monitoring
The Amazon Resource Name (ARN) for the IAM role that permits RDS to send Enhanced Monitoring metrics to Amazon CloudWatch Logs. An example is `arn:aws:iam:123456789012:role/emaccess`. For information on creating a monitoring role, see Setting up and enabling Enhanced Monitoring in the Amazon RDS User Guide. If `MonitoringInterval` is set to a value other than `0`, supply a `MonitoringRoleArn` value. Valid for Cluster Type: Multi-AZ DB clusters only