Auto-Scaling Quiz
You have an application hosted on AWS consisting of EC2 Instances launched via an Auto Scaling Group. You notice that the EC2 Instances are not scaling up on demand. What checks can be done to ensure that the scaling occurs as expected?
A. Ensure that the right metrics are being used to trigger the scale out.
B. Ensure that ELB health checks are being used.
C. Ensure that the instances are placed across multiple Availability Zones.
D. Ensure that the instances are placed across multiple regions.
A. Ensure that the right metrics are being used to trigger the scale out.
If your scaling events are not based on the right metrics and do not have the right threshold defined, then the scaling will not occur as you want it to happen.
For more information on Auto Scaling Dynamic Scaling, please visit the following URL:
https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scale-based-on-demand.html