Michael Crosby

What is containerd ?

We have done a few talks in the past on different features of containerd, how it was designed, and some of the problems that we have fixed along the way.  Containerd is used by Docker, Kubernetes CRI, and a few other projects but this is a post for people who may not know what containerd actually does within these platforms.  I would like to do more posts on the featureset and design of containerd in the future but for now, we will start with the basics. I think the container ecosystem can be confusing at times. Especially with the terminology that we use. Whats this? A runtime. And this? A runtime…  containerd as the name implies, not contain nerd as some would like to troll me with, is a container daemon.  It was originally built as an integration point for OCI Continue reading…

Patrick Chanezon

Docker Leads OCI Release of v1.0 Runtime and Image Format Specifications

Today marks an important milestone for the Open Container Initiative (OCI) with the release of the OCI v1.0 runtime and image specifications – a journey that Docker has been central in driving and navigating over the last two years. It has been our goal to provide low-level standards as building blocks for the community, customers and the broader industry. To understand the significance of this milestone, let’s take a look at the history of Docker’s growth and progress in developing industry-standard container technologies. The History of Docker Runtime and Image Donations to the OCI Docker’s image format and container runtime quickly emerged as the de facto standard following its release as an open source project in 2013. We recognized the importance of turning it over to a neutral governance body to fuel innovation and prevent fragmentation in the industry. Working Continue reading…

Stephen Walli

Demystifying the Open Container Initiative (OCI) Specifications

The Open Container Initiative (OCI) announced the completion of the first versions of the container runtime and image specifications this week. The OCI is an effort under the auspices of the Linux Foundation to develop specifications and standards to support container solutions. A lot of effort has gone into the building of these specifications over the past two years. With that in mind, let’s take a look at some of the myths that have arisen over the past two years. Myth: The OCI is a replacement for Docker Standards are important, but they are far from a complete production platform. Take for example, the World Wide Web. It  has evolved over the last 25 years and was built on core dependable standards like TCP/IP, HTTP and HTML. Using TCP/IP as an example, when enterprises coalesced around TCP/IP as a common protocol, Continue reading…

Victor Coisne

Moby Summit LA alongside Open Source Summit North America

Since the Moby Project introduction at DockerCon 2017 in Austin last April, the Moby Community has been hard at work to further define the Moby project, improve its components (runC, containerd, LinuxKit, InfraKit, SwarmKit, Libnetwork and Notary) and fine processes and clear communication channels. All project maintainers are developing these aspects in the open with the support of the community. Contributors are getting involved on GitHub, giving feedback on the Moby Project Discourse forum and asking questions on Slack. Special Interest Groups (SIGs) for the Moby Project components have been formed based on the Kubernetes model for Open Source collaboration. These SIGs ensure a high level of transparency and synchronization between project maintainers and a community of heterogeneous contributors. In addition to these online channels and meetings, the Moby community hosts regular meetups and summits. Check out the videos and slides from the last Continue reading…

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Victor Coisne

Get involved with the Moby Project by attending upcoming Moby Summits!

Last month at DockerCon, we introduced the Moby Project: an open-source project sponsored by Docker to advance the software containerization movement. The idea behind the project is to help the ecosystem take containers mainstream by providing a library of components, a framework for assembling them into custom container-based systems and a place for all container enthusiasts to experiment and exchange ideas. Going forward, Docker will be assembled using Moby, see Moby and Docker or the diagram below for more details. Moby Summit at DockerCon 2017 Knowing that that a good number of maintainers, contributors and advanced Docker users would be attending DockerCon, we decided to organize the first Moby Summit in collaboration with the Cloud Native Computing Foundation (CNCF). The summit was a small collaborative event for container hackers who are actively maintaining, contributing or generally involved or interested in the design and Continue reading…

Justin Cormack

Announcing LinuxKit: A Toolkit for building Secure, Lean and Portable Linux Subsystems

  Last year, one of the most common requests we heard from our users was to bring a Docker-native experience to their platforms. These platforms were many and varied: from cloud platforms such as AWS, Azure, Google Cloud, to server platforms such as Windows Server, desktop platforms that their developers used such as OSX and Windows 10, to mainframes and IoT platforms –  the list went on. We started working on support for these platforms, and we initially shipped Docker for Mac and Docker for Windows, followed by Docker for AWS and Docker for Azure. Most recently, we announced the beta of Docker for GCP. The customizations we applied to make Docker native for each platform have furthered the adoption of the Docker editions. One of the issues we encountered was that for many of these platforms, the users wanted Linuxcontainer Continue reading…

Patrick Chanezon

containerd joins the Cloud Native Computing Foundation

Today, we’re excited to announce that containerd – Docker’s core container runtime – has been accepted by the Technical Oversight Committee (TOC) as an incubating project in the Cloud Native Computing Foundation (CNCF). containerd’s acceptance into the CNCF alongside projects such as Kubernetes, gRPC and Prometheus 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. In the process of spinning containerd out of Docker and contributing it to CNCF there are a few changes that come along with it.  For starters, containerd now has a logo; see below. In addition, we have a new @containerd twitter handle. In the next few days, we’ll be moving the containerd GitHub repository to a separate GitHub organization. Similarly, the containerd slack channel will be moved to separate slack team which will soon available at containerd.slack.com containerd has Continue reading…

Solomon Hykes

Docker to donate containerd to the Cloud Native Computing Foundation

Today, Docker announced its intention to donate the containerd project to the Cloud Native Computing Foundation (CNCF). Back in December 2016, Docker spun out its core container runtime functionality into a standalone component, incorporating it into a separate project called containerd, and announced we would be donating it to a neutral foundation early this year. Today we took a major step forward towards delivering on our commitment to the community by following the Cloud Native Computing Foundation process and presenting a proposal to the CNCF Technical Oversight Committee (TOC) for containerd to become a CNCF project. Given the consensus we have been building with the community, we are hopeful to get a positive affirmation from the TOC before CloudNativeCon/KubeCon later this month.   Over the past 4 years, the adoption of containers with Docker has triggered an unprecedented wave of innovation in our industry: Continue reading…