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All posts tagged “Docker”

As a modern, minimal, container-focused operating system, Container Linux by CoreOS strives to deliver the most recent stable versions of the key software needed to run containers: the Docker and rkt container engines, the Linux kernel, systemd, and

Just one month after our Docker Registry v1/v2 support announcement for Quay Hosted, CoreOS is delighted to announce Quay Enterprise v1.14.0. This new release introduces Docker Registry v2 support and makes Quay Enterprise fully backward and forward compatible with both protocols, making Quay the easiest place to keep your containers. Push and pull your images securely with any version of Docker Engine (≥0.10) and enjoy the performance boost that registry v2 delivers.

Since the release of Quay's support for the Docker Registry V2 API, we've received reports of unpredictable client behavior from customers running Docker Engine versions 1.5.0 to 1.8.3. Docker Engines older than 1.5.0 and newer than 1.8.3 are unaffected.

The cause is a bug in the Docker Engine, which is triggered when concurrent pulls are made against Docker registries supporting the Docker Registry V2 APIs.

In our effort to make Quay the easiest place to host your containers, Quay is happy to announce support for the Docker V2 registry protocol, while maintaining full backward and forward compatibility with the existing V1 protocol. Starting today Docker is deprecating push support of clients 1.5 and earlier in Docker Hub, yet rest assured that your existing images will remain fully accessible in Quay, to both old and new versions of Docker.

We are pleased to introduce the newest features in’s enterprise offering. Delivered by CoreOS, is a private hosted and enterprise container registry, ideal for secure hosting of private docker and rkt repositories. New features include OpenStack support, various optimizations and a streamlined release process, which enable easier setup and management of the enterprise registry on premises.

“What makes a cluster a cluster?” - Ask that question of 10 different engineers and you’ll get 10 different answers. Some look at it from a hardware perspective, some see it as a particular set of cloud technologies, and some say it’s the protocols exchanging information on the network.

Today we round up our newest features and shine a spotlight on them. Since joining the CoreOS team, we have been working hard on features to improve the experience. Highlights include squashed images (an experimental feature) for faster downloading, added build features for more control with build automation tools, and improved notification features for better communications within teams.

Update: 494.3.0 wasn't correctly applying this shim, we've addressed this in 494.4.0 which is rolling out now.

This morning we started rolling out 494.4.0 to the stable channel. Among other things, this version updates Docker to 1.3.2, following in the footsteps of our releases to the alpha and beta channels last week.

Today Docker released Docker 1.3.2, immediately after which we began automatically rolling out an OS update. We were able to work with Docker to ensure that the CoreOS update could ship as soon as the Docker patch was released to the public. At the time of this writing, a significant number of CoreOS instances have already been updated.

The ambassador pattern is a novel way to deploy sets of containers that are configured at runtime via the Docker Links feature.

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