website/content/en/docs/reference/glossary/uid.md

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UID uid 2018-04-12 /docs/concepts/overview/working-with-objects/names A Kubernetes systems-generated string to uniquely identify objects.
fundamental

A Kubernetes systems-generated string to uniquely identify objects.

Every object created over the whole lifetime of a Kubernetes cluster has a distinct UID. It is intended to distinguish between historical occurrences of similar entities.