Accurate in an A/S environment? about cost-optimization-ec2-right-sizing HOT 3 CLOSED

Hi @Scott972, and sorry for being late. I don't quite understand your question, so can you explain it a little bit more?

from cost-optimization-ec2-right-sizing.

@beomseoklee Sure, so docs state that the last two weeks of data are used to determine a 'right size', but in my auto scaling environment instances are being launched and terminated frequently, none of them will hardly live for 2 weeks, so will the data I get take this into account or just the current usage of the current instances in the autoscaling group?

from cost-optimization-ec2-right-sizing.

@Scott972 Thanks for the detail.

The solution is going to check CloudWatch metrics for the running instances, then recommend the right sizing of running instances. In your case, if you are using auto scaling, many of instances can possibly only have few CloudWatch metrics, but the solution is going to calculate the right sizing based on the metrics within 2 weeks; some instances can only have 5-10 minutes metrics.

I believe auto scaling group instances would have mostly equal usage, so you can refer to the longest running instance among the auto scaling group, and when you get the result, I would recommend you to test as well before putting into your production.

from cost-optimization-ec2-right-sizing.