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Linux Top 3: CoreOS, Docker 1.0 and OpenStack Summit

  • May 11, 2014
  • By Sean Michael Kerner

1) CoreOS

The CoreOS Linux project debuted its first beta release last week. CoreOS aims to deliver a thin operating system that is optimized to deliver Docker containers for virtualized applications. Beyond just being a thin operating system, CoreOS has taken steps to enable and provide high-availability.

CoreOS is intended to be deployed in a cluster, meaning there is now single point of failure. There is also a unique double-buffer approach for each node to enable system updates.

"With the double-buffer approach we can download a system update, apply it without making any modification to the running system," Alex Polvi, CEO of CoreOS said. "You do need to reboot to get the new version, but the old root file system is still there in case anything goes wrong with the update."

CoreOS has a rolling update model, which makes the double-buffer approach even more valuable. With the new Beta release, technically the project is not branching two release channels, one alpha and one beta.

At the core of CoreOS, the Linux distribution is built with tooling originally built by Google for the ChromeOS distribution in use on Chromebook notebooks.

2) Docker Nears 1.0

Docker is at the core of CoreOS and it's also once of the most hyped open-source technologies in Linux today. Docker however has not yet reach the magical 1.0 release yet - though that is coming soon.

The first release candidate for Docker 1.0 debuted last week with the 0.11 release. Docker is on a very rapid and agile release cycle with new milestone builds debuting every month at this point. The Docker 1.0 release will not necessarily add any new features on top of the existing Docker base, but rather has the focus of being a stable release on which enterprises can rely for full production deployments.

3) OpenStack Summit

A key use case for Docker is the cloud, which is also rapidly becomming one of the primary use cases for new Linux workloads as well.

This week, the OpenStack Summit takes place in Atlanta and all the major Linux distribution vendors will be on site to ply their wares.

Ubuntu Linux founder, Mark Shuttlworth is set to deliver a keynote on the second day of the event, which is always a highly anticipated event. At past OpenStack Summit events, Shuttleworth has done live on-stage updates of running OpenStack clusters successfully in real time.

Sean Michael Kerner is a senior editor at LinuxPlanet and InternetNews.com. Follow him on Twitter @TechJournalist

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