If you want to detect the CPU usage and memory usage of AWS RDS, you can use the cloudwatch that comes with AWS.
AWS permissions
As long as the service is turned on, it can be detected.
If you want to use grafana to connect to cloudwatch, you need to configure permissions
and
click Security credentials– access key – add key
to save the information.
Grafana connection
Add a new data source in grafana and select CloudWatch.
Just fill in the corresponding ID and Key.
import template
https://grafana.com/grafana/dashboards/707-aws-rds/
Import the ready-made AWS template and make some adjustments.