Tailoring the Compliance Operator - Compliance Operator | Security and compliance

While the Compliance Operator comes with ready-to-use profiles, they must be modified to fit the organizations’ needs and requirements. The process of modifying a profile is called tailoring.

The Compliance Operator provides an object to easily tailor profiles called a TailoredProfile. This assumes that you are extending a pre-existing profile, and allows you to enable and disable rules and values which come from the ProfileBundle.

You will only be able to use rules and variables that are available as part of the ProfileBundle that the profile you want to extend belongs to.

Using tailored profiles

While the TailoredProfile CR enables the most common tailoring operations, the XCCDF standard allows even more flexibility in tailoring OpenSCAP profiles. In addition, if your organization has been using OpenScap previously, you may have an existing XCCDF tailoring file and can reuse it.

The ComplianceSuite object contains an optional TailoringConfigMap attribute that you can point to a custom tailoring file. The value of the TailoringConfigMap attribute is a name of a config map, which must contain a key called tailoring.xml and the value of this key is the tailoring contents.

Procedure

Browse the available rules for the Fedora CoreOS (FCOS) ProfileBundle:

$ oc get rules.compliance -n openshift-compliance -l compliance.openshift.io/profile-bundle=rhcos4

Browse the available variables in the same ProfileBundle:

$ oc get variables.compliance -n openshift-compliance -l compliance.openshift.io/profile-bundle=rhcos4

Create a tailored profile named nist-moderate-modified:

Choose which rules you want to add to the nist-moderate-modified tailored profile. This example extends the rhcos4-moderate profile by disabling two rules and changing one value. Use the rationale value to describe why these changes were made:

Example new-profile-node.yaml

apiVersion: compliance.openshift.io/v1alpha1
kind: TailoredProfile
metadata:
  name: nist-moderate-modified
spec:
  extends: rhcos4-moderate
  description: NIST moderate profile
  title: My modified NIST moderate profile
  disableRules:
  - name: rhcos4-file-permissions-var-log-messages
    rationale: The file contains logs of error messages in the system
  - name: rhcos4-account-disable-post-pw-expiration
    rationale: No need to check this as it comes from the IdP
  setValues:
  - name: rhcos4-var-selinux-state
    rationale: Organizational requirements
    value: permissive

Table 1. Attributes for spec variables
Attribute	Description
`extends`	Name of the `Profile` object upon which this `TailoredProfile` is built.
`title`	Human-readable title of the `TailoredProfile`.
`disableRules`	A list of name and rationale pairs. Each name refers to a name of a rule object that is to be disabled. The rationale value is human-readable text describing why the rule is disabled.
`enableRules`	A list of name and rationale pairs. Each name refers to a name of a rule object that is to be enabled. The rationale value is human-readable text describing why the rule is enabled.
`description`	Human-readable text describing the `TailoredProfile`.
`setValues`	A list of name, rationale, and value groupings. Each name refers to a name of the value set. The rationale is human-readable text describing the set. The value is the actual setting.

Create the TailoredProfile object:

$ oc create -n openshift-compliance -f new-profile-node.yaml (1)

1	The `TailoredProfile` object is created in the default `openshift-compliance` namespace.

Example output

tailoredprofile.compliance.openshift.io/nist-moderate-modified created

Define the ScanSettingBinding object to bind the new nist-moderate-modified tailored profile to the default ScanSetting object.

Example new-scansettingbinding.yaml

apiVersion: compliance.openshift.io/v1alpha1
kind: ScanSettingBinding
metadata:
  name: nist-moderate-modified
profiles:
  - apiGroup: compliance.openshift.io/v1alpha1
    kind: Profile
    name: ocp4-moderate
  - apiGroup: compliance.openshift.io/v1alpha1
    kind: TailoredProfile
    name: nist-moderate-modified
settingsRef:
  apiGroup: compliance.openshift.io/v1alpha1
  kind: ScanSetting
  name: default

Create the ScanSettingBinding object:

$ oc create -n openshift-compliance -f new-scansettingbinding.yaml

Example output

scansettingbinding.compliance.openshift.io/nist-moderate-modified created