Kubernetes

Scheduling the Future at Cloud Scale

Kubernetes

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As remarkable as Docker containers are, they still need to be heavily scheduled and orchestrated to run efficiently, and seamlessly replaced and re-balanced when they fail. It’s a big job, well beyond the abilities of Chef, Puppet, and similar tools. This O'Reilly report introduces you to Kubernetes, a cluster management system from Google that’s capable of scheduling and launching roughly 7,000 containers a second.

Dave Rensin, who directs Global Cloud Support and Services at Google, explains piece-by-piece how this system works. If you’ve created at least one simple container with Docker, you’ll understand how to get started with Kubernetes by using one of several options.

  • Examine pods, a collection of containers bundled and scheduled together
  • Run through volumes, the filesystems your container can see and use
  • Create and organize pods with labels and annotations
  • Use replication controllers to manage replicas: multiple copies of a pod
  • Set up services, long-lived endpoints that identify a set of pods in your cluster
  • Get started using your own servers, VMs from the public cloud, or a managed offering from a major cloud provider
  • Find examples on GitHub of Kubernetes in use, including WordPress and Guestbook

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David Rensin

David Rensin

Dave started his career designing and developing software applications and information systems to carry sensitive data over both wired and wireless networks for clients such as the U.S. Army, the Treasury Department, the Secret Service, and the National Guard Bureau. For his work, Dave received a civilian commendation from the U.S. Army. In 1997, Dave founded one of the first business divisions in the U.S. to develop custom applications for the Palm. His success at developing a solution for synching data between handheld devices and corporate back-end systems led to the creation of RiverBed Technologies in 1998. Riverbed's Scout™ software was eventually licensed to nearly every major manufacturer of handheld devices in the world. In 2000, Dave was named a Mobile Innovator of the Year by Mobile Computing Magazine. In 2000, Riverbed was acquired by Aether Systems for over $1 billion. Dave then joined Omnisky as Chief Product Officer, where he designed and built the company's products to provide wireless e-mail and Internet services to mobile devices. The Omnisky service offering received an Editor's Choice award from PC Magazine. In 2003, Dave struck out on his own and co-founded Reality Mobile. Today, Dave continues to provide vision and planning for deploying cutting-edge mobile computing products to solve real-world problems acutely felt by Reality Mobile’s customers.