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# AWS::Route53RecoveryReadiness::ResourceSet
<a name="aws-resource-route53recoveryreadiness-resourceset"></a>

Creates a resource set in Amazon Route 53 Application Recovery Controller. A resource set is a set of resources of one type, such as Network Load Balancers, that span multiple cells. You can associate a resource set with a readiness check to have Route 53 ARC continually monitor the resources in the set for failover readiness.

You typically create a resource set and a readiness check for each supported type of Amazon resource in your application.

For more information, see [Readiness checks, resource sets, and readiness scopes](https://docs.amazonaws.cn/r53recovery/latest/dg/recovery-readiness.recovery-groups.readiness-scope.html) in the Amazon Route 53 Application Recovery Controller Developer Guide.

Route 53 ARC Readiness supports us-east-1 and us-west-2 Amazon Web Services Regions only.

## Syntax
<a name="aws-resource-route53recoveryreadiness-resourceset-syntax"></a>

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

### JSON
<a name="aws-resource-route53recoveryreadiness-resourceset-syntax.json"></a>

```
{
  "Type" : "AWS::Route53RecoveryReadiness::ResourceSet",
  "Properties" : {
      "[Resources](#cfn-route53recoveryreadiness-resourceset-resources)" : [ Resource, ... ],
      "[ResourceSetName](#cfn-route53recoveryreadiness-resourceset-resourcesetname)" : String,
      "[ResourceSetType](#cfn-route53recoveryreadiness-resourceset-resourcesettype)" : String,
      "[Tags](#cfn-route53recoveryreadiness-resourceset-tags)" : [ Tag, ... ]
    }
}
```

### YAML
<a name="aws-resource-route53recoveryreadiness-resourceset-syntax.yaml"></a>

```
Type: AWS::Route53RecoveryReadiness::ResourceSet
Properties:
  [Resources](#cfn-route53recoveryreadiness-resourceset-resources): 
    - Resource
  [ResourceSetName](#cfn-route53recoveryreadiness-resourceset-resourcesetname): String
  [ResourceSetType](#cfn-route53recoveryreadiness-resourceset-resourcesettype): String
  [Tags](#cfn-route53recoveryreadiness-resourceset-tags): 
    - Tag
```

## Properties
<a name="aws-resource-route53recoveryreadiness-resourceset-properties"></a>

`Resources`  <a name="cfn-route53recoveryreadiness-resourceset-resources"></a>
A list of resource objects in the resource set.  
*Required*: Yes  
*Type*: Array of [Resource](aws-properties-route53recoveryreadiness-resourceset-resource.md)  
*Minimum*: `1`  
*Maximum*: `6`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ResourceSetName`  <a name="cfn-route53recoveryreadiness-resourceset-resourcesetname"></a>
The name of the resource set to create.  
*Required*: No  
*Type*: String  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`ResourceSetType`  <a name="cfn-route53recoveryreadiness-resourceset-resourcesettype"></a>
The resource type of the resources in the resource set. Enter one of the following values for resource type:  
 AWS::ApiGateway::Stage, AWS::ApiGatewayV2::Stage, AWS::AutoScaling::AutoScalingGroup, AWS::CloudWatch::Alarm, AWS::EC2::CustomerGateway, AWS::DynamoDB::Table, AWS::EC2::Volume, AWS::ElasticLoadBalancing::LoadBalancer, AWS::ElasticLoadBalancingV2::LoadBalancer, AWS::Lambda::Function, AWS::MSK::Cluster, AWS::RDS::DBCluster, AWS::Route53::HealthCheck, AWS::SQS::Queue, AWS::SNS::Topic, AWS::SNS::Subscription, AWS::EC2::VPC, AWS::EC2::VPNConnection, AWS::EC2::VPNGateway, AWS::Route53RecoveryReadiness::DNSTargetResource.   
Note that AWS::Route53RecoveryReadiness::DNSTargetResource is only used for this setting. It isn't an actual Amazon CloudFormation resource type.   
*Required*: Yes  
*Type*: String  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`Tags`  <a name="cfn-route53recoveryreadiness-resourceset-tags"></a>
A tag to associate with the parameters for a resource set.  
*Required*: No  
*Type*: Array of [Tag](aws-properties-route53recoveryreadiness-resourceset-tag.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Return values
<a name="aws-resource-route53recoveryreadiness-resourceset-return-values"></a>

### Ref
<a name="aws-resource-route53recoveryreadiness-resourceset-return-values-ref"></a>

When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns the `ResourceSetName` object.

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).

### Fn::GetAtt
<a name="aws-resource-route53recoveryreadiness-resourceset-return-values-fn--getatt"></a>

The `Fn::GetAtt` intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

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

#### 
<a name="aws-resource-route53recoveryreadiness-resourceset-return-values-fn--getatt-fn--getatt"></a>

`ResourceSetArn`  <a name="ResourceSetArn-fn::getatt"></a>
The Amazon Resource Name (ARN) of the resource set.