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Merge pull request #26707 from veyu/patch-2

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Clarify syntax requirements for label value
This commit is contained in:
Kubernetes Prow Robot
2021-02-25 13:36:16 -08:00
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parent 30107b7b4c bd55d498df
commit 18f3eae6ef
1 changed files with 4 additions and 1 deletions
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content/en/docs/concepts/overview/working-with-objects/labels.md
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@@ -52,7 +52,10 @@ If the prefix is omitted, the label Key is presumed to be private to the user. A
The `kubernetes.io/` and `k8s.io/` prefixes are reserved for Kubernetes core components.
Valid label values must be 63 characters or less and must be empty or begin and end with an alphanumeric character (`[a-z0-9A-Z]`) with dashes (`-`), underscores (`_`), dots (`.`), and alphanumerics between.
Valid label value:
* must be 63 characters or less (cannot be empty),
* must begin and end with an alphanumeric character (`[a-z0-9A-Z]`),
* could contain dashes (`-`), underscores (`_`), dots (`.`), and alphanumerics between.
For example, here's the configuration file for a Pod that has two labels `environment: production` and `app: nginx` :