AWS CloudFormation Template for creating an Admin user with a Password and Access Key

create_admin.template

{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Parameters": {
        "AdminName": {
            "NoEcho": "false",
            "Type": "String",
            "Description": "New admin account name",
            "MinLength": "1",
            "MaxLength": "41",
            "AllowedPattern": "[a-zA-Z0-9]*",
            "ConstraintDescription": "Must contain only alphanumeric characters."
        },
        "AdminPassword": {
            "NoEcho": "true",
            "Type": "String",
            "Description": "New admin account password",
            "MinLength": "16",
            "MaxLength": "41",
            "AllowedPattern": "[a-zA-Z0-9]*",
            "ConstraintDescription": "Must contain only alphanumeric characters."
        }
    },
    "Resources": {
        "AdminUser": {
            "Type": "AWS::IAM::User",
            "Properties": {
                "Groups": [
                    {
                        "Ref": "AdminGroup"
                    }
                ],
                "UserName": {
                    "Ref": "AdminName"
                },
                "LoginProfile": {
                    "Password": {
                        "Ref": "AdminPassword"
                    }
                }
            }
        },
        "AdminGroup": {
            "Type": "AWS::IAM::Group",
            "Properties": {
                "GroupName": "Admin",
                "ManagedPolicyArns": [
                    "arn:aws:iam::aws:policy/AdministratorAccess"
                ]
            }
        },
        "AdminKey": {
            "Type": "AWS::IAM::AccessKey",
            "Properties": {
                "UserName": {
                    "Ref": "AdminUser"
                }
            }
            "DependsOn": [
                "AdminUser"
            ]
        }
    },
    "Outputs": {
        "AccessKey": {
            "Value": {
                "Ref": "AdminKey"
            },
            "Description": "AWSAccessKeyId of admin user"
        },
        "SecretKey": {
            "Value": {
                "Fn::GetAtt": [
                    "AdminKey",
                    "SecretAccessKey"
                ]
            },
            "Description": "AWSSecretKey of admin user"
        }
    }
}