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Sign UpProduction-Grade Container Scheduling and Management
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.
Kubernetes, often referred to as K8s, is an open-source platform that automates the deployment, scaling, and operation of containerized applications. It provides key features such as service discovery, load balancing, storage orchestration, and self-healing.
Kubernetes builds upon years of experience running production workloads at scale within Google, leveraging concepts from the Borg system. It has since grown into a robust, production-grade system hosted by the Cloud Native Computing Foundation (CNCF).
For more information on how Kubernetes works and the community behind it, refer to:
This image includes the following core Kubernetes components:
Schedules pods to run on specific nodes based on resource availability and constraints. For more info
Manages network connectivity and load balancing between services. For more info
Runs various controllers that handle node management, pod replication, and more. For more info
The central management entity that exposes the Kubernetes API, handles requests, and processes updates. For more info
Each component plays a critical role in managing the lifecycle and operation of a Kubernetes cluster. These components work together to ensure scalability, availability, and reliability of containerized applications.
Using the Chainguard kubernetes-pause
image requires changing the containerd configuration on the nodes. If you've set up SSH access to the underlying nodes of the cluster, then you can edit the containerd configuration file directly.
If you don't have access to the nodes then you can use a plugin called kubectl-node-shell
In the containerd configuration on the node, the default sandbox_image
needs to be replaced with the Chainguard pause image. Use the editor of your choice to replace the default pause image with the Chainguard pause image:
After this, restart the containerd service:
Checking the list of containers using the ctr
command will show the pause container with the Chainguard pause image:
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:
Apache-2.0
LGPL-2.1-or-later
MIT
MPL-2.0
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.