Why did the CPU credit balance for my Amazon EC2 T2 instance suddenly drop?

Last updated: 2019-11-19

The CPU credit balance suddenly dropped for my Amazon Elastic Compute Cloud (Amazon EC2) T2 instance. Why did that happen? 

Resolution

When you stop a T2 instance, all accrued credits are lost. When you relaunch the instance, the CPU credit balance has zero credits plus any allocated launch credits. For more information, see Monitoring Your CPU Credits.

To see the launch time of your instance, follow these steps:

  1. Go to the Amazon EC2 console, and then choose Instances from the navigation pane.
  2. Select the T2 instance.
  3. On the Description tab, review the Launch time.