New Check: Amazon EC2 Reserved Instance Lease Expiration

[brittandeyoung]

Summary

Checks for Amazon EC2 Reserved Instances that are scheduled to expire within the next 30 days, or have expired in the preceding 30 days.

Motivation

Reserved Instances don't renew automatically. You can continue using an Amazon EC2 instance covered by the reservation without interruption, but you will be charged On-Demand rates. New Reserved Instances can have the same parameters as the expired ones, or you can purchase Reserved Instances with different parameters.

Additional context

https://docs.aws.amazon.com/awssupport/latest/user/cost-optimization-checks.html#amazon-ec2-reserved-instances-lease-expiration