CODEWITHSUNDEEP
amazon-web-servicesloggingamazon-ec2monitoringautoscaling
Mahbub Rahman
Mahbub Rahman

Reputation: 1343

AWS Autoscaling Group : Monitoring changes

I found a notification mail from AWS that my autoscaling group's desired capacity has been changed from 2 to 1.

Is there any way to find out who made this change? Do I need to check any log or do I need to use any other AWS service to find this sort of information?

Part of the message is below:

Description: Terminating EC2 instance: i-xxxxxxxx
Cause: At 2021-02-01T03:08:59Z a user request update of AutoScalingGroup constraints to min: 1, max: 2, desired: 1 changing the desired capacity from 2 to 1.  At 2021-02-01T03:09:01Z an instance was taken out of service in response to a difference between desired and actual capacity, shrinking the capacity from 2 to 1.  At 2021-02-01T03:09:01Z instance i-xxxxxxx

Upvotes: 1

Views: 616

Answers (1)

Marcin
Marcin

Reputation: 238967

You could inspect CloudTrail Event History for any API events related to autoscaling in the time frame of the incident.

Specifically you could look for SetDesiredCapacity API action.

Upvotes: 3

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