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Chainguard Container for haproxy

A minimal haproxy base image rebuilt every night from source.

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/haproxy: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 HAProxy container image is a minimal image that comes in two variants: a -slim version that only contains the haproxy binary, as well as a regular version that contains a docker-entrypoint.sh script that is compatible with the external docker-library/haproxy image for use with Helm charts or established Docker based deployments.

Getting Started

Similar to the docker-library/haproxy container image, this image does not come with any default configuration.

Let say you have a haproxy.cfg config file in the current working directory. To test that configuration file, you can run the following command:

docker run -it --rm -v "$(pwd):/etc/haproxy" --name haproxy-syntax-check cgr.dev/ORGANIZATION/haproxy haproxy -c -f /etc/haproxy/haproxy.cfg

In order for the container to work, you need to mount your custom haproxy.cfg file in the container. The following example runs HAProxy with a custom configuration file:

docker run -it --rm -v "$(pwd):/etc/haproxy" cgr.dev/ORGANIZATION/haproxy haproxy -f /etc/haproxy/haproxy.cfg

Helm install

When installing in Kubernetes, securityContexts that drop [ "ALL" ] capabilities interfere with the setcap privileged haproxy. In order to support Kubernetes based installs which default to dropping ALL capabilities, the necessary modifications must be made to add back NET_ADMIN capabilities.

For example, in the ha-redis chart used by argocd, the values.yaml becomes:

# values.yaml
haproxy:
  enabled: true
  containerSecurityContext:
    capabilities:
      add:
        - NET_BIND_SERVICE

Note on adding users

By default, the Chainguard HAProxy container image runs as the haproxy user and group, with a UID and GID of 65532. You could represent this in an haproxy.cfg file as follows:

global
  user  haproxy
  group haproxy

In the Kubernetes security context, this information might look like this:

securityContext:
  runAsUser: 65532
  runAsGroup: 65532

If you add a user, make sure that you use the correct matching user in your haproxy.cfg file. If the user listed in your haproxy.cfg file doesn't match what's in the Kubernetes security context, it will result in errors.

Documentation and Resources

Please refer to the HAProxy documentation for more information on configuring HAProxy for your needs.

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:

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.

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

  • BSD-2-Clause

  • BSD-3-Clause

  • GCC-exception-3.1

  • GPL-2.0-only

  • GPL-2.0-or-later

  • GPL-3.0-or-later

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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