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RuleRoster

Source-backed platform rule

Kubernetes CronJob name length limit

Kubernetes reserves 11 characters for the controller-generated suffix, leaving a 52-character maximum CronJob name.

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Direct answer

What is the rule?

A Kubernetes CronJob name must be no longer than 52 characters because the controller appends 11 characters and Job names are limited to 63 characters.

Scope
Kubernetes object limits, workload identity, and quota enforcement
Human verified
August 14, 2026
Source checked
September 2, 2026

Published evidence

Rule details

CronJob name length

A Kubernetes CronJob name must be no longer than 52 characters. The CronJob controller appends 11 characters to the name, and the resulting Job name must stay within the 63-character Job name limit.

Applicability

Service: Kubernetes. Rule group: workload identity. Resource: CronJob metadata.name. Policy version and effective dates: not stated.

Evidence trail

Official sources

Attribution and license

Kubernetes website and documentation by The Kubernetes Authors. Source: https://github.com/kubernetes/website/tree/0dcdb1dda898de2bd4431a898f86c170e109063f. Licensed under Creative Commons Attribution 4.0 International: https://github.com/kubernetes/website/blob/0dcdb1dda898de2bd4431a898f86c170e109063f/LICENSE. Modified by RuleRoster: RuleRoster extracted and restructured facts into typed rule fields and concise answers. Verified 2026-08-14. No root NOTICE file was present at the reviewed revision. The Creative Commons license does not license trademark or patent rights. No endorsement by Kubernetes is implied.

Interpretation and accountability

Before you act

  1. Confirm that the scope matches your case.
  2. Keep recommendations, enforced limits, exceptions, and unstated details distinct.
  3. Open the official source before relying on the rule for a consequential decision.

Record dates

Published
August 15, 2026
Human verified
August 14, 2026
Source checked
September 2, 2026
Review due
September 9, 2026

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