LogAnalytics_WorkspaceMismatch_VM_Audit.json

{
  "properties": {
    "displayName": "Virtual machines should be connected to a specified workspace",
    "policyType": "BuiltIn",
    "mode": "Indexed",
    "description": "Reports virtual machines as non-compliant if they aren't logging to the Log Analytics workspace specified in the policy/initiative assignment.",
    "metadata": {
      "version": "1.1.0",
      "category": "Monitoring"
    },
    "version": "1.1.0",
    "parameters": {
      "logAnalyticsWorkspaceId": {
        "type": "String",
        "metadata": {
          "displayName": "Log Analytics Workspace Id that virtual machines should be configured for",
          "description": "This is the Id (GUID) of the Log Analytics Workspace that the virtual machines should be configured for."
        }
      },
      "effect": {
        "type": "String",
        "metadata": {
          "displayName": "Effect",
          "description": "Enable or disable the execution of the policy"
        },
        "allowedValues": [
          "AuditIfNotExists",
          "Disabled"
        ],
        "defaultValue": "AuditIfNotExists"
      }
    },
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Compute/virtualMachines"
      },
      "then": {
        "effect": "[parameters('effect')]",
        "details": {
          "type": "Microsoft.Compute/virtualMachines/extensions",
          "existenceCondition": {
            "allOf": [
              {
                "field": "Microsoft.Compute/virtualMachines/extensions/publisher",
                "equals": "Microsoft.EnterpriseCloud.Monitoring"
              },
              {
                "field": "Microsoft.Compute/virtualMachines/extensions/settings.workspaceId",
                "equals": "[parameters('logAnalyticsWorkspaceId')]"
              }
            ]
          }
        }
      }
    },
    "versions": [
      "1.1.0"
    ]
  },
  "id": "/providers/Microsoft.Authorization/policyDefinitions/f47b5582-33ec-4c5c-87c0-b010a6b2e917",
  "name": "f47b5582-33ec-4c5c-87c0-b010a6b2e917"
}