kubernetes/docs
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
..
admin Ubernetes Lite: Volumes can dictate zone scheduling 2015-12-31 12:27:01 -05:00
api-reference Add support for flex volume. Flex volume adds support for thirdparty(vendor) 2015-12-23 14:11:38 -08:00
design Merge pull request #18047 from caesarxuchao/munger-tag-new 2015-12-22 10:35:20 -08:00
devel Ubernetes Lite: Volumes can dictate zone scheduling 2015-12-31 12:27:01 -05:00
getting-started-guides docs/rkt: Update the docs to reflect the requirement of rkt api service. 2015-12-23 13:58:03 -08:00
man/man1 Add the client side bits of kubectl export 2015-12-22 10:41:59 -08:00
proposals Merge pull request #18047 from caesarxuchao/munger-tag-new 2015-12-22 10:35:20 -08:00
user-guide Merge pull request #18101 from brendandburns/kubectl6 2015-12-29 12:43:42 -08:00
api.md Clean up standalone conversion tool 2015-12-23 10:31:08 +08:00
README.md run hack/update-generated-docs.sh 2015-12-21 10:41:30 -08:00
reporting-security-issues.md run hack/update-generated-docs.sh 2015-12-21 10:41:30 -08:00
roadmap.md run hack/update-generated-docs.sh 2015-12-21 10:41:30 -08:00
troubleshooting.md run hack/update-generated-docs.sh 2015-12-21 10:41:30 -08:00
warning.png Add an image to unversioned warnings 2015-07-14 15:28:59 -07:00
whatisk8s.md run hack/update-generated-docs.sh 2015-12-21 10:41:30 -08:00

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/README.md).

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

Kubernetes Documentation: releases.k8s.io/HEAD

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