cyberstrikeus 3.2.1 Ensure that a minimal audit policy is created (Manual)
Profile Applicability
- Level 1 - Master Node
Description
Kubernetes can audit the details of requests made to the API server. The --audit-policy-file flag must be set for this logging to be enabled.
Rationale
Logging is an important detective control for all systems, to detect potential unauthorised access.
Impact
Audit logs will be created on the master nodes, which will consume disk space. Care should be taken to avoid generating too large volumes of log information as this could impact the available of the cluster nodes.
Audit
Run the following command on one of the cluster master nodes:
ps -ef | grep kube-apiserver
Verify that the --audit-policy-file is set. Review the contents of the file specified and ensure that it contains a valid audit policy.
Remediation
Create an audit policy file for your cluster.
Default Value
Unless the --audit-policy-file flag is specified, no auditing will be carried out.
References
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 8.2 Collect Audit Logs | x | x | x |
| v7 | 6.2 Activate audit logging | x | x | x |