open-policy-agent/gatekeeper

🐊 Policy Controller for Kubernetes

Go

4,297

2,310 commits

updated Oct 12, 2026

See the code

README

Gatekeeper

Static Badge

How is Gatekeeper different from OPA?

Compared to using OPA with its sidecar kube-mgmt (aka Gatekeeper v1.0), Gatekeeper introduces the following functionality:

  • An extensible, parameterized policy library
  • Native Kubernetes CRDs for instantiating the policy library (aka "constraints")
  • Native Kubernetes CRDs for extending the policy library (aka "constraint templates")
  • Native Kubernetes CRDs for mutation support
  • Audit functionality
  • External data support

Getting started

Check out the installation instructions to deploy Gatekeeper components to your Kubernetes cluster.

Documentation

Please see the Gatekeeper website for more in-depth information.

Policy Library

See the Gatekeeper policy library for a collection of constraint templates and sample constraints that you can use with Gatekeeper.

Community & Contributing

Please refer to Gatekeeper's contribution guide to find out how you can help.

Code of conduct

This project is governed by the CNCF Code of conduct.

Security

For details on how to report vulnerabilities and security release process, please refer to Gatekeeper Security for more information.

admission
cncf
gatekeeper
hacktoberfest
kubernetes
mutation
opa
policy
policy-engine
security
validation

open-policy-agent/gatekeeper

🐊 Policy Controller for Kubernetes

Go

4,297

2,310 commits

updated Oct 12, 2026

See the code

README

Gatekeeper

Static Badge

How is Gatekeeper different from OPA?

Compared to using OPA with its sidecar kube-mgmt (aka Gatekeeper v1.0), Gatekeeper introduces the following functionality:

  • An extensible, parameterized policy library
  • Native Kubernetes CRDs for instantiating the policy library (aka "constraints")
  • Native Kubernetes CRDs for extending the policy library (aka "constraint templates")
  • Native Kubernetes CRDs for mutation support
  • Audit functionality
  • External data support

Getting started

Check out the installation instructions to deploy Gatekeeper components to your Kubernetes cluster.

Documentation

Please see the Gatekeeper website for more in-depth information.

Policy Library

See the Gatekeeper policy library for a collection of constraint templates and sample constraints that you can use with Gatekeeper.

Community & Contributing

Please refer to Gatekeeper's contribution guide to find out how you can help.

Code of conduct

This project is governed by the CNCF Code of conduct.

Security

For details on how to report vulnerabilities and security release process, please refer to Gatekeeper Security for more information.

admission
cncf
gatekeeper
hacktoberfest
kubernetes
mutation
opa
policy
policy-engine
security
validation

Project health

Overall

6.6/10

Maintained

10/10

Code review

10/10

Contributors

10/10
OpenSSF Scorecard

Latest release

v3.23.1 · Aug 27, 2026

Releases this year

7

Significant stargazers

(top 24 of 58)

Pengfei Ni

2,781 followers · starred Oct 2018

Andy Lindeman

306 followers · starred Aug 2019

Matt Boersma

182 followers · starred May 2019

Tim Allclair

241 followers · starred Jul 2020