of those tasks. However, it needs to be not-root for most of its work and for all of the OpenStack services. stack.sh specifically does not run if started as root.

DevStack will not automatically create the user, but provides a helper script in tools/create-stack-user.sh. Run that (as root!) or just check it out to see what DevStack's expectations are for the account it runs under. Many people simply use their usual login (the default 'ubuntu' login on a UEC image for example).

Customizing

DevStack can be extensively configured via the configuration file local.conf. It is likely that you will need to provide and modify this file if you want anything other than the most basic setup. Start by reading the configuration guide for details of the configuration file and the many available options.