This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::CloudFront::MonitoringSubscription
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A monitoring subscription. This structure contains information about whether additional CloudWatch metrics are enabled for a given CloudFront distribution.

## Syntax
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To declare this entity in your Amazon CloudFormation template, use the following syntax:

### JSON
<a name="aws-resource-cloudfront-monitoringsubscription-syntax.json"></a>

```
{
  "Type" : "AWS::CloudFront::MonitoringSubscription",
  "Properties" : {
      "[DistributionId](#cfn-cloudfront-monitoringsubscription-distributionid)" : String,
      "[MonitoringSubscription](#cfn-cloudfront-monitoringsubscription-monitoringsubscription)" : MonitoringSubscription
    }
}
```

### YAML
<a name="aws-resource-cloudfront-monitoringsubscription-syntax.yaml"></a>

```
Type: AWS::CloudFront::MonitoringSubscription
Properties:
  [DistributionId](#cfn-cloudfront-monitoringsubscription-distributionid): String
  [MonitoringSubscription](#cfn-cloudfront-monitoringsubscription-monitoringsubscription): 
    MonitoringSubscription
```

## Properties
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`DistributionId`  <a name="cfn-cloudfront-monitoringsubscription-distributionid"></a>
The ID of the distribution that you are enabling metrics for.  
*Required*: Yes  
*Type*: String  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`MonitoringSubscription`  <a name="cfn-cloudfront-monitoringsubscription-monitoringsubscription"></a>
A subscription configuration for additional CloudWatch metrics.  
*Required*: Yes  
*Type*: [MonitoringSubscription](aws-properties-cloudfront-monitoringsubscription-monitoringsubscription.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Return values
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### Ref
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When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns the unique identifier for the monitoring subscription, which is the same as the distribution ID of the distribution that the subscription is for.

For more information about using the `Ref` function, see [https://docs.amazonaws.cn/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html](https://docs.amazonaws.cn/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html).