AWS secret manager and EC2 instance with IAM role

Yes, it is possible to retrieve AWS secret manager with this exact setup. Here are the steps to follow:

1. Install the AWS SDK for PHP using Composer:

composer require aws/aws-sdk-php

1. Create an IAM role with read access to the secret manager.

2. Attach the IAM role to the EC2 instance.

3. Use the AWS SDK for PHP to retrieve the secret value. Here's an example:

use Aws\SecretsManager\SecretsManagerClient;

$client = new SecretsManagerClient([
    'version' => 'latest',
    'region' => 'us-east-1',
]);

$result = $client->getSecretValue([
    'SecretId' => 'my-secret',
]);

$secretValue = $result['SecretString'];

In this example, replace us-east-1 with the region where your secret manager is located, and my-secret with the name of your secret.

Make sure that the IAM role attached to the EC2 instance has the necessary permissions to access the secret manager.