**To deregister an Amazon RDS DB instance from a stack** The following example deregisters an RDS DB instance, identified by its ARN, from its stack. :: aws opsworks deregister-rds-db-instance --region us-east-1 --rds-db-instance-arn arn:aws:rds:us-west-2:123456789012:db:clitestdb *Output*: None. **More Information** For more information, see `Deregistering Amazon RDS Instances`_ in the *ASW OpsWorks User Guide*. .. _`Deregistering Amazon RDS Instances`: http://docs.aws.amazon.com/opsworks/latest/userguide/resources-dereg.html#resources-dereg-rds .. instance ID: clitestdb Master usernams: cliuser Master PWD: some23!pwd DB Name: mydb aws opsworks deregister-rds-db-instance --region us-east-1 --rds-db-instance-arn arn:aws:rds:us-west-2:645732743964:db:clitestdb