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First off, Happy SysAdmin Day. We think we have a pretty good SysAdmin surprise in store for you today as we are announcing the CoreOS stable release channel. Starting today, you can begin running CoreOS in production. This version is the most tested, secure and reliable version available for users wanting to run CoreOS. This is a huge milestone for us. Since our first alpha release in August 2013:

Edit: The most up to date Kubernetes + CoreOS guide can be found on the Kubernetes GitHub project.

This post is not kept up to date with the latest developments! The latest documentation can be found at this GitHub repository:…

CoreOS has a rapidly incrementing version, 197.0.0, 247.0.0, and so on. It is a little known fact, but the version represents the number of days since the CoreOS epoch on July 1, 2013. And we hope to make 365.0.0 a particularly special release. Over the next week this release will go through our alpha and beta channels and, if all goes well, it will be the first version to be promoted to stable. So, watch along with us in the release channel to see if this is the one!

Earlier this morning at Structure, Rackspace announced OnMetal, their API-driven, single-tenant infrastructure-as-a-service offering. We are excited to announce that CoreOS will be available at launch!

Just a few hours after the Docker team announced Docker 1.0, CoreOS shipped the update to all users on the alpha channel. If you are using CoreOS Alpha with automatic updates enabled, you were moved to Docker 1.0 seamlessly. The recent Docker exploit is just a small example of a long list of vulnerabilities that have plagued server software since it has existed, and why the CoreOS model is extremely important.

At our inaugural meetup here in San Francisco, our host Geekdom SF, was kind enough to film and edit our talks for your viewing pleasure. We know many of you have been asking about the talks so without further ado here are the talks in all their glory.

CoreOS: Anatomy of a CoreOS Update

Presented by Brian Redbeard Harrington

Join us for our first CoreOS meetup Tuesday, June 3rd at the San Francisco Geekdom meeting space. Come with your questions queued up and ready to learn as we'll be hosting two separate presentations geared at both beginners and advanced users.

Anatomy of a CoreOS update, a look behind the curtain of your update process

Brian Harrington

Today we're excited to announce that official CoreOS images are available on Google Compute Engine. This means it's now even easier to spin up a CoreOS cluster on GCE using the API or from the command line. Adding an instance is as simple as:

The etcd team has been focused on making it easier to scale and manage larger clusters, and is happy to announce a release with features to help: etcd v0.4.0. This release is an important step in our road to 1.0. (If you are new to etcd, our getting started guide can give you a quick overview of the project).

Update: Vulcand has been updated since this post was written. Jump to for more info. You can follow the concepts of this post, but the commands are no longer up to date.

Running a distributed system across many machines requires a sophisticated load balancing mechanism that can reconfigure itself quickly and reliably.

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