The most secure and recommended approach for managing database credentials within AWS services is to use AWS Secrets Manager. Storing the Amazon Redshift credentials in AWS Secrets Manager (D) ensures they are encrypted at rest and managed centrally. To allow the AWS Glue job to retrieve these credentials at runtime, the IAM role associated with the job must be granted the appropriate permissions (E), specifically secretsmanager:GetSecret-Value, to access the specific secret. This combination eliminates hardcoded credentials from the script, addressing the security vulnerability while following AWS best practices for secret management.

1. AWS Glue Developer Guide

"Using secrets in AWS Glue connections": "You can use AWS Secrets Manager to store your credentials and then refer to them in your connection options... To use a secret with your connection

you must add secretsmanager:GetSecretValue permission to the IAM role that you use to access the connection." This source directly validates the combination of storing credentials in Secrets Manager (D) and granting the IAM role access (E).

2. AWS Secrets Manager User Guide

"What Is AWS Secrets Manager?": "Secrets Manager helps you protect secrets needed to access your applications

services

and IT resources. The service enables you to easily rotate

manage

and retrieve database credentials

API keys

and other secrets throughout their lifecycle." This supports the choice of Secrets Manager (D) as the appropriate service for this task.

3. AWS Glue Developer Guide

"Connection properties": "We recommend that you use AWS Secrets Manager to store your credentials and then refer to them in your connection options. Don't store passwords in the connection properties." This explicitly advises against insecure practices like using job parameters (A) and recommends the chosen solution.