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Gatekeeper project preview
SecurityAlternative to KyvernoAlternative to Datadog Cloud SecurityAlternative to Styra DAS

Gatekeeper

Policy Controller for Kubernetes providing validating and mutating webhook enforcement via OPA.

View on GitHub Visit website
LicenseApache-2.0
GitHub stars4.2k
Last commit1 weeks ago
Tags5 topics
Opa GatekeeperRego PoliciesK8s Admission ControllerSecurityCompliance Enforcement
Overview

Why consider Gatekeeper?

Gatekeeper is an open-source Kubernetes validating and mutating admission controller webhook written in Go by the Open Policy Agent (OPA) project. It enforces organization-wide compliance policies (restricting root containers, validating labels, enforcing resource limits) powered by OPA Rego.

Guided learning

Learn Gatekeeper by building

Practical setup notes, real use cases, and copy-ready examples in one focused guide.

1 min read 2 sections
In this guide2 sections

Overview of Gatekeeper

Gatekeeper intercepts Kubernetes API server requests and validates compliance against OPA ConstraintTemplates.

Quickstart

bash
1kubectl apply -f https://raw.githubusercontent.com/open-policy-agent/gatekeeper/v3.17.0/deploy/gatekeeper.yaml

Gatekeeper is licensed under the Apache License Version 2.0.

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Gatekeeper FAQs

Gatekeeper is listed as a Security tool on TiloBox. Review the overview, features, and official documentation on this page to decide whether it solves your specific workflow.

Start with the project's GitHub repository and official website for supported installation and deployment instructions. Test the setup with representative data or a small project before rolling it out more widely.

Gatekeeper is listed under the Apache-2.0 license. Read the complete license text and the project's notices before using, modifying, or distributing the software.

Production readiness depends on your requirements. Review maintenance activity, security practices, documentation, backup and upgrade procedures, and compatibility with your stack; then validate it in a non-production environment.

Gatekeeper is listed as an alternative to Kyverno. Compare the core workflow, deployment model, integrations, and licensing against your must-have requirements before switching.