Rasika shows you how to
set up a target tracking scaling
policy for an Auto Scaling group

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What is a target tracking scaling policy and how do I create one for my Amazon EC2 Auto Scaling group?

You can use a target tracking scaling policy to configure dynamic scaling for your Auto Scaling group. Target tracking scaling policies adjust resources in your Auto Scaling group to maintain a target value based on your selected load metric. You can create a target tracking scaling policy with a predefined or customized metric. Amazon EC2 Auto Scaling then creates Amazon CloudWatch alarms to trigger your scaling policy and adjust your group's resources depending on your selected metric and target value.

Create a target tracking scaling policy in the Amazon EC2 console

Follow the instructions at Create an Auto Scaling Group with Target Tracking Scaling Policies to create your Auto Scaling group with a target tracking scaling policy in the Amazon Elastic Compute Cloud (Amazon EC2) console.

Warning: If you're selecting a customized metric, the metric type must be a valid utilization metric. Metric data that describes how busy an instance is allows you to scale the number of instances proportionally.

Create a target tracking scaling policy using the AWS CLI

Follow the instructions at Configure Scaling Policies Using the AWS CLI to create your Auto Scaling group and target tracking scaling policy using the AWS Command Line Interface (AWS CLI).


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Published: 2018-08-03