The Gatekeeper, or a project gating system
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Zuul b3b0c213a7 Merge "Don't use --verbose with yarn" 3 months ago
doc Merge "Add TCP keepalive to gitlab" 4 months ago
etc Remove time database 4 months ago
playbooks Merge "Always report the build page" 6 months ago
releasenotes/notes Add reno about zk disconnect thread fix 3 months ago
tests Merge "Add addtional checks to key deletion testing" 3 months ago
tools Don't use --verbose with yarn 3 months ago
web Merge "Handle long strings in build/buildsets tables" 4 months ago
zuul Use a ThreadPoolExecutor for kazoo callbacks 3 months ago
.coveragerc Revert "Revert "Switch to stestr"" 4 years ago
.dockerignore Add web/node_modules to dockerignore 3 years ago
.gitignore Use ZooKeeper TLS in tests 11 months ago
.gitreview OpenDev Migration Patch 3 years ago
.mailmap Fix pep8 E127 violations 9 years ago
.stestr.conf Revert "Revert "Switch to stestr"" 4 years ago
.zuul.yaml Increase unit test job timeout to 90 minutes 7 months ago
COPYING Update README and add GPL license 4 years ago
Dockerfile Build Zuul's docker images on Bullseye 3 months ago
LICENSE Initial commit. 10 years ago Optimize canMerge using graphql 2 years ago
README.rst Support nodes setting 'auto' python-path 2 years ago
TESTING.rst Docs: fix stestr run example 2 years ago
bindep.txt Update bindep for debian bullseye 5 months ago
reno.yaml Add reno configuration settings 2 years ago
requirements.txt Pin gear < 0.16.0 6 months ago
setup.cfg Merge "Include database requirements by default" 11 months ago Partial sync with OpenStack requirements. 8 years ago
test-requirements.txt github: more complete mocking for app setup 4 months ago
tox.ini Prepare for SQLAlchemy 2.0 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.