Elastic Beanstalk Auto Scaling Triggers | How to Configure

Learn how to configure Elastic Beanstalk Auto Scaling Triggers. Our AWS Support team is here to help you with your questions and concerns.

Elastic Beanstalk Auto Scaling Triggers | How to Configure

Elastic Beanstalk Auto Scaling adjusts the number of Amazon EC2 instances in an environment based on workload conditions. Auto Scaling triggers use Amazon CloudWatch metrics and configured thresholds to determine when to scale the environment up or down.

AWS Elastic Beanstalk provides managed application environments and integrates with Amazon EC2 Auto Scaling and CloudWatch. By configuring scaling triggers, we can define the metric, thresholds, and duration that determine when instances should be added or removed. The configuration therefore controls how the environment responds to changes in workload.

Today, we are going to look at configuring auto-scaling triggers in AWS Elastic Beanstalk.

1. First, open the Elastic Beanstalk console and then select the AWS Region from the Regions list.
2. Next, select Environments in the navigation pane and then choose the name of the environment from the list. We can also use the search bar for quicker access.
3. Then, select Edit in the Capacity configuration category, and choose “Edit.”
4. Now, head to the Scaling triggers section and configure the CloudWatch metric and threshold values that will control scaling. The main settings include:
   • Metric: Define the metric that will serve as the basis for your Auto Scaling trigger.
   • Statistic: Specify the statistic calculation the trigger should use, such as Average.
   • Unit: Indicate the unit for the trigger metric, like Bytes.
   • Period: Set how frequently Amazon CloudWatch measures the metrics for your trigger.
   • Breach duration: Determine the duration, in minutes, a metric can deviate outside upper and lower thresholds before triggering a scaling operation.
   • Upper threshold: If the metric exceeds this value for the breach duration, initiate a scaling operation.
   • Scale-up increment: Specify the number of Amazon EC2 instances to add during a scaling activity.
   • Lower threshold: If the metric falls below this value for the breach duration, trigger a scaling operation.
   • Scale down increment: Determine the number of Amazon EC2 instances to remove during a scaling activity.
5. Now, we can finalize our changes by clicking “Apply” at the bottom of the page.

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Conclusion

Configuring Elastic Beanstalk Auto Scaling triggers helps an environment respond to changes in application workload automatically. By setting the appropriate CloudWatch metric, thresholds, breach duration, and scaling increments, we can control when the environment scales up or down based on demand.