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Policy Rule
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{
"properties": {
"displayName": "Diagnostic logs in Azure Stream Analytics should be enabled",
"policyType": "BuiltIn",
"mode": "Indexed",
"description": "Audit enabling of diagnostic logs. This enables you to recreate activity trails to use for investigation purposes; when a security incident occurs or when your network is compromised",
"metadata": {
"version": "3.0.0",
"category": "Stream Analytics"
},
"parameters": {
"effect": {
"type": "String",
"metadata": {
"displayName": "Effect",
"description": "Enable or disable the execution of the policy"
},
"allowedValues": [
"AuditIfNotExists",
"Disabled"
],
"defaultValue": "AuditIfNotExists"
},
"requiredRetentionDays": {
"type": "String",
"metadata": {
"displayName": "Required retention (days)",
"description": "The required diagnostic logs retention in days"
},
"defaultValue": "365"
}
},
"policyRule": {
"if": {
"field": "type",
"equals": "Microsoft.StreamAnalytics/streamingJobs"
},
"then": {
"effect": "[parameters('effect')]",
"details": {
"type": "Microsoft.Insights/diagnosticSettings",
"existenceCondition": {
"count": {
"field": "Microsoft.Insights/diagnosticSettings/logs[*]",
"where": {
"anyOf": [
{
"allOf": [
{
"field": "Microsoft.Insights/diagnosticSettings/logs[*].retentionPolicy.enabled",
"equals": "true"
},
{
"anyOf": [
{
"field": "Microsoft.Insights/diagnosticSettings/logs[*].retentionPolicy.days",
"equals": "0"
},
{
"field": "Microsoft.Insights/diagnosticSettings/logs[*].retentionPolicy.days",
"equals": "[parameters('requiredRetentionDays')]"
}
]
},
{
"field": "Microsoft.Insights/diagnosticSettings/logs.enabled",
"equals": "true"
}
]
},
{
"allOf": [
{
"field": "Microsoft.Insights/diagnosticSettings/logs.enabled",
"equals": "true"
},
{
"anyOf": [
{
"field": "Microsoft.Insights/diagnosticSettings/logs[*].retentionPolicy.enabled",
"notEquals": "true"
},
{
"field": "Microsoft.Insights/diagnosticSettings/storageAccountId",
"exists": false
}
]
}
]
}
]
}
},
"greaterOrEquals": 1
}
}
}
}
},
"id": "/providers/Microsoft.Authorization/policyDefinitions/f9be5368-9bf5-4b84-9e0a-7850da98bb46",
"type": "Microsoft.Authorization/policyDefinitions",
"name": "f9be5368-9bf5-4b84-9e0a-7850da98bb46"
}
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