1. Explain the difference between a simple scaling policy and a scaling policy with steps.

2. What types of notifications can be created for an auto scaling group? Are emails the only option?

An ASG can also be configured to send notifications to Simple Notification Services (SNS) and leverage all of the features that it offers.

[https://docs.aws.amazon.com/autoscaling/latest/userguide/ASGettingNotifications.html](https://docs.aws.amazon.com/autoscaling/latest/userguide/ASGettingNotifications.html)

3. When monitoring CPU utilization, you may notice that it takes a few minutes for the metrics to populate. Why is this? Is there a way to enable more frequent logging of performance metrics?

4. Where would you go to view the status of the alarms that were created for your ASG?

5. What happens when a launch configuration is changed on a running ASG? Are instances immediately terminated and recreated with the new launch configuration?

Changing a launch configuration will **not** have any impact on currently running instances. Rather, new instances will be configured according to the launch configured when they are launched by the ASG.

[https://docs.aws.amazon.com/autoscaling/latest/userguide/change-launch-config.html](https://docs.aws.amazon.com/autoscaling/latest/userguide/change-launch-config.html)
1. Explain the difference between a simple scaling policy and a scaling policy with steps.

2. What types of notifications can be created for an auto scaling group? Are emails the only option?

An ASG can also be configured to send notifications to Simple Notification Services (SNS) and leverage all of the features that it offers.

[https://docs.aws.amazon.com/autoscaling/latest/userguide/ASGettingNotifications.html](https://docs.aws.amazon.com/autoscaling/latest/userguide/ASGettingNotifications.html)

3. When monitoring CPU utilization, you may notice that it takes a few minutes for the metrics to populate. Why is this? Is there a way to enable more frequent logging of performance metrics?

Instances use basic monitoring by default. Basic monitoring sends metric data to CloudWatch every 5 minutes. More frequent metric collection can be enabled by detailed monitoring. This comes with an associated fee, but it will send performance metrics to CloudWatch every 1 minute.

[http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-cloudwatch.html](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-cloudwatch.html)

4. Where would you go to view the status of the alarms that were created for your ASG?

5. What happens when a launch configuration is changed on a running ASG? Are instances immediately terminated and recreated with the new launch configuration?

Changing a launch configuration will **not** have any impact on currently running instances. Rather, new instances will be configured according to the launch configured when they are launched by the ASG.

[https://docs.aws.amazon.com/autoscaling/latest/userguide/change-launch-config.html](https://docs.aws.amazon.com/autoscaling/latest/userguide/change-launch-config.html)
Work on lab 6 answers
Work on lab 6 answers
