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A N N O U N C E M E N T S

containerd joins the Cloud Native Computing

Foundation

Foundation fostering cross-project collaboration and growth of cloud native ecosystem BERLIN

– CloudNativeCon + KubeCon Europe – March 29, 2017 –

The Cloud Native Computing Foundation (CNCF), which is sustaining and integrating open

source technologies to orchestrate containers as part of a microservices architecture, today

announced containerd – Docker’s core container runtime – has been accepted by the Technical

Oversight Committee (TOC) as an incubating project alongside projects Kubernetes, gRPC and

more. Docker’s acceptance into the CNCF comes three months after Docker, with support from

the five largest cloud providers, announced its intent to contribute the project to a neutral

foundation in the first quarter of this year.

“It’s important for CNCF to host foundational technology for cloud native computing,” said Dan

Kohn, Executive Director of the Cloud Native Computing Foundation. “The containerd runtime is

incredibly important to the growth of the overall cloud native ecosystem and uniting it with

Kubernetes and CNCF will bring huge benefits to end user solutions. Container orchestrators

need community-driven container runtimes and we are excited to have containerd which is used

today by everyone running Docker. Becoming a part of CNCF unlocks new opportunities for

broader collaboration within the ecosystem.”

containerd (Con-tay-ner-D) has been extracted from Docker’s container platform and includes

methods for transferring container images, container execution and supervision and low-level

local storage, across both Linux and Windows. containerd is an essential upstream component of

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the Docker platform used by millions of end users and also provides the industry with an open,

stable and extensible base for building non-Docker products and container solutions.

“Our decision to contribute containerd to the CNCF closely follows months of collaboration and

input from thought leaders in the Docker community,” said Solomon Hykes, founder, CTO and

Chief Product Officer at Docker. “Since our announcement in December, we have been

progressing the design of the project with the goal of making it easily embedded into higher

level systems to provide core container capabilities. Our focus has always been on solving users’

problems. By contributing containerd to an open foundation, we can accelerate the rate of

innovation through cross-project collaboration – making the end user the ultimate benefactor of

our joint efforts.”

The contribution of containerd aligns with Docker’s history of making key open source plumbing

projects available to the community. This effort began in 2014 when the company open

sourced libcontainer. Over the past two years, Docker has continued along this path by

making libnetwork, notary, runC (contributed to the Open Container Initiative, which like CNCF,

is part of The Linux Foundation), HyperKit, VPNKit, DataKit, SwarmKit and InfraKit available as

open source projects as well.

containerd is already a key foundation for Kubernetes, as Kubernetes 1.5 runs with Docker 1.10.3

to 1.12.3. There is also strong alignment with other CNCF projects: containerd exposes an API

using gRPC and exposes metrics in the Prometheus format. containerd also fully leverages the

Open Container Initiative’s (OCI) runtime, image format specifications and OCI reference

implementation (runC), and will pursue OCI certification when it is available.

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Figure 1: containerd’s role in the Container Ecosystem

Community consensus leads to technical progress

In the past few months, the containerd team has been active implementing Phase 1 and Phase 2

of the containerd roadmap. Details about the project can be charted in the containerd weekly

development reports posted in the Github project.

At the end of February, Docker hosted the containerd Summit with more than 50 members of

the community from companies including Alibaba, AWS, Google, IBM, Microsoft, Rancher, Red

Hat and VMware. The group gathered to learn more about containerd, get more information on

containerd’s progress and discuss its design. To view the presentations, check out the containerd summit recap blog post: Deep Dive Into Containerd by Michael Crosby, Stephen Day,

Derek McGowan and Mickael Laventure (Docker), Driving Containerd Operations With

GRPC by Phil Estes (IBM) and Containerd and CRI by Tim Hockin (Google).

The target date to finish implementing the containerd 1.0 roadmap is June 2017. To contribute

to containerd, or embed it into a container system, check out the project on GitHub. If you want

to learn more about containerd progress, or discuss its design, join the team in Berlin in March at

KubeCon 2017 for the containerd Salon, or Austin for DockerCon Day 4 Thursday April 20th, as

the Docker Internals Summit morning session will be a containerd summit.

Additional containerd Resources:

Roadmap

Scope table

Architecture document

Draft APIs

Additional CNCF Resources

Learn About CNCF Membership

CNCF blog

Join the CNCF conversation on Slack

About Cloud Native Computing Foundation

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Cloud native computing uses an open source software stack to deploy applications as

microservices, packaging each part into its own container, and dynamically orchestrating those

containers to optimize resource utilization. The Cloud Native Computing Foundation (CNCF)

hosts critical components of those software stacks including Kubernetes, Fluentd, Linkerd,

Prometheus, OpenTracing, gRPC, CoreDNS, containerd, and rkt; brings together the industry’s

top developers, end users, and vendors; and serves as a neutral home for collaboration. CNCF is

part of The Linux Foundation, a nonprofit organization. For more information about CNCF,

please visit: https://www.cncf.io/.

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Media Contact

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