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kyverno-cleanup-controller

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Chainguard Container for kyverno-cleanup-controller

Kyverno is a policy engine that allows you to write policies as Kubernetes resources and manage them with familiar tools

Chainguard Containers are regularly-updated, secure-by-default container images.

Download this Container Image

For those with access, this container image is available on cgr.dev:

docker pull cgr.dev/ORGANIZATION/kyverno-cleanup-controller:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Compatibility Notes

Chainguard's kyverno Container Image is comparable to the official kyverno image. However, the Chainguard image contains only the minimum set of tools and dependencies needed to function. Additionally, it uses a different entrypoint, /usr/bin/kyverno, compared to upstream's entrypoint of /ko-app/kyverno.

Getting Started

Chainguard's kyverno Container Image can be deployed using the official Kyverno Helm chart.

Installation with Helm

The recommended way to install Kyverno with Chainguard images is to use a values.yaml file with the official Helm chart:

  1. Create a values.yaml file with the following content:
admissionController:
  initContainer:
    image:
      registry: cgr.dev
      repository: ORGANIZATION/kyvernopre
      tag: latest
  container:
    image:
      registry: cgr.dev
      repository: ORGANIZATION/kyverno
      tag: latest

backgroundController:
  image:
    registry: cgr.dev
    repository: ORGANIZATION/kyverno-background-controller
    tag: latest

cleanupController:
  image:
    registry: cgr.dev
    repository: ORGANIZATION/kyverno-cleanup-controller
    tag: latest

reportsController:
  image:
    registry: cgr.dev
    repository: ORGANIZATION/kyverno-reports-controller
    tag: latest

Be sure to replace ORGANIZATION with the name used for your organization's private repository within the Chainguard registry.

  1. Install Kyverno using the Helm chart with your values file:
# Add the Kyverno Helm repository
helm repo add kyverno https://kyverno.github.io/kyverno/
helm repo update

# Install Kyverno with Chainguard images
helm install kyverno kyverno/kyverno \
  --namespace kyverno \
  --create-namespace \
  --values values.yaml

Verifying the Installation

After installing Kyverno, you can verify it is functioning correctly by creating a simple policy. You can test a validation policy that requires specific labels on Pods:

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: require-labels
spec:
  validationFailureAction: Enforce
  background: true
  rules:
    - name: check-for-labels
      match:
        any:
        - resources:
            kinds:
              - Pod
            namespaces:
              - default
      validate:
        message: "The label 'app.kubernetes.io/name' is required."
        pattern:
          metadata:
            labels:
              app.kubernetes.io/name: "?*"

After applying this policy, try to create a Pod without the required label and verify it is rejected.

Documentation and Resources

For complete documentation and more examples, please refer to the following resources:

What are Chainguard Containers?

Chainguard's free tier of Starter container images are built with Wolfi, our minimal Linux undistro.

All other Chainguard Containers are built with Chainguard OS, Chainguard's minimal Linux operating system designed to produce container images that meet the requirements of a more secure software supply chain.

The main features of Chainguard Containers include:

For cases where you need container images with shells and package managers to build or debug, most Chainguard Containers come paired with a development, or -dev, variant.

In all other cases, including Chainguard Containers tagged as :latest or with a specific version number, the container images include only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager.

Although the -dev container image variants have similar security features as their more minimal versions, they include additional software that is typically not necessary in production environments. We recommend using multi-stage builds to copy artifacts from the -dev variant into a more minimal production image.

Need additional packages?

To improve security, Chainguard Containers include only essential dependencies. Need more packages? Chainguard customers can use Custom Assembly to add packages, either through the Console, chainctl, or API.

To use Custom Assembly in the Chainguard Console: navigate to the image you'd like to customize in your Organization's list of images, and click on the Customize image button at the top of the page.

Learn More

Refer to our Chainguard Containers documentation on Chainguard Academy. Chainguard also offers VMs and Librariescontact us for access.

Trademarks

This software listing is packaged by Chainguard. The trademarks set forth in this offering are owned by their respective companies, and use of them does not imply any affiliation, sponsorship, or endorsement by such companies.

Licenses

Chainguard container images contain software packages that are direct or transitive dependencies. The following licenses were found in the "latest" tag of this image:

  • Apache-2.0

  • GPL-2.0-or-later

  • LGPL-2.1-or-later

  • MIT

  • MPL-2.0

For a complete list of licenses, please refer to this Image's SBOM.

Software license agreement

Compliance

A FIPS validated version of this image is available for FedRAMP compliance. STIG is included with FIPS image.


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