policy-as-code-end-to-end-enforcement

name	policy-as-code-end-to-end-enforcement
description	>- Use when this capability is needed.

Policy-as-Code: End-to-End Enforcement

When to Use This Skill

Policy-as-Code ensures compliance through automated enforcement at three critical checkpoints:

graph LR
    A[Local Development] -->|Push Code| B[CI Pipeline]
    B -->|Deploy| C[Runtime Admission]

    A -->|policy-platform container| A1[Kyverno CLI]
    B -->|policy-platform container| B1[Kyverno CLI]
    C -->|Kyverno controller| C1[Admission Webhook]

    %% Ghostty Hardcore Theme
    style A fill:#a7e22e,color:#1b1d1e
    style B fill:#a7e22e,color:#1b1d1e
    style C fill:#65d9ef,color:#1b1d1e

The Core Principle: Same policies, three enforcement points. Zero gaps.

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Prerequisites

• Kubernetes cluster (for runtime deployment)
• Container runtime (Docker/Podman for local dev)
• CI platform (GitHub Actions, Bitbucket Pipelines, GitLab CI)
• Basic Kyverno knowledge (see Kyverno guide)

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Implementation

Start Local, Scale Up

Test policies locally first. Fix violations in seconds, not hours. Only after local validation works should you move to CI integration and runtime deployment.

Step 1: Run policies locally

docker run policy-platform:latest \
  kyverno apply /repos/security-policy/ \
  --resource deployment.yaml

Step 2: Add to CI pipeline

- name: Policy Check
  image: policy-platform:latest
  script:
    - kyverno apply /repos/security-policy/ --resource app.yaml

Step 3: Deploy Kyverno to cluster

helm install kyverno kyverno/kyverno -f kyverno-values.yaml
helm install policy-reporter policy-reporter/policy-reporter

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Key Principles

1. Single Source of Truth

Policies live in Git repositories. Everything derives from there.

2. Container-Based Distribution

One container runs everywhere. No "works on my machine."

3. Progressive Enforcement

Local (warn) → CI (fail) → Runtime (block).

4. Separation of Concerns

• Policy repos: Define rules
• Policy-platform: Package and distribute
• Kyverno: Enforce at runtime

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Examples

See examples.md for code examples.

Full Reference

See reference.md for complete documentation.

Related Patterns

• SDLC Hardening
• Kyverno Implementation
• Pre-commit Hooks
• CI/CD Patterns

References

• Source Documentation
• AEL Enforce

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