Rancher Labs' K3s Joins Cloud Native Computing Foundation as Sandbox Project
August 31, 2020

Rancher Labs announced that the Cloud Native Computing Foundation (CNCF) has accepted the company’s lightweight Kubernetes distribution – K3s – as its latest Sandbox project.

K3s was built to allow organizations to run Kubernetes in resource-constrained environments, in IoT devices or at the Edge. K3s joins 33 other early-stage Sandbox projects including Longhorn, a persistent Kubernetes storage solution, which Rancher Labs donated to the CNCF in October 2019.

Since its launch in February 2019, K3s has been downloaded over a million times and is installed, on average, more than 20,000 times every week.

With K3s as a CNCF Sandbox project, the open source community can further experiment and innovate with it – accelerating adoption.

The CNCF Sandbox provides an avenue for technically exciting projects that are beneficial to the cloud-native community and that the CNCF Technical Oversight Committee (TOC) believes warrant experimentation. The Sandbox provides a neutral home to foster collaborative development and is the preferred path for early-stage projects to enter CNCF.

Key features of K3s include:

- Production-grade Kubernetes: K3s is a standards-compliant Kubernetes distribution engineered for mission-critical, production use cases.

- One binary with zero host dependencies: everything necessary to install Kubernetes on any device is included in a single, 40 MB binary. There is no requirement for an external installer like Kubespray, Kubeadm or RKE. With a single command, a single-node K3s cluster can be provisioned or upgraded.

- Simple to add nodes to a cluster: to add nodes to a cluster, admins run a single command on the new node, pointing it to the original server and passing through a secure token.

- Automatic certificate generation: all the certificates needed to establish TLS between the Kubernetes masters and nodes are automatically created when a cluster is launched. Encryption keys for service accounts are also automatically created.

Sheng Liang, co-founder and CEO, Rancher Labs said: "K3s is already benefiting a range of industries – from manufacturing to telecoms – and we are indebted to all those that have contributed to its evolution. By donating K3s to the CNCF, K3s' value will grow, and its adoption will accelerate. I am excited to see what new use cases emerge in the coming months and years."

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