The Gatekeeper, or a project gating system
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Zuul f27674bfc6 Merge "Prune git tags on fetch" 3 months ago
doc Document zuul-executor graceful 3 months ago
etc authentication config: add optional max_validity_time, skew 1 year ago
playbooks Remove zuul-migrate 3 months ago
releasenotes/notes Merge "Move queue from pipeline to project" 3 months ago
tests Merge "Prune git tags on fetch" 3 months ago
tools Prepare Zookeeper for scale-out scheduler 3 months ago
web Update react-json-view 3 months ago
zuul Merge "Prune git tags on fetch" 3 months ago
.coveragerc Revert "Revert "Switch to stestr"" 3 years ago
.dockerignore Add web/node_modules to dockerignore 2 years ago
.gitignore Revert "Revert "Create zuul/web/static on demand"" 11 months ago
.gitreview OpenDev Migration Patch 2 years ago
.mailmap Fix pep8 E127 violations 9 years ago
.stestr.conf Revert "Revert "Switch to stestr"" 3 years ago
.zuul.yaml Remove zuul-migrate 3 months ago
COPYING Update README and add GPL license 3 years ago
Dockerfile Noop change to Dockerfile to trigger image builds 3 months ago
LICENSE Initial commit. 9 years ago Optimize canMerge using graphql 1 year ago
README.rst Support nodes setting 'auto' python-path 2 years ago
TESTING.rst Docs: fix stestr run example 1 year ago
bindep.txt Fix bindep.txt: clean remaining python3.7 8 months ago
reno.yaml Add reno configuration settings 10 months ago
requirements.txt Merge "Bump pyjwt to 2.0.0" 4 months ago
setup.cfg Add python-logstash-async to container images 3 months ago Partial sync with OpenStack requirements. 8 years ago
test-requirements.txt Optimize canMerge using graphql 1 year ago
tox.ini Decouple mypy from tox 5 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.