The Gatekeeper, or a project gating system
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Tobias Henkel ae887dab58
Improve resource usage with semaphores
Currently when jobs use semaphores they first get and lock the build
nodes and then aquire the semaphore. If there are many jobs waiting
for the semaphore this can block a substantial part of the available
resources. In order to make this safe default to acquire the semaphore
before requesting the nodes.

However in some cases when jobs with a semaphore shall run as fast as
possible in a consecutive manner then it might be preferrable to
accept some waste of resources. In order to support this use case the
job using a semaphore can override this behavior and still acquire the
semaphore after getting the nodes.

Change-Id: Id6f582ec29219d280d05319d1b822c7934437b7a
2018-11-20 15:20:59 +01:00
doc Improve resource usage with semaphores 2018-11-20 15:20:59 +01:00
etc Fix indent error for layout.yaml-sample. 2018-06-20 12:20:23 +08:00
playbooks Merge "Fix unreachable nodes detection" 2018-11-05 12:34:24 +00:00
releasenotes/notes Improve resource usage with semaphores 2018-11-20 15:20:59 +01:00
tests Improve resource usage with semaphores 2018-11-20 15:20:59 +01:00
tools Small script to scrape Zuul job node usage 2018-10-30 09:17:57 -07:00
web web: uses queues uid to preserve state on change 2018-11-02 02:57:16 +00:00
zuul Improve resource usage with semaphores 2018-11-20 15:20:59 +01:00
.coveragerc Revert "Revert "Switch to stestr"" 2018-05-17 08:33:40 -07:00
.gitignore Exclude .keep files from .gitignore 2018-10-20 00:36:28 +03:00
.gitreview Updated .gitreview location 2012-12-16 20:34:13 +00:00
.mailmap Fix pep8 E127 violations 2012-09-26 14:23:10 +00:00
.stestr.conf Revert "Revert "Switch to stestr"" 2018-05-17 08:33:40 -07:00
.zuul.yaml Collect docker logs after quick-start run 2018-10-25 06:25:05 -07:00
COPYING Update README and add GPL license 2018-03-19 09:25:52 -07:00
LICENSE Initial commit. 2012-05-29 14:49:32 -07:00
MANIFEST.in Revert "Revert "web: rewrite interface in react"" 2018-10-06 10:42:31 -05:00
README.rst Switch storyboard url to be by name 2018-08-03 10:18:12 -05:00
TESTING.rst Revert "Revert "web: rewrite interface in react"" 2018-10-06 10:42:31 -05:00
bindep.txt Add coreutils to bindep on platform apk 2018-09-29 09:20:56 +02:00
requirements.txt Uncap cherrypy 2018-09-27 02:13:30 +00:00
setup.cfg Add line to setup.cfg limiting to python >=3.5 2018-10-12 14:54:51 -05:00
setup.py Partial sync with OpenStack requirements. 2013-09-25 15:30:37 -07:00
test-requirements.txt Merge "Use doc/requirements.txt" 2018-10-29 07:11:37 +00:00
tox.ini Add ignore_basepython_conflict option to tox.ini 2018-11-06 08:17:49 -06:00

README.rst

Zuul

Zuul is a project gating system.

The latest documentation for Zuul v3 is published at: https://zuul-ci.org/docs/zuul/

If you are looking for the Edge routing service named Zuul that is related to Netflix, it can be found here: https://github.com/Netflix/zuul

If you are looking for the Javascript testing tool named Zuul, it can be found here: https://github.com/defunctzombie/zuul

Getting Help

There are two Zuul-related mailing lists:

zuul-announce

A low-traffic announcement-only list to which every Zuul operator or power-user should subscribe.

zuul-discuss

General discussion about Zuul, including questions about how to use it, and future development.

You will also find Zuul developers in the #zuul channel on Freenode IRC.

Contributing

To browse the latest code, see: https://git.zuul-ci.org/cgit/zuul/tree/ To clone the latest code, use git clone https://git.zuul-ci.org/zuul

Bugs are handled at: https://storyboard.openstack.org/#!/project/openstack-infra/zuul

Code reviews are handled by gerrit at https://review.openstack.org

After creating a Gerrit account, use git review to submit patches. Example:

# Do your commits
$ git review
# Enter your username if prompted

Join #zuul on Freenode to discuss development or usage.

License

Zuul is free software. Most of Zuul is licensed under the Apache License, version 2.0. Some parts of Zuul are licensed under the General Public License, version 3.0. Please see the license headers at the tops of individual source files.

Python Version Support

Zuul v3 requires Python 3. It does not support Python 2.

As Ansible is used for the execution of jobs, it's important to note that while Ansible does support Python 3, not all of Ansible's modules do. Zuul currently sets ansible_python_interpreter to python2 so that remote content will be executed with Python 2.