host-namespace.yaml

# Copyright 2024 Google LLC
#
# This is “Software” that is licensed under the “General Software” section of
# the Service Specific Terms (https://cloud.google.com/terms/service-terms) for
# usage in accordance with the following “Scope of Use”: This file may only be
# used on an Anthos cluster, including any associated ci/cd use. “Anthos
# cluster” is defined as “A Cluster (of any kind) registered to a fleet project
# where the Anthos API is enabled”.
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPHostNamespace
metadata:
  name: cis-gke-v1.5.0-host-namespace
  labels:
    policycontroller.gke.io/bundleName: cis-gke-v1.5.0
  annotations:
    policycontroller.gke.io/bundleVersion: "202405.0"
    policycontroller.gke.io/constraintData: |-
      "{
        bundleName: 'cis-gke-v1.5.0',
        bundleDisplayName: 'CIS GKE Benchmark v1.5.0',
        bundleLink: 'https://cloud.google.com/anthos-config-management/docs/how-to/using-cis-gke-v1.5',
        bundleVersion: '202405.0',
        bundleDescription: 'Use the CIS GKE Benchmark 1.5.0 policy bundle with Policy Controller to evaluate the compliance of your cluster resources against the CIS GKE Benchmark v1.5.0, which is a set of recommendations for configuring GKE to support a robust security posture.',
        controlNumbers: '[4.2.1]',
        severity: 'UNSPECIFIED',
        description: 'Sharing the host namespaces must be disallowed. See "Pod Security Standards" for more information: https://kubernetes.io/docs/concepts/security/pod-security-standards/#baseline',
        remediation: 'Containers cannot run with `hostPID` or `hostIPC` set to `true`. Set your containers with both `hostPID: false` and `hostIPC: false`.',
        minimumTemplateLibraryVersion: '1.11.1',
        constraintHash: '7cd7a7cd30116b463e3e0405e6b0df0a1f2c0e2b61291425fc3becf841c12c3e'
      }"
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
    excludedNamespaces:
    - kube-system