The Gatekeeper, or a project gating system
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Zuul dbc210ce1d Merge "Enable starting executors in paused mode" 21 minutes ago
doc Merge "Enable starting executors in paused mode" 21 minutes ago
etc Add propagate=0 for loggers in logging.conf-sample 5 days ago
playbooks Handle new default of uncompressed job-output 1 month ago
releasenotes/notes Merge "executor: add merge_jobs options to disable gearman merge jobs" 8 hours ago
tests Merge "Revert "Revert "Add the process environment to zuul.conf parser""" 8 hours ago
tools Document js tool installation in scratch doc 2 months ago
web Change colors of various "negative" results in UI 2 weeks ago
zuul Merge "Enable starting executors in paused mode" 21 minutes ago
.coveragerc Revert "Revert "Switch to stestr"" 1 year ago
.dockerignore Add web/node_modules to dockerignore 9 months ago
.gitignore Fix ignored but tracked .keep file 11 months ago
.gitreview OpenDev Migration Patch 7 months ago
.mailmap Fix pep8 E127 violations 7 years ago
.stestr.conf Revert "Revert "Switch to stestr"" 1 year ago
.zuul.yaml Replace tox-py36 by tox-py37 1 month ago
COPYING Update README and add GPL license 1 year ago
Dockerfile Cleanup executor specific requirements 7 months ago
LICENSE Initial commit. 7 years ago manifest: add zuul/ansible and ansible-config.conf 8 months ago
README.rst Support nodes setting 'auto' python-path 2 months ago
TESTING.rst tox: Integrate tox-docker 7 months ago
bindep.txt Update install for buster 3 weeks ago
requirements.txt Don't use urllib3 1.25.4 1 month ago
setup.cfg Cleanup executor specific requirements 7 months ago Partial sync with OpenStack requirements. 6 years ago
test-requirements.txt web: add OpenAPI documentation 5 months ago
tox.ini Merge "Don't install zuul in the bindep tox testenv" 1 month ago



Zuul is a project gating system.

The latest documentation for Zuul v3 is published at:

If you are looking for the Edge routing service named Zuul that is related to Netflix, it can be found here:

If you are looking for the Javascript testing tool named Zuul, it can be found here:

Getting Help

There are two Zuul-related mailing lists:


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


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.


To browse the latest code, see: To clone the latest code, use git clone

Bugs are handled at:!/project/zuul/zuul

Suspected security vulnerabilities are most appreciated if first reported privately following any of the supported mechanisms described at

Code reviews are handled by gerrit at

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.


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 requires Python 3. It does not support Python 2.

Since Zuul uses Ansible to drive CI jobs, Zuul can run tests anywhere Ansible can, including Python 2 environments.