The Gatekeeper, or a project gating system
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Albin Vass 1dbcfd5346 bugfix: branches with pattern 'refs/heads/..' fails merge jobs 5 days ago
doc doc: fix timer trigger spelling 2 weeks ago
etc authentication config: add optional max_validity_time, skew 10 months ago
playbooks Use bionic images for zuul-stream-functional tests 1 month ago
releasenotes/notes Add upgrade note to 3.19 regarding check run permissions 3 weeks ago
tests bugfix: branches with pattern 'refs/heads/..' fails merge jobs 5 days ago
tools Update kubic signature 2 weeks ago
web Add redux integration tests for build actions 2 weeks ago
zuul bugfix: branches with pattern 'refs/heads/..' fails merge jobs 5 days ago
.coveragerc Revert "Revert "Switch to stestr"" 2 years ago
.dockerignore Add web/node_modules to dockerignore 1 year ago
.gitignore Revert "Revert "Create zuul/web/static on demand"" 3 months ago
.gitreview OpenDev Migration Patch 1 year ago
.mailmap Fix pep8 E127 violations 8 years ago
.stestr.conf Revert "Revert "Switch to stestr"" 2 years ago
.zuul.yaml Revert "Revert "Update images to use python 3.8"" 3 weeks ago
COPYING Update README and add GPL license 2 years ago
Dockerfile Update kubic signature 2 weeks ago
LICENSE Initial commit. 8 years ago Optimize canMerge using graphql 8 months ago
README.rst Support nodes setting 'auto' python-path 1 year ago
TESTING.rst Docs: fix stestr run example 9 months ago
bindep.txt Fix bindep.txt: clean remaining python3.7 4 weeks ago
reno.yaml Add reno configuration settings 3 months ago
requirements.txt Merge "ConfigItem*Exception : add failure context" 1 month ago
setup.cfg Drop support for python 3.5 1 month ago Partial sync with OpenStack requirements. 7 years ago
test-requirements.txt Optimize canMerge using graphql 8 months ago
tox.ini Add zuul-client testing 4 weeks 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.