The Gatekeeper, or a project gating system
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Clark Boylan e255397eb4 Simplify FakeGithubClient and FakeGithubSession 2 years ago
doc doc fix: containes -> contains 2 years ago
etc authentication config: add optional max_validity_time, skew 2 years ago
playbooks Use ensure-* roles 2 years ago
releasenotes/notes Merge "Filter secret ZUUL_ env variables from ansible env" 2 years ago
tests Simplify FakeGithubClient and FakeGithubSession 2 years ago
tools Merge "Add TLS support for ZooKeeper" 2 years ago
web Improve display of stdout/stderr task errors 2 years ago
zuul Bump mypy for py3.8 support 2 years ago
.coveragerc Revert "Revert "Switch to stestr"" 4 years ago
.dockerignore Add web/node_modules to dockerignore 3 years ago
.gitignore Fix ignored but tracked .keep file 4 years ago
.gitreview OpenDev Migration Patch 3 years ago
.mailmap Fix pep8 E127 violations 10 years ago
.stestr.conf Revert "Revert "Switch to stestr"" 4 years ago
.zuul.yaml Merge "Move zuul-quick-start requires to pipeline and reparent" 2 years ago
COPYING Update README and add GPL license 4 years ago
Dockerfile Remove stretch-backports from docker build 2 years ago
LICENSE Initial commit. 10 years ago Optimize canMerge using graphql 2 years ago
README.rst Support nodes setting 'auto' python-path 3 years ago
TESTING.rst Docs: fix stestr run example 2 years ago
bindep.txt Install unzip on all platforms 2 years ago
requirements.txt Declare support for Python3.8 2 years ago
setup.cfg Add yappi and objgraph to container image 2 years ago Partial sync with OpenStack requirements. 9 years ago
test-requirements.txt Optimize canMerge using graphql 2 years ago
tox.ini Bump mypy for py3.8 support 2 years 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.