AWS CloudFormation
User Guide (API Version 2010-05-15)


The AWS::IAM::ServiceLinkedRole resource creates a service-linked role in AWS Identity and Access Management (IAM). A service-linked role is a unique type of IAM role that is linked directly to an AWS service. Service-linked roles are predefined by the service and include all the permissions that the service requires to call other AWS services on your behalf. The linked service also defines how you create, modify, and delete a service-linked role. For more information, see CreateServiceLinkedRole in the IAM API Reference or Using Service-Linked Roles in the IAM User Guide.


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


{ "Type" : "AWS::IAM::ServiceLinkedRole", "Properties" : { "AWSServiceName" : String, "CustomSuffix" : String, "Description" : String } }


Type: "AWS::IAM::ServiceLinkedRole" Properties: AWSServiceName: String CustomSuffix: String Description: String



The service principal for the AWS service to which this role is attached. You use a string similar to a URL but without the http:// in front. For example:

Service principals are unique and case sensitive. To find the exact service principal for your service-linked role, see AWS Services That Work with IAM in the IAM User Guide. Look for the services that have Yes in the Service-Linked Role column. Choose the Yes link to view the service-linked role documentation for that service.

Required: Yes

Type: String

Update requires: Replacement


A string that you provide, which is combined with the service-provided prefix to form the complete role name. If you make multiple requests for the same service, then you must supply a different CustomSuffix for each request. Otherwise the request fails with a duplicate role name error. For example, you could add -1 or -debug to the suffix.

Some services do not support the CustomSuffix parameter. If you provide an optional suffix and the operation fails, try the operation again without the suffix.

Required: No

Type: String

Update requires: Replacement


The description of the role.

Required: No

Type: String

Update requires: No interruption


Create an IAM Service-Linked Role for Auto Scaling

The following example creates a service-linked role that can be assumed by the Auto Scaling service.


--- Description: "SLR resource create test - Auto Scaling" Resources: BasicSLR: Type: "AWS::IAM::ServiceLinkedRole" Properties: AWSServiceName: "" Description: "Test SLR description" CustomSuffix: "TestSuffix" Outputs: SLRId: Value: !Ref BasicSLR

See Also