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Sign InCalico is a networking and security solution that enables Kubernetes workloads and non-Kubernetes/legacy workloads to communicate seamlessly and securely.
Chainguard Images are regularly-updated, minimal container images with low-to-zero CVEs.
This image is available on cgr.dev
:
Be sure to replace the ORGANIZATION
placeholder with the name used for your organization's private repository within the Chainguard registry.
There are several ways you can install Calico onto a Kubernetes cluster. This document follows method recommended in the official Calico documentation which involves using the Tigera Calico operator.
After setting up and connecting to the Kubernetes cluster where you want to install Calico, install the Tigera Calico operator and custom resource definitions (CRDs).
ImageSet is a CRD provided by the Tigera operator. It is required to define which images are used for Calico deployments.
Note, we do not pass the registry or image names here, only the image digests. The registry is passed when creating a Calico cluster.
Providing an ImageSet allows you to specify alternative image digests, but it does not allow you to swap in custom image names. If you wish to use images that are named differently, you'll need to first re-tag them.
For example, /some/registry/node-fips:
would need to be re-tagged to
/some/registry/node:
. The digest would be the same for both image tags.
Once the ImageSet is completed, specify the image registry and the image prefix to use.
Our images follow calico-
naming format, i.e calico-node
, do we define an
imagePrefix
.
The combination of these ImageSet
and Installation
CRDs serve as a drop in replacement for Step 2 of the upstream documentation. Together, these correctly rename the Calico images to their cgr.dev
variants.
After creating the CRDs, you can ensure that the pods are running with a command like the following.
If you have a Zendesk account (typically set up for you by your Customer Success Manager) you can reach out to Chainguard's Customer Success team through our Zendesk portal.
Chainguard Images are a collection of container images designed for security and minimalism.
Many Chainguard Images are distroless; they contain only an open-source application and its runtime dependencies. These images do not even contain a shell or package manager. Chainguard Images are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a secure software supply chain.
The main features of Chainguard Images include:
-dev
VariantsAs mentioned previously, Chainguard’s distroless Images have no shell or package manager by default. This is great for security, but sometimes you need these things, especially in builder images. For those cases, most (but not all) Chainguard Images come paired with a -dev
variant which does include a shell and package manager.
Although the -dev
image variants have similar security features as their distroless versions, such as complete SBOMs and signatures, they feature additional software that is typically not necessary in production environments. The general recommendation is to use the -dev
variants only to build the application and then copy all application artifacts into a distroless image, which will result in a final container image that has a minimal attack surface and won’t allow package installations or logins.
That being said, it’s worth noting that -dev
variants of Chainguard Images are completely fine to run in production environments. After all, the -dev
variants are still more secure than many popular container images based on fully-featured operating systems such as Debian and Ubuntu since they carry less software, follow a more frequent patch cadence, and offer attestations for what they include.
To better understand how to work with Chainguard Images, we encourage you to visit Chainguard Academy, our documentation and education platform.
Chainguard Images contain software packages that are direct or transitive dependencies. The following licenses were found in the "latest" version of this image:
( GPL-2.0-or-later
Apache-2.0
BSD-2-Clause
BSD-3-Clause
GCC-exception-3.1
GPL-2.0-only
GPL-2.0-or-later
For a complete list of licenses, please refer to this Image's SBOM.
Software license agreementA FIPS validated version of this image is available for FedRAMP compliance. STIG is included with FIPS image.