Administración de roles de IAM con un AWS SDK - AWS Identity and Access Management

Administración de roles de IAM con un AWS SDK

En el siguiente ejemplo de código, se muestra cómo:

  • Crear un rol de IAM.

  • Adjuntar y separar políticas de los roles.

  • Eliminar un rol.

Python
SDK para Python (Boto3)
nota

Hay más en GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

Cree funciones que encapsulen las acciones del rol de IAM.

import json import logging import pprint import boto3 from botocore.exceptions import ClientError logger = logging.getLogger(__name__) iam = boto3.resource("iam") def create_role(role_name, allowed_services): """ Creates a role that lets a list of specified services assume the role. :param role_name: The name of the role. :param allowed_services: The services that can assume the role. :return: The newly created role. """ trust_policy = { "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": {"Service": service}, "Action": "sts:AssumeRole", } for service in allowed_services ], } try: role = iam.create_role( RoleName=role_name, AssumeRolePolicyDocument=json.dumps(trust_policy) ) logger.info("Created role %s.", role.name) except ClientError: logger.exception("Couldn't create role %s.", role_name) raise else: return role def attach_policy(role_name, policy_arn): """ Attaches a policy to a role. :param role_name: The name of the role. **Note** this is the name, not the ARN. :param policy_arn: The ARN of the policy. """ try: iam.Role(role_name).attach_policy(PolicyArn=policy_arn) logger.info("Attached policy %s to role %s.", policy_arn, role_name) except ClientError: logger.exception("Couldn't attach policy %s to role %s.", policy_arn, role_name) raise def detach_policy(role_name, policy_arn): """ Detaches a policy from a role. :param role_name: The name of the role. **Note** this is the name, not the ARN. :param policy_arn: The ARN of the policy. """ try: iam.Role(role_name).detach_policy(PolicyArn=policy_arn) logger.info("Detached policy %s from role %s.", policy_arn, role_name) except ClientError: logger.exception( "Couldn't detach policy %s from role %s.", policy_arn, role_name ) raise def delete_role(role_name): """ Deletes a role. :param role_name: The name of the role to delete. """ try: iam.Role(role_name).delete() logger.info("Deleted role %s.", role_name) except ClientError: logger.exception("Couldn't delete role %s.", role_name) raise

Utilice las funciones del contenedor para crear un rol, y luego asociar y desasociar una política.

def usage_demo(): """Shows how to use the role functions.""" logging.basicConfig(level=logging.INFO, format="%(levelname)s: %(message)s") print("-" * 88) print("Welcome to the AWS Identity and Account Management role demo.") print("-" * 88) print( "Roles let you define sets of permissions and can be assumed by " "other entities, like users and services." ) print("The first 10 roles currently in your account are:") roles = list_roles(10) print(f"The inline policies for role {roles[0].name} are:") list_policies(roles[0].name) role = create_role( "demo-iam-role", ["lambda.amazonaws.com", "batchoperations.s3.amazonaws.com"] ) print(f"Created role {role.name}, with trust policy:") pprint.pprint(role.assume_role_policy_document) policy_arn = "arn:aws:iam::aws:policy/AmazonS3ReadOnlyAccess" attach_policy(role.name, policy_arn) print(f"Attached policy {policy_arn} to {role.name}.") print(f"Policies attached to role {role.name} are:") list_attached_policies(role.name) detach_policy(role.name, policy_arn) print(f"Detached policy {policy_arn} from {role.name}.") delete_role(role.name) print(f"Deleted {role.name}.") print("Thanks for watching!")

Para obtener una lista completa de las guías para desarrolladores del AWS SDK y ejemplos de código, consulte Uso de IAM con un AWS SDK. En este tema también se incluye información sobre cómo comenzar a utilizar el SDK y detalles sobre sus versiones anteriores.