The Gatekeeper, or a project gating system
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Zuul b5f294b225 Merge "Don't process builds not longer in job graph" 2 days ago
doc Add upgrade note about ansible_python_interpreter 5 days ago
etc Add propagate=0 for loggers in logging.conf-sample 1 month ago
playbooks Fix zuul-stream-functional tests 3 weeks ago
releasenotes/notes Merge "Add additional info for executor.merge_jobs release note" 4 days ago
tests Merge "Don't process builds not longer in job graph" 2 days ago
tools enqueue: make trigger deprecated 6 days ago
web Store event id for buildsets in database 1 week ago
zuul Merge "Don't process builds not longer in job graph" 2 days ago
.coveragerc Revert "Revert "Switch to stestr"" 1 year ago
.dockerignore Add web/node_modules to dockerignore 10 months ago
.gitignore Fix ignored but tracked .keep file 1 year ago
.gitreview OpenDev Migration Patch 8 months ago
.mailmap Fix pep8 E127 violations 7 years ago
.stestr.conf Revert "Revert "Switch to stestr"" 1 year ago
.zuul.yaml Support Ansible 2.9 5 days ago
COPYING Update README and add GPL license 1 year ago
Dockerfile Cleanup executor specific requirements 8 months ago
LICENSE Initial commit. 7 years ago manifest: add zuul/ansible and ansible-config.conf 9 months ago
README.rst Support nodes setting 'auto' python-path 2 months ago
TESTING.rst tox: Integrate tox-docker 8 months ago
bindep.txt Update install for buster 1 month ago
requirements.txt Don't use urllib3 1.25.4 2 months ago
setup.cfg Cleanup executor specific requirements 8 months ago Partial sync with OpenStack requirements. 6 years ago
test-requirements.txt web: add OpenAPI documentation 6 months ago
tox.ini Merge "Don't install zuul in the bindep tox testenv" 2 months 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.