Gestisci i ruoli IAM utilizzando un AWS SDK

L'esempio di codice seguente mostra come:

• Crea un ruolo IAM.

• Collegamento e scollegamento delle policy per un ruolo

• Elimina un ruolo.

Python

SDK per Python (Boto3)

Nota

C'è altro su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

Crea funzioni che eseguono il wrapping delle operazioni dei ruoli 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

Utilizza le funzioni di wrapping per creare un ruolo, per poi collegare e scollegare una policy.

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!")

• Per informazioni dettagliate sull'API, consulta i seguenti argomenti nella Documentazione di riferimento API SDK AWS per Python (Boto3).

  • AttachRolePolicy

  • CreateRole

  • DeleteRole

  • DetachRolePolicy

Per un elenco completo delle guide per sviluppatori AWS SDK e degli esempi di codice, consultaUtilizzo di questo servizio con un AWS SDK. Questo argomento include anche informazioni su come iniziare e dettagli sulle versioni precedenti dell'SDK.