cosmo-router

packaged by Chainguard

Chainguard Container for cosmo-router

WunderGraph Cosmo Router is a GraphQL federation gateway.

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/cosmo-router: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 cosmo-router image is a drop-in replacement for the upstream ghcr.io/wundergraph/cosmo/router image. As with other Chainguard Containers, the production variant ships only the router and its runtime dependencies, with no shell or package manager, and runs as a non-root user (cosmo-router, UID 65532) rather than as root.

Getting Started

The router serves a federated graph, so it needs a graph configuration. The quickest way to see it running is demo mode, which serves a small built-in graph with no control plane or subgraphs:

docker run --rm -p 3002:3002 \
  -e DEMO_MODE=true \
  -e LISTEN_ADDR=0.0.0.0:3002 \
  cgr.dev/ORGANIZATION/cosmo-router:latest

Once it logs Server initialized and ready to serve requests, check its health and run a query:

curl localhost:3002/health
curl localhost:3002/graphql -H 'Content-Type: application/json' --data '{"query":"{ hello }"}'

For real workloads the router runs either against a Cosmo control plane (using a graph API token) or standalone off a static execution config composed from your subgraphs with the Cosmo CLI (wgc). See the router configuration docs for the full set of options.

Deploying with Helm

The router is typically deployed with the official Cosmo router Helm chart. To use this image as a drop-in, point the chart at it with a values file:

cat > values.yaml <<EOF
image:
  registry: cgr.dev
  repository: ORGANIZATION/cosmo-router
  version: latest
configuration:
  graphApiToken: <your-graph-api-token>
EOF

helm install router oci://ghcr.io/wundergraph/cosmo/helm-charts/router -f values.yaml

See the Cosmo router documentation for configuring the chart, including running off a static execution config instead of a control plane.

Documentation and Resources

• Cosmo Router Documentation
• WunderGraph Cosmo Documentation
• Cosmo GitHub Repository
• Cosmo Router Helm Chart

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:

• 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 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 Libraries — contact 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.