# AWS::Redshift::ScheduledAction ResizeClusterMessage Describes a resize cluster operation. For example, a scheduled action to run the `ResizeCluster` API operation. ## Syntax To declare this entity in your AWS CloudFormation template, use the following syntax: ### JSON
{
    "ClusterIdentifier" : String,
    "ClusterType" : String,
    "NodeType" : String,
    "NumberOfNodes" : Integer,
    "Classic" : Boolean
}
### YAML
ClusterIdentifier: String
ClusterType: String
NodeType: String
NumberOfNodes: Integer
Classic: Boolean
## Properties #### ClusterIdentifier _Required_: Yes _Type_: String _Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt) #### ClusterType _Required_: No _Type_: String _Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt) #### NodeType _Required_: No _Type_: String _Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt) #### NumberOfNodes _Required_: No _Type_: Integer _Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt) #### Classic _Required_: No _Type_: Boolean _Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)