Chainguard Container for kyverno-policy-reporter

Monitoring and Observability Tool for the PolicyReport CRD with an optional UI.

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-policy-reporter: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-policy-reporter Container Image is comparable to the official kyverno policy-reporter 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/policyreporter run, compared to upstream's entrypoint of /app/policyreporter run.

Getting Started

To install Chainguard's kyverno-policy-reporter container image on your Kubernetes cluster, you can use the official image's Helm chart.

You can override the image by setting the image.tag,image.repository and image.tag values in a values.yaml file.

image:
  registry: cgr.dev
  repository: ORGANIZATION/kyverno-policy-reporter
  tag: latest

You can then invoke the following command to install kyverno-policy-reporter in your cluster.

helm repo add policy-reporter https://kyverno.github.io/policy-reporter
helm install policy-reporter policy-reporter/policy-reporter -f values.yaml --create-namespace -n policy-reporter

Once you have the reporter up and running in your cluster, you can go through the following steps to test out the functionality:

Apply a ClusterPolicy requiring pods to have an app label

cat <<EOF | kubectl apply -f -
apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: require-label
spec:
  rules:
    - name: check-label
      match:
        resources:
          kinds:
            - Pod
      validate:
        failureAction: Audit
        message: "Labels 'app' is required on every Pod."
        pattern:
          metadata:
            labels:
              app: "?*"
EOF

Create a pod that violates the policy

cat <<EOF | kubectl apply -n test-policyreporter -f -
apiVersion: v1
kind: Pod
metadata:
  name: violate-pod
spec:
  containers:
    - name: nginx
      image: nginx:1.14.2
EOF

You should now be able to see a policy report resource created in the test-policyreporter namespace:

kubectl get policyreports -n test-policyreporter

Documentation and Resources

• Official Kyverno Policy Reporter Documentation
• Official Kyverno Documentation

What are Chainguard Containers?

Chainguard Containers are minimal container images that are secure by default.

In many cases, the Chainguard Containers tagged as :latest contain only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager. Chainguard Containers are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a more secure software supply chain.

The main features of Chainguard Containers include:

• Minimal design, without unnecessary software bloat
• Daily builds to ensure container images are up-to-date with available security patches
• High quality build-time SBOMs attesting to the provenance of all artifacts within the image
• Verifiable signatures provided by Sigstore
• Reproducible builds with Cosign and apko (read more about reproducibility)

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

Although the -dev container image variants have similar security features as their more minimal versions, they feature additional software that is typically not necessary in production environments. We recommend using multi-stage builds to leverage the -dev variants, copying application artifacts into a final minimal container that offers a reduced attack surface that won’t allow package installations or logins.

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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.