The CDK Construct Library for AWS::SecretsManager
Project description
AWS Secrets Manager Construct Library
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.
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