5.5. Compliance Operator 이해

OpenShift Container Platform 관리자는 Compliance Operator를 통해 클러스터의 필수 규정 준수 상태를 설명하고 격차에 대한 개요와 문제를 해결하는 방법을 제공할 수 있습니다. Compliance Operator는 OpenShift Container Platform의 Kubernetes API 리소스와 클러스터를 실행하는 노드 모두의 규정 준수를 평가합니다. Compliance Operator는 NIST 인증 툴인 OpenSCAP을 사용하여 콘텐츠에서 제공하는 보안 정책을 검사하고 시행합니다.

중요

Compliance Operator는 Red Hat Enterprise Linux CoreOS (RHCOS) 배포에만 사용할 수 있습니다.

5.5.1. Compliance Operator 프로필

Compliance Operator 설치의 일부로 다양한 프로필을 사용할 수 있습니다. oc get 명령을 사용하여 사용 가능한 프로필, 프로필 세부 정보 및 특정 규칙을 볼 수 있습니다.

  • 사용 가능한 프로필 보기:

    $ oc get -n <namespace> profiles.compliance

    이 예에서는 기본 openshift-compliance 네임스페이스에 프로필을 표시합니다.

    $ oc get -n openshift-compliance profiles.compliance

    출력 예

    NAME                 AGE
    ocp4-cis             32m
    ocp4-cis-node        32m
    ocp4-e8              32m
    ocp4-moderate        32m
    ocp4-moderate-node   32m
    ocp4-nerc-cip        32m
    ocp4-nerc-cip-node   32m
    ocp4-pci-dss         32m
    ocp4-pci-dss-node    32m
    rhcos4-e8            32m
    rhcos4-moderate      32m
    rhcos4-nerc-cip      32m

    이러한 프로필은 다양한 규정 준수 벤치마크를 나타냅니다. 각 프로필에는 적용되는 제품 이름이 프로필 이름에 접두사로 추가됩니다. ocp4-e8 은 Essential 8 벤치마크를 OpenShift Container Platform 제품에 적용하고, rhcos4-e8 은 Essential 8 벤치마크를 RHCOS(Red Hat Enterprise Linux CoreOS) 제품에 적용합니다.

  • 프로필 세부 정보 보기:

    $ oc get -n <namespace> -oyaml profiles.compliance <profile name>

    이 예제에서는 rhcos4-e8 프로필의 세부 정보를 표시합니다.

    $ oc get -n openshift-compliance -oyaml profiles.compliance rhcos4-e8

    출력 예

    apiVersion: compliance.openshift.io/v1alpha1
    description: |-
      This profile contains configuration checks for Red Hat
      Enterprise Linux CoreOS that align to the Australian
      Cyber Security Centre (ACSC) Essential Eight.
      A copy of the Essential Eight in Linux Environments guide can
      be found at the ACSC website: ...
      id: xccdf_org.ssgproject.content_profile_e8
      kind: Profile
      metadata:
        annotations:
          compliance.openshift.io/image-digest: pb-rhcos426smj
          compliance.openshift.io/product: redhat_enterprise_linux_coreos_4
          compliance.openshift.io/product-type: Node
        labels:
          compliance.openshift.io/profile-bundle: rhcos4
        name: rhcos4-e8
        namespace: openshift-compliance
        ownerReferences:
        - apiVersion: compliance.openshift.io/v1alpha1
          blockOwnerDeletion: true
          controller: true
          kind: ProfileBundle
          name: rhcos4
      rules:
      - rhcos4-accounts-no-uid-except-zero
      - rhcos4-audit-rules-dac-modification-chmod
      - rhcos4-audit-rules-dac-modification-chown
      - rhcos4-audit-rules-execution-chcon
      - rhcos4-audit-rules-execution-restorecon
      - rhcos4-audit-rules-execution-semanage
      - rhcos4-audit-rules-execution-setfiles
      - rhcos4-audit-rules-execution-setsebool
      - rhcos4-audit-rules-execution-seunshare
      - rhcos4-audit-rules-kernel-module-loading-delete
      - rhcos4-audit-rules-kernel-module-loading-finit
      - rhcos4-audit-rules-kernel-module-loading-init
      - rhcos4-audit-rules-login-events
      - rhcos4-audit-rules-login-events-faillock
      - rhcos4-audit-rules-login-events-lastlog
      - rhcos4-audit-rules-login-events-tallylog
      - rhcos4-audit-rules-networkconfig-modification
      - rhcos4-audit-rules-sysadmin-actions
      - rhcos4-audit-rules-time-adjtimex
      - rhcos4-audit-rules-time-clock-settime
      - rhcos4-audit-rules-time-settimeofday
      - rhcos4-audit-rules-time-stime
      - rhcos4-audit-rules-time-watch-localtime
      - rhcos4-audit-rules-usergroup-modification
      - rhcos4-auditd-data-retention-flush
      - rhcos4-auditd-freq
      - rhcos4-auditd-local-events
      - rhcos4-auditd-log-format
      - rhcos4-auditd-name-format
      - rhcos4-auditd-write-logs
      - rhcos4-configure-crypto-policy
      - rhcos4-configure-ssh-crypto-policy
      - rhcos4-no-empty-passwords
      - rhcos4-selinux-policytype
      - rhcos4-selinux-state
      - rhcos4-service-auditd-enabled
      - rhcos4-sshd-disable-empty-passwords
      - rhcos4-sshd-disable-gssapi-auth
      - rhcos4-sshd-disable-rhosts
      - rhcos4-sshd-disable-root-login
      - rhcos4-sshd-disable-user-known-hosts
      - rhcos4-sshd-do-not-permit-user-env
      - rhcos4-sshd-enable-strictmodes
      - rhcos4-sshd-print-last-log
      - rhcos4-sshd-set-loglevel-info
      - rhcos4-sysctl-kernel-dmesg-restrict
      - rhcos4-sysctl-kernel-kptr-restrict
      - rhcos4-sysctl-kernel-randomize-va-space
      - rhcos4-sysctl-kernel-unprivileged-bpf-disabled
      - rhcos4-sysctl-kernel-yama-ptrace-scope
      - rhcos4-sysctl-net-core-bpf-jit-harden
      title: Australian Cyber Security Centre (ACSC) Essential Eight

  • 원하는 프로필 내 규칙 보기:

    $ oc get -n <namespace> -oyaml rules.compliance <rule_name>

    이 예에서는 rhcos4 프로필에 rhcos4-audit-rules-login-events 규칙을 표시합니다.

    $ oc get -n openshift-compliance -oyaml rules.compliance rhcos4-audit-rules-login-events

    출력 예

      apiVersion: compliance.openshift.io/v1alpha1
      checkType: Node
      description: |-
        The audit system already collects login information for all users and root. If the auditd daemon is configured to use the augenrules program to read audit rules during daemon startup (the default), add the following lines to a file with suffix.rules in the directory /etc/audit/rules.d in order to watch for attempted manual edits of files involved in storing logon events:
    
        -w /var/log/tallylog -p wa -k logins
        -w /var/run/faillock -p wa -k logins
        -w /var/log/lastlog -p wa -k logins
    
        If the auditd daemon is configured to use the auditctl utility to read audit rules during daemon startup, add the following lines to /etc/audit/audit.rules file in order to watch for unattempted manual edits of files involved in storing logon events:
    
        -w /var/log/tallylog -p wa -k logins
        -w /var/run/faillock -p wa -k logins
        -w /var/log/lastlog -p wa -k logins
      id: xccdf_org.ssgproject.content_rule_audit_rules_login_events
      kind: Rule
      metadata:
        annotations:
          compliance.openshift.io/image-digest: pb-rhcos426smj
          compliance.openshift.io/rule: audit-rules-login-events
          control.compliance.openshift.io/NIST-800-53: AU-2(d);AU-12(c);AC-6(9);CM-6(a)
          control.compliance.openshift.io/PCI-DSS: Req-10.2.3
          policies.open-cluster-management.io/controls: AU-2(d),AU-12(c),AC-6(9),CM-6(a),Req-10.2.3
          policies.open-cluster-management.io/standards: NIST-800-53,PCI-DSS
        labels:
          compliance.openshift.io/profile-bundle: rhcos4
        name: rhcos4-audit-rules-login-events
        namespace: openshift-compliance
        ownerReferences:
        - apiVersion: compliance.openshift.io/v1alpha1
          blockOwnerDeletion: true
          controller: true
          kind: ProfileBundle
          name: rhcos4
      rationale: Manual editing of these files may indicate nefarious activity, such as
        an attacker attempting to remove evidence of an intrusion.
      severity: medium
      title: Record Attempts to Alter Logon and Logout Events
      warning: Manual editing of these files may indicate nefarious activity, such as an attacker attempting to remove evidence of an intrusion.