host_namespaces_hostnetwork.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: K8sPSPHostNetworkingPorts
metadata:
  name: cis-gke-v1.5.0-host-namespaces-hostnetwork
  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: 'Restricts containers from running with the `hostNetwork` flag set to `true`.',
        remediation: 'Containers cannot run with `hostNetwork` set to `true`. Remove `hostNetwork: true` from your containers.',
        minimumTemplateLibraryVersion: '1.11.1',
        constraintHash: '27560187435749d266c602cc5b9bc37612a622372662884368153dc0e39c890f'
      }"
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
    excludedNamespaces:
    - kube-system
  parameters:
    hostNetwork: false