Menu
AWS Identity and Access Management
API Reference (API Version 2010-05-08)

AttachRolePolicy

Attaches the specified managed policy to the specified IAM role. When you attach a managed policy to a role, the managed policy becomes part of the role's permission (access) policy.

Note

You cannot use a managed policy as the role's trust policy. The role's trust policy is created at the same time as the role, using CreateRole. You can update a role's trust policy using UpdateAssumeRolePolicy.

Use this API to attach a managed policy to a role. To embed an inline policy in a role, use PutRolePolicy. For more information about policies, see Managed Policies and Inline Policies in the IAM User Guide.

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

PolicyArn

The Amazon Resource Name (ARN) of the IAM policy you want to attach.

For more information about ARNs, see Amazon Resource Names (ARNs) and AWS Service Namespaces in the AWS General Reference.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Required: Yes

RoleName

The name (friendly name, not ARN) of the role to attach the policy to.

This parameter allows (per its regex pattern) a string of characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also include any of the following characters: _+=,.@-

Type: String

Length Constraints: Minimum length of 1. Maximum length of 64.

Pattern: [\w+=,.@-]+

Required: Yes

Errors

For information about the errors that are common to all actions, see Common Errors.

InvalidInput

The request was rejected because an invalid or out-of-range value was supplied for an input parameter.

HTTP Status Code: 400

LimitExceeded

The request was rejected because it attempted to create resources beyond the current AWS account limits. The error message describes the limit exceeded.

HTTP Status Code: 409

NoSuchEntity

The request was rejected because it referenced an entity that does not exist. The error message describes the entity.

HTTP Status Code: 404

PolicyNotAttachable

The request failed because AWS service role policies can only be attached to the service-linked role for that service.

HTTP Status Code: 400

ServiceFailure

The request processing has failed because of an unknown error, exception or failure.

HTTP Status Code: 500

UnmodifiableEntity

The request was rejected because only the service that depends on the service-linked role can modify or delete the role on your behalf. The error message includes the name of the service that depends on this service-linked role. You must request the change through that service.

HTTP Status Code: 400

Example

Sample Request

https://iam.amazonaws.com/?Action=AttachRolePolicy
&PolicyArn=arn:aws:iam::aws:policy/ReadOnlyAccess
&RoleName=ReadOnlyRole
&Version=2010-05-08
&AUTHPARAMS

Sample Response

<AttachRolePolicyResponse xmlns="https://iam.amazonaws.com/doc/2010-05-08/">
  <ResponseMetadata>
    <RequestId>37a87673-3d07-11e4-bfad-8d1c6EXAMPLE</RequestId>
  </ResponseMetadata>
</AttachRolePolicyResponse>

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: