Chainguard Container for metrics-server-fips

Metrics Server is a Kubernetes component that collects and provides resource usage metrics (CPU, memory) for nodes and pods.

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/metrics-server-fips:latest

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

Compatibility Notes

The Chainguard image for metrics server is comparable to the original, used by the supported helm chart.

Our user defaults to running as user 65532, whereas the original runs as 65534. In both cases these are non-root users. Similar to the upstream image, our image does not contain a shell or a package manager, and only the minimum set of tools and dependencies needed to function.

Getting Started

The Chainguard metrics server image, can be deployed using the following helm chart.

Add the helm repository:

helm repo add metrics-server https://kubernetes-sigs.github.io/metrics-server/
helm repo update

Create a values.yaml, specifying the Chainguard image:

# values.yaml
image:
  repository: cgr.dev/ORGANIZATION/metrics-server-fips
  tag: latest

Deploy using helm:

helm install metrics-server metrics-server/metrics-server -f values.yaml

A few minutes after successful deployment, you should see metrics begin to be published, example:

kubectl top node
NAME                 CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%
control-plane   144m         1%     623Mi           2%

If validating this image in a local 'kind' or 'k3d' cluster, you may need to disable tls, by setting 'args: ["--kubelet-insecure-tls"]' in values.yaml. Do not set this flag on a production environment.

Documentation and Resources

For more information on how to deploy and configure metrics server, please refer to the GitHub project 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.

Learn More

To better understand how to work with Chainguard Containers, please visit Chainguard Academy and Chainguard Courses.

In addition to Containers, Chainguard offers VMs and Libraries. Contact Chainguard to access additional products.

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.