The Kubernetes API Server must be set to audit log maximum backup.

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Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-242463	CNTR-K8-003300	SV-242463r961863_rule		Medium

Description

The Kubernetes API Server must set enough storage to retain logs for monitoring suspicious activity and system misconfiguration, and provide evidence for Cyber Security Investigations.

STIG	Date
Kubernetes Security Technical Implementation Guide	2025-05-16

Details

Check Text (C-45738r863928_chk)

Change to the /etc/kubernetes/manifests/ directory on the Kubernetes Control Plane. Run the command:
grep -i audit-log-maxbackup *

If the setting "audit-log-maxbackup" is not set in the Kubernetes API Server manifest file or it is set less than "10", this is a finding.

Fix Text (F-45696r863929_fix)

Edit the Kubernetes API Server manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Control Plane. Set the value of "--audit-log-maxbackup" to a minimum of "10".

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