# Using service-linked roles for AppFabric
<a name="using-service-linked-roles"></a>

AWS AppFabric uses AWS Identity and Access Management (IAM) [service-linked roles](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_terms-and-concepts.html#iam-term-service-linked-role). A service-linked role is a unique type of IAM role that is linked directly to AppFabric. Service-linked roles are predefined by AppFabric and include all the permissions that the service requires to call other AWS services on your behalf.

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

You can delete a service-linked role only after first deleting their related resources. This protects your AppFabric 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](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_aws-services-that-work-with-iam.html) 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 AppFabric
<a name="service-linked-role-permissions"></a>

AppFabric uses the service-linked role named `AWSServiceRoleForAppFabric`  – Allows AppFabric to put data in the an ingestion destination resource, such as an Amazon S3 bucket or an Amazon Data Firehose delivery stream. It also allows AppFabric to put CloudWatch metric data in the `AWS/AppFabric` namespace..

The `AWSServiceRoleForAppFabric` service-linked role trusts the following services to assume the role:
+ `appfabric.amazonaws.com`

The role permissions policy named `AWSAppFabricServiceRolePolicy` allows AppFabric to complete the following actions on the specified resources:
+ Action: `cloudwatch:PutMetricData` in the `AWS/AppFabric` namespace. This action grants permission for AppFabric to put metric data into the Amazon CloudWatch `AWS/AppFabric` namespace. For more information about the AppFabric metrics available in CloudWatch, see [Monitoring AWS AppFabric with Amazon CloudWatch](monitoring-cloudwatch.md).
+ Action: `s3:PutObject` in an Amazon S3 bucket. This action grants permission for AppFabric to put ingested data into an Amazon S3 bucket that you specify.
+ Action: `firehose:PutRecordBatch` in an Amazon Data Firehose delivery stream. This action grants permission for AppFabric to put ingested data into an Amazon Data Firehose delivery stream that you specify.

For more information, see [AWS managed policies for AppFabric](security-iam-awsmanpol.md).

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](https://docs.aws.amazon.com/IAM/latest/UserGuide/using-service-linked-roles.html#service-linked-role-permissions) in the *IAM User Guide*.

## Creating a service-linked role for AppFabric
<a name="create-service-linked-role"></a>

You don't need to manually create a service-linked role. When you create an AppFabric app bundle in the AWS Management Console, the AWS CLI, or the AWS API, AppFabric creates the service-linked role for you. 

## Editing a service-linked role for AppFabric
<a name="edit-service-linked-role"></a>

AppFabric doesn't allow you to edit the `AWSServiceRoleForAppFabric` service-linked role. After you create a service-linked role, you can't 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](https://docs.aws.amazon.com/IAM/latest/UserGuide/using-service-linked-roles.html#edit-service-linked-role) in the *IAM User Guide*.

## Deleting a service-linked role for AppFabric
<a name="delete-service-linked-role"></a>

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 delete all of your AppFabric app bundles before you can delete the service-linked role.

### Cleaning up a service-linked role
<a name="service-linked-role-review-before-delete"></a>

Before you can use IAM to delete a service-linked role, you must first delete any resources used by the role. App bundles that you create in AppFabric are used by the role. For more information, see [Delete AWS AppFabric for security resources](delete-resources.md).

**Note**  
If the AppFabric service is using the role when you try to delete the resources, then the deletion might fail. If that happens, wait for a few minutes and try the operation again.

### Manually delete the service-linked role
<a name="slr-manual-delete"></a>

Use the IAM console, the AWS CLI, or the AWS API to delete the `AWSServiceRoleForAppFabric` service-linked role. For more information, see [Deleting a service-linked role](https://docs.aws.amazon.com/IAM/latest/UserGuide/using-service-linked-roles.html#delete-service-linked-role) in the *IAM User Guide*.

## Supported Regions for AppFabric service-linked roles
<a name="slr-regions"></a>

AppFabric supports using service-linked roles in all of the AWS Regions where the service is available. For more information, see [AppFabric endpoints and quotas](https://docs.aws.amazon.com/general/latest/gr/appfabric.html) in the *AWS General Reference*.