last sync: 2021-Jan-15 16:07:21 UTC

Azure Policy definition

Kubernetes cluster pod hostPath volumes should only use allowed host paths

Name Kubernetes cluster pod hostPath volumes should only use allowed host paths
Azure Portal
Id 098fc59e-46c7-4d99-9b16-64990e543d75
Version 2.0.1
details on versioning
Category Kubernetes
Microsoft docs
Description This policy ensures pod hostPath volumes can only use allowed host paths in a Kubernetes Cluster. This policy is generally available for Kubernetes Service (AKS), and preview for AKS Engine and Azure Arc enabled Kubernetes. For instructions on using this policy, visit https://aka.ms/kubepolicydoc.
Mode Microsoft.Kubernetes.Data
Type BuiltIn
Preview FALSE
Deprecated FALSE
Effect Default: audit
Allowed: (audit, deny, disabled)
Used RBAC Role none
History
Date/Time (UTC ymd) (i) Change type Change detail
2020-12-11 15:42:52 change Major (1.0.1 > 2.0.1)
2020-09-15 14:06:41 change Previous DisplayName: [Preview]: Kubernetes cluster pod hostPath volumes should only use allowed host paths
2020-07-08 14:28:08 add 098fc59e-46c7-4d99-9b16-64990e543d75
Used in Initiatives
Initiative DisplayName Initiative Id Initiative Category State
[Preview]: Azure Security Benchmark v2 bb522ac1-bc39-4957-b194-429bcd3bcb0b Regulatory Compliance Preview
Enable Monitoring in Azure Security Center 1f3afdf9-d0c9-4c3d-847f-89da613e70a8 Security Center GA
Kubernetes cluster pod security baseline standards for Linux-based workloads a8640138-9b0a-4a28-b8cb-1666c838647d Kubernetes GA
JSON Changes

Json
{
  "properties": {
    "displayName": "Kubernetes cluster pod hostPath volumes should only use allowed host paths",
    "policyType": "BuiltIn",
    "mode": "Microsoft.Kubernetes.Data",
    "description": "This policy ensures pod hostPath volumes can only use allowed host paths in a Kubernetes Cluster. This policy is generally available for Kubernetes Service (AKS), and preview for AKS Engine and Azure Arc enabled Kubernetes. For instructions on using this policy, visit https://aka.ms/kubepolicydoc.",
    "metadata": {
      "version": "2.0.1",
      "category": "Kubernetes"
    },
    "parameters": {
      "effect": {
        "type": "String",
        "metadata": {
          "displayName": "Effect",
          "description": "'Audit' allows a non-compliant resource to be created or updated, but flags it as non-compliant. 'Deny' blocks the non-compliant resource creation or update. 'Disabled' turns off the policy."
        },
        "allowedValues": [
          "audit",
          "deny",
          "disabled"
        ],
        "defaultValue": "audit"
      },
      "excludedNamespaces": {
        "type": "Array",
        "metadata": {
          "displayName": "Namespace exclusions",
          "description": "List of Kubernetes namespaces to exclude from policy evaluation."
        },
        "defaultValue": [
          "kube-system",
          "gatekeeper-system",
          "azure-arc"
        ]
      },
      "namespaces": {
        "type": "Array",
        "metadata": {
          "displayName": "Namespace inclusions",
          "description": "List of Kubernetes namespaces to only include in policy evaluation. An empty list means the policy is applied to all resources in all namespaces."
        },
        "defaultValue": [
          
        ]
      },
      "allowedHostPaths": {
        "type": "Object",
        "metadata": {
          "displayName": "Allowed host paths",
          "description": "The host paths allowed for pod hostPath volumes to use. Provide an empty paths list to block all host paths.",
          "schema": {
            "type": "object",
            "properties": {
              "paths": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "pathPrefix": {
                      "type": "string"
                    },
                    "readOnly": {
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "pathPrefix",
                    "readOnly"
                  ],
                  "additionalProperties": false
                }
              }
            },
            "required": [
              "paths"
            ],
            "additionalProperties": false
          }
        },
        "defaultValue": {
          "paths": [
            
          ]
        }
      }
    },
    "policyRule": {
      "if": {
        "field": "type",
        "in": [
          "AKS Engine",
          "Microsoft.Kubernetes/connectedClusters",
          "Microsoft.ContainerService/managedClusters"
        ]
      },
      "then": {
      "effect": "[parameters('effect')]",
        "details": {
          "constraintTemplate": "https://raw.githubusercontent.com/Azure/azure-policy/master/built-in-references/Kubernetes/allowed-host-paths/template.yaml",
          "constraint": "https://raw.githubusercontent.com/Azure/azure-policy/master/built-in-references/Kubernetes/allowed-host-paths/constraint.yaml",
        "excludedNamespaces": "[parameters('excludedNamespaces')]",
        "namespaces": "[parameters('namespaces')]",
          "values": {
          "allowedHostPaths": "[parameters('allowedHostPaths').paths]",
          "excludedNamespaces": "[parameters('excludedNamespaces')]"
          }
        }
      }
    }
  },
  "id": "/providers/Microsoft.Authorization/policyDefinitions/098fc59e-46c7-4d99-9b16-64990e543d75",
  "type": "Microsoft.Authorization/policyDefinitions",
  "name": "098fc59e-46c7-4d99-9b16-64990e543d75"
}