| name | cis-k8s-v1110-1.2.17 |
| description | Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated) |
| category | cis-k8s |
| version | 1.11.0 |
| author | cyberstrike-official |
| tags | ["cis","kubernetes","control-plane","api-server","audit-log","audit-log-maxage","log-retention"] |
| cis_id | 1.2.17 |
| cis_benchmark | CIS Kubernetes Benchmark v1.11.0 |
| tech_stack | ["kubernetes"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
1.2.17 Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated)
Profile Applicability
Description
Retain the logs for at least 30 days or as appropriate.
Rationale
Retaining logs for at least 30 days ensures that you can go back in time and investigate or correlate any events. Set your audit log retention period to 30 days or as per your business requirements.
Impact
None
Audit
Run the following command on the Control Plane node:
ps -ef | grep kube-apiserver
Verify that the --audit-log-maxage argument is set to 30 or as appropriate.
Remediation
Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml on the Control Plane node and set the --audit-log-maxage parameter to 30 or as an appropriate number of days:
--audit-log-maxage=30
Default Value
By default, auditing is not enabled.
References
- https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/
- https://kubernetes.io/docs/tasks/debug/debug-cluster/audit/
- https://github.com/kubernetes/enhancements/issues/22
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|
| v8 | 8.3 Ensure Adequate Audit Log Storage | * | * | * |
| v7 | 6.4 Ensure adequate storage for logs | | * | * |
