Service-linked role for Amazon CloudWatch Internet Monitor
Amazon CloudWatch Internet Monitor uses an Amazon Identity and Access Management (IAM) service-linked role. A service-linked role is a unique type of IAM role that is linked directly to Internet Monitor. The service-linked role is predefined by Internet Monitor and includes all the permissions that the service requires to call other Amazon services on your behalf.
Internet Monitor defines the permissions of the service-linked role, and unless defined otherwise, only Internet Monitor can assume the role. 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 the role only after first deleting its related resources. This restriction protects your Internet Monitor resources because you can't inadvertently remove permissions to access the resources.
For information about other services that support service-linked roles, see Amazon services that work with IAM and look for the services that have Yes in the Service-linked role column. Choose a Yes with a link to view the service-linked role documentation for that service.
Service-linked role permissions for Internet Monitor
Internet Monitor uses the service-linked role named AWSServiceRoleForInternetMonitor. This role allows Internet Monitor to access resources in your account, such as Amazon Virtual Private Cloud resources, Amazon CloudFront distributions, Amazon WorkSpaces directories, and Network Load Balancers, so that you can select them when you create a monitor.
This service-linked role uses the managed policy CloudWatchInternetMonitorServiceRolePolicy.
The AWSServiceRoleForInternetMonitor service-linked role trusts the following service to assume the role:
internetmonitor.amazonaws.com
To view the permissions for this policy, see CloudWatchInternetMonitorServiceRolePolicy in the Amazon Managed Policy Reference.
Creating a service-linked role for Internet Monitor
You do not need to manually create the service-linked role for Internet Monitor. The first time that you create a monitor, Internet Monitor creates AWSServiceRoleForInternetMonitor for you.
For more information, see Creating a service-linked role in the IAM User Guide.
Editing a service-linked role for Internet Monitor
After Internet Monitor creates a service-linked role in your account, you cannot change the name of the role because various entities might reference the role. 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 Internet Monitor
If you no longer need to use a feature or service that requires a service-linked role, we recommend that you delete the 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 the service-linked role before you can manually delete it.
After you've removed your resources from your monitors in Internet Monitor and then deleted the monitors, you can delete the service-linked role AWSServiceRoleForInternetMonitor.
Note
If the Internet Monitor service is using the role when you try to delete it, then the deletion might fail. If that happens, wait for a few minutes and then try again.
To manually delete the service-linked role using IAM
Use the IAM console, the Amazon CLI, or the Amazon API to delete the AWSServiceRoleForInternetMonitor service-linked role. For more information, see Deleting a service-linked role in the IAM User Guide.
Updates to the Internet Monitor service-linked role
For updates to AWSServiceRoleForInternetMonitor, the Amazon managed policy for the Internet Monitor service-linked role, see CloudWatch updates to Amazon managed policies. For automatic alerts about managed policy changes in CloudWatch, subscribe to the RSS feed on the CloudWatch Document history page.