Getting a list of instances in an EC2 auto scale group?

Question

Is there a utility or script available to retrieve a list of all instances from AWS EC2 auto scale group?

I need a dynamically generated list of production instance

Answer 1

You can use the describe-auto-scaling-instances cli command, and query for your autoscale group name.

Example:

aws autoscaling describe-auto-scaling-instances --region us-east-1 --query 'AutoScalingInstances[?AutoScalingGroupName==`YOUR_ASG`]' --output text

Hope that helps