cis-ocp-vm-v100-6-2

DevOps & Security

Enable vCPU metrics (Manual)

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CIS 6.2 — Enable vCPU metrics

Profile Applicability

Level 1

Description

Openshift Virtualization provides metrics that you can use to monitor the consumption of cluster infrastructure resources, including vCPU. In order to use the vCPU metric, the schedstats=enable kernel argument must be applied.

Rationale

Metrics are a fundamental mechanism for understanding if the guest is behaving in an anomolous suspicious manner.

Impact

The kernel option is a prerequisite for using the prometheus metrics for the vCPU usage, without the metrics being reported.

Audit Procedure

Verify if the option is enabled in the kernel command line:

$ cat /proc/cmdline | grep schedstats=enable

Remediation

Enable the kernel option on all workernodes as documented in Chapter 1. Customizing nodes | Red Hat Product Documentation

Default Value

OpenShift enables schedstats by default.The command should returns a string containing schedstats=enable.

References

None listed in the PDF.

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	8.2 Collect Audit Logs	Y	Y	Y
v7	6.3 Enable Detailed Logging	N	Y	Y

MITRE ATT&CK Mappings

Tactic	Technique
Discovery	T1082 - System Information Discovery
Defense Evasion	T1562.006 - Impair Defenses: Indicator Blocking

Profile

Level 1 - OpenShift Virtualization