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::CloudWatch::AlarmMuteRule MuteTargets
<a name="aws-properties-cloudwatch-alarmmuterule-mutetargets"></a>

Specifies which alarms this rule applies to.

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

### JSON
<a name="aws-properties-cloudwatch-alarmmuterule-mutetargets-syntax.json"></a>

```
{
  "[AlarmNames](#cfn-cloudwatch-alarmmuterule-mutetargets-alarmnames)" : [ String, ... ]
}
```

### YAML
<a name="aws-properties-cloudwatch-alarmmuterule-mutetargets-syntax.yaml"></a>

```
  [AlarmNames](#cfn-cloudwatch-alarmmuterule-mutetargets-alarmnames): 
    - String
```

## Properties
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`AlarmNames`  <a name="cfn-cloudwatch-alarmmuterule-mutetargets-alarmnames"></a>
Specifies which alarms this rule applies to.  
*Required*: Yes  
*Type*: Array of String  
*Maximum*: `500`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)