kubernetes/docs/devel
Justin Santa Barbara f9a6ac077e Ubernetes Lite: Volumes can dictate zone scheduling
For AWS EBS, a volume can only be attached to a node in the same AZ.
The scheduler must therefore detect if a volume is being attached to a
pod, and ensure that the pod is scheduled on a node in the same AZ as
the volume.

So that the scheduler need not query the cloud provider every time, and
to support decoupled operation (e.g. bare metal) we tag the volume with
our placement labels.  This is done automatically by means of an
admission controller on AWS when a PersistentVolume is created backed by
an EBS volume.

Support for tagging GCE PVs will follow.

Pods that specify a volume directly (i.e. without using a
PersistentVolumeClaim) will not currently be scheduled correctly (i.e.
they will be scheduled without zone-awareness).
2015-12-31 12:27:01 -05:00
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api_changes.md Merge pull request #18047 from caesarxuchao/munger-tag-new 2015-12-22 10:35:20 -08:00
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scheduler_algorithm.md Ubernetes Lite: Volumes can dictate zone scheduling 2015-12-31 12:27:01 -05:00
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WARNING WARNING WARNING WARNING WARNING

PLEASE NOTE: This document applies to the HEAD of the source tree

If you are using a released version of Kubernetes, you should refer to the docs that go with that version.

The latest release of this document can be found [here](http://releases.k8s.io/release-1.1/docs/devel/README.md).

Documentation for other releases can be found at releases.k8s.io.

Kubernetes Developer Guide

The developer guide is for anyone wanting to either write code which directly accesses the Kubernetes API, or to contribute directly to the Kubernetes project. It assumes some familiarity with concepts in the User Guide and the Cluster Admin Guide.

The process of developing and contributing code to the Kubernetes project

  • On Collaborative Development (collab.md): Info on pull requests and code reviews.

  • GitHub Issues (issues.md): How incoming issues are reviewed and prioritized.

  • Pull Request Process (pull-requests.md): When and why pull requests are closed.

  • Faster PR reviews (faster_reviews.md): How to get faster PR reviews.

  • Getting Recent Builds (getting-builds.md): How to get recent builds including the latest builds that pass CI.

  • Automated Tools (automation.md): Descriptions of the automation that is running on our github repository.

Setting up your dev environment, coding, and debugging

  • Development Guide (development.md): Setting up your development environment.

  • Hunting flaky tests (flaky-tests.md): We have a goal of 99.9% flake free tests. Here's how to run your tests many times.

  • Logging Conventions (logging.md]: Glog levels.

  • Profiling Kubernetes (profiling.md): How to plug in go pprof profiler to Kubernetes.

  • Instrumenting Kubernetes with a new metric (instrumentation.md): How to add a new metrics to the Kubernetes code base.

  • Coding Conventions (coding-conventions.md): Coding style advice for contributors.

Developing against the Kubernetes API

Writing plugins

Building releases

  • Making release notes (making-release-notes.md): Generating release nodes for a new release.

  • Releasing Kubernetes (releasing.md): How to create a Kubernetes release (as in version) and how the version information gets embedded into the built binaries.

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