aws-cdk.aws-secretsmanager 1.2.0

The CDK Construct Library for AWS::SecretsManager

AWS Secrets Manager Construct Library

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const secretsmanager = require('@aws-cdk/aws-secretsmanager');

Create a new Secret in a Stack

In order to have SecretsManager generate a new secret value automatically, you can get started with the following:

    // Default secret
    const secret = new secretsManager.Secret(this, 'Secret');
    secret.grantRead(role);

    new iam.User(this, 'User', {
      password: secret.secretValue
    });

    // Templated secret
    const templatedSecret = new secretsManager.Secret(this, 'TemplatedSecret', {
      generateSecretString: {
        secretStringTemplate: JSON.stringify({ username: 'user' }),
        generateStringKey: 'password'
      }
    });

    new iam.User(this, 'OtherUser', {
      userName: templatedSecret.secretValueFromJson('username').toString(),
      password: templatedSecret.secretValueFromJson('password')
    });

The Secret construct does not allow specifying the SecretString property of the AWS::SecretsManager::Secret resource (as this will almost always lead to the secret being surfaced in plain text and possibly committed to your source control).

If you need to use a pre-existing secret, the recommended way is to manually provision the secret in AWS SecretsManager and use the Secret.fromSecretArn or Secret.fromSecretAttributes method to make it available in your CDK Application:

const secret = secretsmanager.Secret.fromSecretAttributes(scope, 'ImportedSecret', {
  secretArn: 'arn:aws:secretsmanager:<region>:<account-id-number>:secret:<secret-name>-<random-6-characters>',
  // If the secret is encrypted using a KMS-hosted CMK, either import or reference that key:
  encryptionKey,
});

SecretsManager secret values can only be used in select set of properties. For the list of properties, see the CloudFormation Dynamic References documentation.

Rotating a Secret

A rotation schedule can be added to a Secret:

const fn = new lambda.Function(...);
const secret = new secretsmanager.Secret(this, 'Secret');

secret.addRotationSchedule('RotationSchedule', {
  rotationLambda: fn,
  automaticallyAfter: Duration.days(15)
});

See Overview of the Lambda Rotation Function on how to implement a Lambda Rotation Function.

For RDS credentials rotation, see aws-rds.