RDS waste check
RDS Extended Support Cost
rds_extended_support_cost
What it finds
RDS Extended Support Cost: one of the RDS checks in the database optimization group. Checks in this group look for: database capacity that is idle, oversized for its load, kept past its useful life, or priced on a mode that does not fit how it is used.
Why it costs money
Managed databases bill for provisioned instances, storage and backups around the clock, so unused or oversized capacity is a standing cost.
How it is detected
Non-Aurora RDS MySQL/PostgreSQL instance in warning window or active Extended Support surcharge state
Detection confidence: HIGH. This is the criterion from our public docs. It runs in a local scan with your own read-only credentials.
AWS's own tools
AWS flags this too, under "Amazon RDS resources major versions update is required".
Checked against the AWS documentation.
Run it yourself
Nothing leaves your machine. The local scan has no telemetry.