Title

The Kubernetes API Server must be set to audit log max size. (Cat II impact)

Discussion

The Kubernetes API Server must be set for enough storage to retain log information over the period required. When audit logs are large in size, the monitoring service for events becomes degraded. The function of the maximum log file size is to set these limits.

Check Content

Change to the /etc/kubernetes/manifests/ directory on the Kubernetes Control Plane. Run the command: grep -i audit-log-maxsize * If the setting "--audit-log-maxsize" is not set in the Kubernetes API Server manifest file or it is set to less than "100", this is a finding.

Fix Text

Edit the Kubernetes API Server manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Control Plane. Set the value of "--audit-log-maxsize" to a minimum of "100".

Additional Identifiers

Rule ID: SV-242462r927263_rule

Vulnerability ID: V-242462

Group Title: SRG-APP-000516-CTR-001335

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.