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Sign UpA FIPS-compliant Flannel image for Kubernetes. FIPS-compliant Flannel is a network fabric for Kubernetes, providing a way to manage network configurations across a cluster.
Chainguard Containers are regularly-updated, secure-by-default container images.
For those with access, this container 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.
This image is comparable to the upstream Flannel image. Switching to the Chainguard image should not require any changes to your existing setup.
Note that Chainguard's flannel-fips image runs as root by default, which is required for network operations.
The flannel-fips Chainguard Image ships with a validated redistribution of the OpenSSL's FIPS provider module. For more on FIPS support in Chainguard Images, consult the guide on FIPS-enabled Chainguard Images on Chainguard Academy.
WireGuard backend cannot be supported in the flannel-fips image because WireGuard's cryptographic implementations do not comply with FIPS 140-2/140-3 requirements. WireGuard uses modern cryptographic primitives (ChaCha20, Poly1305, Curve25519) that are not included in the FIPS-approved algorithms list. For FIPS-compliant environments, use alternative backends like VXLAN, host-gw, or IPSec which can use FIPS-validated cryptographic modules.
Important: The Flannel Fips image runs as root by default, which is required for network operations.
To deploy the Chainguard Flannel image with Helm, first add the Flannel Helm repository:
Next create a values file. The following is a minimal example:
Finally, install Flannel. This example assumes the values file is named values.yaml
:
For troubleshooting, you can use the -dev
variant which includes additional tools:
For more information about Flannel, refer to the following resources:
For FIPS-specific information:
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.
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.
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.
Chainguard container 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 agreementThis is a FIPS validated image for FedRAMP compliance.
This image is STIG hardened and scanned against the DISA General Purpose Operating System SRG with reports available.
Learn more about STIGsGet started with STIGs