Chainguard Container for pgpool2

Middleware that works between PostgreSQL servers and a PostgreSQL database client.

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/pgpool2: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 Steampipe Image is meant to provide the pgpool2 package in a container. It currently does not have an external counterpart image which is actively maintained. However, the image is similar to the discontinued upstream image for pgpool-II. Like most other Chainguard Images, this image has few-to-zero CVEs and does not run as the root user.

Note: Pgpool2 provides md5 password encryption support via its built-in pg_md5 utility, and does not use system OpenSSL for this purpose.

Getting Started

Pgpool-II on Kubernetes

Prerequisites: Kubernetes Cluster, kubectl, PostgreSQL Operator and a PostgreSQL Cluster

Configuration: There are two ways you can configure Pgpool-II.

• Using environment variables
• Using a ConfigMap

Pgpool-II deployment example:

# Download the Pgpool-II deployment manifest
curl -O https://raw.githubusercontent.com/pgpool/pgpool2_on_k8s/master/pgpool-deploy-metrics.yaml

# Update the deployment to use Chainguard's pgpool2 image
sed -i 's|image: pgpool/pgpool2$|image: cgr.dev/ORGANIZATION/pgpool2:latest|' pgpool-deploy-metrics.yaml

# Edit parametes like POSTGRES* and PGPOOL* variables according to your configuration

# Apply the modified deployment
kubectl apply -f pgpool-deploy-metrics.yaml

Verify Deployment:

kubectl get pods -l app=pgpool

Connect via Pgpool-II: Update your application to connect through the Pgpool-II service endpoint instead of directly to PostgreSQL.

Documentation and Resources

For more information, please refer to the official documentation for pgpool2 project. In case you're looking for sample deployment instructions, please refer to Pgpool-II on Kubernetes

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.