AWS::IAM::User - Amazon CloudFormation
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).


Creates a new IAM user for your Amazon Web Services account.

For information about quotas for the number of IAM users you can create, see IAM and Amazon STS quotas in the IAM User Guide.


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


{ "Type" : "AWS::IAM::User", "Properties" : { "Groups" : [ String, ... ], "LoginProfile" : LoginProfile, "ManagedPolicyArns" : [ String, ... ], "Path" : String, "PermissionsBoundary" : String, "Policies" : [ Policy, ... ], "Tags" : [ Tag, ... ], "UserName" : String } }


Type: AWS::IAM::User Properties: Groups: - String LoginProfile: LoginProfile ManagedPolicyArns: - String Path: String PermissionsBoundary: String Policies: - Policy Tags: - Tag UserName: String



A list of group names to which you want to add the user.

Required: No

Type: Array of String

Update requires: No interruption


Creates a password for the specified IAM user. A password allows an IAM user to access Amazon services through the Amazon Web Services Management Console.

You can use the Amazon CLI, the Amazon API, or the Users page in the IAM console to create a password for any IAM user. Use ChangePassword to update your own existing password in the My Security Credentials page in the Amazon Web Services Management Console.

For more information about managing passwords, see Managing passwords in the IAM User Guide.

Required: No

Type: LoginProfile

Update requires: No interruption


A list of Amazon Resource Names (ARNs) of the IAM managed policies that you want to attach to the user.

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

Required: No

Type: Array of String

Update requires: No interruption


The path for the user name. For more information about paths, see IAM identifiers in the IAM User Guide.

This parameter is optional. If it is not included, it defaults to a slash (/).

This parameter allows (through its regex pattern) a string of characters consisting of either a forward slash (/) by itself or a string that must begin and end with forward slashes. In addition, it can contain any ASCII character from the ! (\u0021) through the DEL character (\u007F), including most punctuation characters, digits, and upper and lowercased letters.

Required: No

Type: String

Pattern: (\u002F)|(\u002F[\u0021-\u007E]+\u002F)

Minimum: 1

Maximum: 512

Update requires: No interruption


The ARN of the managed policy that is used to set the permissions boundary for the user.

A permissions boundary policy defines the maximum permissions that identity-based policies can grant to an entity, but does not grant permissions. Permissions boundaries do not define the maximum permissions that a resource-based policy can grant to an entity. To learn more, see Permissions boundaries for IAM entities in the IAM User Guide.

For more information about policy types, see Policy types in the IAM User Guide.

Required: No

Type: String

Update requires: No interruption


Adds or updates an inline policy document that is embedded in the specified IAM user. To view AWS::IAM::User snippets, see Declaring an IAM User Resource.


The name of each policy for a role, user, or group must be unique. If you don't choose unique names, updates to the IAM identity will fail.

For information about limits on the number of inline policies that you can embed in a user, see Limitations on IAM Entities in the IAM User Guide.

Required: No

Type: Array of Policy

Update requires: No interruption


A list of tags that you want to attach to the new user. Each tag consists of a key name and an associated value. For more information about tagging, see Tagging IAM resources in the IAM User Guide.


If any one of the tags is invalid or if you exceed the allowed maximum number of tags, then the entire request fails and the resource is not created.

Required: No

Type: Array of Tag

Maximum: 50

Update requires: No interruption


The name of the user to create. Do not include the path in this value.

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: _+=,.@-. The user name must be unique within the account. User names are not distinguished by case. For example, you cannot create users named both "John" and "john".

If you don't specify a name, Amazon CloudFormation generates a unique physical ID and uses that ID for the user name.

If you specify a name, you must specify the CAPABILITY_NAMED_IAM value to acknowledge your template's capabilities. For more information, see Acknowledging IAM Resources in Amazon CloudFormation Templates.


Naming an IAM resource can cause an unrecoverable error if you reuse the same template in multiple Regions. To prevent this, we recommend using Fn::Join and AWS::Region to create a Region-specific name, as in the following example: {"Fn::Join": ["", [{"Ref": "AWS::Region"}, {"Ref": "MyResourceName"}]]}.

Required: No

Type: String

Update requires: Replacement

Return values


When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns the UserName. For example: mystack-myuser-1CCXAFG2H2U4D.

For more information about using the Ref function, see Ref.


The Fn::GetAtt intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the Fn::GetAtt intrinsic function, see Fn::GetAtt.


Returns the Amazon Resource Name (ARN) for the specified AWS::IAM::User resource. For example: arn:aws:iam::123456789012:user/mystack-myuser-1CCXAFG2H2U4D.

See also