Lab 3: Scaling and Security

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This lab will cover scaling and security of ECS Fargate deployment. During initial deployment with CDK we have created a Target Tracking auto scaling policy. List and review CloudWatch alarms which trigger scaling events.

aws cloudwatch describe-alarms

Based on initial configuration events will be triggered based on following conditions :

  • Scale UP : CPUUtilization > 30 for 3 datapoints within 3 minutes
  • Scale DOWN : CPUUtilization < 27 for 15 datapoints within 15 minutes

To initiate scaling event we need to generate client traffic with following command

ab -n 1000000 -c 10  http://`aws cloudformation describe-stacks --stack-name FargateWorkshopOps-frontend --query "Stacks[0].Outputs[0].OutputValue" --output text`/

Open CloudWatch console and observe following dashboards :

  • CloudWatch -> Containers Insight -> ECS Services
  • CloudWatch -> ALARMS
  • Amazon ECS -> Clusters -> FargateWorkshopOps-cluster-OpsCluster -> Service -> FargateWorkshopOps-frontend-FrontendFargateLBService -> Tasks

After 3 minutes you should see new tasks being instantiated to account for increased traffic.