If your Rackspace instance is located on an ORD Rackspace server, Chartio can connect using your private IP address. Simply enter your private IP address into the MySQL connection form in Chartio.
If your Rackspace instance is located in a region other than ORD, you’ll need to set up a Cloud Load Balancer, which will provide you with a public IP address. You can use this public IP address in the MySQL connection form to connect your Rackspace instance to Chartio.
Information about setting up a Cloud Load Balancer is available in Rackspace’s documentation.