mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-30 21:30:16 +00:00
53 lines
2.3 KiB
Markdown
53 lines
2.3 KiB
Markdown
<!-- BEGIN MUNGE: UNVERSIONED_WARNING -->
|
|
|
|
<!-- BEGIN STRIP_FOR_RELEASE -->
|
|
|
|
<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
|
|
width="25" height="25">
|
|
<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
|
|
width="25" height="25">
|
|
<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
|
|
width="25" height="25">
|
|
<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
|
|
width="25" height="25">
|
|
<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
|
|
width="25" height="25">
|
|
|
|
<h2>PLEASE NOTE: This document applies to the HEAD of the source tree</h2>
|
|
|
|
If you are using a released version of Kubernetes, you should
|
|
refer to the docs that go with that version.
|
|
|
|
<!-- TAG RELEASE_LINK, added by the munger automatically -->
|
|
<strong>
|
|
The latest release of this document can be found
|
|
[here](http://releases.k8s.io/release-1.1/docs/user-guide/identifiers.md).
|
|
|
|
Documentation for other releases can be found at
|
|
[releases.k8s.io](http://releases.k8s.io).
|
|
</strong>
|
|
--
|
|
|
|
<!-- END STRIP_FOR_RELEASE -->
|
|
|
|
<!-- END MUNGE: UNVERSIONED_WARNING -->
|
|
|
|
# Identifiers
|
|
|
|
All objects in the Kubernetes REST API are unambiguously identified by a Name and a UID.
|
|
|
|
For non-unique user-provided attributes, Kubernetes provides [labels](labels.md) and [annotations](annotations.md).
|
|
|
|
## Names
|
|
|
|
Names are generally client-provided. Only one object of a given kind can have a given name at a time (i.e., they are spatially unique). But if you delete an object, you can make a new object with the same name. Names are the used to refer to an object in a resource URL, such as `/api/v1/pods/some-name`. By convention, the names of Kubernetes resources should be up to maximum length of 253 characters and consist of lower case alphanumeric characters, `-`, and `.`, but certain resources have more specific restrictions. See the [identifiers design doc](../design/identifiers.md) for the precise syntax rules for names.
|
|
|
|
## UIDs
|
|
|
|
UID are generated by Kubernetes. Every object created over the whole lifetime of a Kubernetes cluster has a distinct UID (i.e., they are spatially and temporally unique).
|
|
|
|
|
|
<!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
|
|
[]()
|
|
<!-- END MUNGE: GENERATED_ANALYTICS -->
|