The Gatekeeper, or a project gating system
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Zuul c80684fbf7 Merge "Add simple testing for Zuul CLI & REST API" 2 months ago
doc Merge "gitlab - add driver documentation" 2 months ago
etc authentication config: add optional max_validity_time, skew 9 months ago
playbooks Create virtualenvs in series to avoid cache race 2 months ago
releasenotes/notes Merge "Report retried builds via sql reporter." 2 months ago
tests Merge "Add simple testing for Zuul CLI & REST API" 2 months ago
tools Correct syntax to be compatible with mysql8 3 months ago
web Make task errors expandable 3 months ago
zuul Merge "REST API: fix discrepancies between RPC and REST outputs for autohold" 2 months ago
.coveragerc Revert "Revert "Switch to stestr"" 2 years ago
.dockerignore Add web/node_modules to dockerignore 1 year ago
.gitignore Fix ignored but tracked .keep file 1 year 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 Merge "Restore release jobs" 3 months ago
COPYING Update README and add GPL license 2 years ago
Dockerfile Create virtualenvs in series to avoid cache race 2 months ago
LICENSE Initial commit. 8 years ago Optimize canMerge using graphql 6 months ago
README.rst Support nodes setting 'auto' python-path 1 year ago
TESTING.rst Docs: fix stestr run example 8 months ago
bindep.txt Require procps also for dpkg platforms 4 months ago
requirements.txt requirements: add explicit reference to dateutil 3 months ago
setup.cfg Add yappi and objgraph to container image 5 months ago Partial sync with OpenStack requirements. 7 years ago
test-requirements.txt Optimize canMerge using graphql 6 months ago
tox.ini Merge "Add DOCKER_* to passenv" 4 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.