Kubernetes Labels and Annotations: Difference between revisions
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<font color='darkgray'>TODO: Label syntax and character set: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#syntax-and-character-set</font>. | <font color='darkgray'>TODO: Label syntax and character set: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#syntax-and-character-set</font>. | ||
For a specific object declaration, the labels are specified in the [[Kubernetes Manifest Metadata|metadata]] section of the [[Kubernetes_Manifests#metadata|manifest]]. | |||
=<span id='Annotation'></span>Annotations= | =<span id='Annotation'></span>Annotations= | ||
An annotation contains non-identifying information. The information exposed by annotations is not used internally by Kubernetes. They cannot be used in selectors. The annotation keys and values are not constrained. | An annotation contains non-identifying information. The information exposed by annotations is not used internally by Kubernetes. They cannot be used in selectors. The annotation keys and values are not constrained. | ||
Revision as of 00:56, 7 September 2019
Internal
Labels
A label contains identifying information.
Labels are used by selector queries, or within selector sections of object definitions.
The structure of keys and values is constrained, so they can be evaluated quickly.
TODO: Label syntax and character set: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#syntax-and-character-set.
For a specific object declaration, the labels are specified in the metadata section of the manifest.
Annotations
An annotation contains non-identifying information. The information exposed by annotations is not used internally by Kubernetes. They cannot be used in selectors. The annotation keys and values are not constrained.