Using service-linked roles for EC2 Capacity Manager

EC2 Capacity Manager uses AWS Identity and Access Management (IAM) service-linked roles. A service-linked role is a unique type of IAM role that is linked directly to Capacity Manager. Service-linked roles are predefined by Capacity Manager and include all the permissions that the service requires to call other AWS services on your behalf.

A service-linked role makes setting up Capacity Manager easier because you don’t have to manually add the necessary permissions. Capacity Manager defines the permissions of its service-linked roles, and unless defined otherwise, only Capacity Manager can assume its roles. The defined permissions include the trust policy and the permissions policy, and that permissions policy cannot be attached to any other IAM entity.

You can delete a service-linked role only after first deleting their related resources. This protects your Capacity Manager resources because you can't inadvertently remove permission to access the resources.

For information about other services that support service-linked roles, see AWS services that work with IAM and look for the services that have Yes in the Service-linked roles column. Choose a Yes with a link to view the service-linked role documentation for that service.

Service-linked role permissions for Capacity Manager

Capacity Manager uses the service-linked role named AWSServiceRoleForEC2CapacityManager to allow you to manage capacity resources and integrate with AWS Organizations on your behalf.

The AWSServiceRoleForEC2CapacityManager service-linked role trusts the following services to assume the role:

The role permissions policy named AWSEC2CapacityManagerServiceRolePolicy allows Capacity Manager to complete the following actions:

You must configure permissions to allow your users, groups, or roles to create, edit, or delete a service-linked role. For more information, see Service-linked role permissions in the IAM User Guide.

Creating a service-linked role for Capacity Manager

You can use the IAM console to create a service-linked role with the AWSEC2CapacityManagerServiceRolePolicy use case. In the AWS CLI or the AWS API, create a service-linked role with the ec2.capacitymanager.amazonaws.com service name. For more information, see Creating a service-linked role in the IAM User Guide. If you delete this service-linked role, you can use this same process to create the role again.

Editing a service-linked role for Capacity Manager

Capacity Manager does not allow you to edit the AWSServiceRoleForEC2CapacityManager service-linked role. After you create a service-linked role, you cannot change the name of the role because various entities might reference the role. However, you can edit the description of the role using IAM. For more information, see Editing a service-linked role in the IAM User Guide.

Deleting a service-linked role for Capacity Manager

If you no longer need to use a feature or service that requires a service-linked role, we recommend that you delete that role. That way you don’t have an unused entity that is not actively monitored or maintained. However, you must clean up the resources for your service-linked role before you can manually delete it.

To manually delete the service-linked role using IAM

Use the IAM console, the AWS CLI, or the AWS API to delete the AWSServiceRoleForEC2CapacityManager service-linked role. For more information, see Deleting a service-linked role in the IAM User Guide.

Supported Regions for Capacity Manager service-linked roles

Capacity Manager supports using service-linked roles in all of the Regions where the service is available. For more information, see AWS Regions and endpoints.

Capacity Manager does not support using service-linked roles in every Region where the service is available. You can use the AWSServiceRoleForEC2CapacityManager role in the following Regions.