tldr: how do I modify the vpc security group of the cluster using the ModifyDbCluster API? I created a new instance of "Jaspersoft Reporting and Analytics for AWS" by running the CloudFormation Template, Including VPC configuration on http://community.jaspersoft.com/jaspersoft-aws/launch The instance launched properly, and I was able to log in as superuser, and change the password. I'm trying to create a new Datasource at http://IPADDRESS/jasperserver-pro/flow.html?_flowId=addDataSourceFlow, and I see the following error whenI click "test connection" Exception occurred during AWS data source recovery: . The specified DB Instance is a member of a cluster and its vpc security group should not be modified directly. Instead, modify the vpc security group of the cluster using the ModifyDbCluster API (Service: AmazonRDS; Status Code: 400; Error Code: InvalidParameterCombination; Request ID: <snip>) In the last field, no matter what URL I use I get the same error. It must be something more fundamental. How do I connect to RDS running MariaDB in an AWS VPC? here's a screenshot: http://i.imgur.com/2gdUkYn.png