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Policy Rule
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{
"properties": {
"displayName": "System updates on virtual machine scale sets should be installed",
"policyType": "BuiltIn",
"mode": "Indexed",
"description": "Audit whether there are any missing system security updates and critical updates that should be installed to ensure that your Windows and Linux virtual machine scale sets are secure.",
"metadata": {
"version": "1.0.0",
"category": "Security Center"
},
"parameters": {
"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/virtualMachineScaleSets"
},
"then": {
"effect": "[parameters('effect')]",
"details": {
"type": "Microsoft.Security/complianceResults",
"name": "SystemUpdates",
"existenceCondition": {
"field": "Microsoft.Security/complianceResults/resourceStatus",
"in": [
"OffByPolicy",
"Healthy"
]
}
}
}
}
},
"id": "/providers/Microsoft.Authorization/policyDefinitions/c3f317a7-a95c-4547-b7e7-11017ebdf2fe",
"type": "Microsoft.Authorization/policyDefinitions",
"name": "c3f317a7-a95c-4547-b7e7-11017ebdf2fe"
}
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