What LaunchConfiguration for Fargate?

Question

An AutoScalingGroup needs a LaunchConfiguration

The problem is that the LaunchConfiguration requires things like ImageId and other parameters which I do not have since I am using containers.

How should the LaunchConfiguration be configured when using ECS Fargate?

AWS::AutoScaling::AutoScalingGroup https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-as-group.html

AWS::AutoScaling::LaunchConfiguration https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-as-launchconfig.html

Are you looking for [service autoscaling](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/service-auto-scaling.html) instead of ec2 autoscaling, which is only concerned with starting/stopping instances? — Frederick Cheung, Jan 27 '18 at 16:24

score 0 · Answer 1 · answered Feb 15 '18 at 14:08

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Try this cloud formation stack.it supported both EC2/FARGATE

https://github.com/shakyasunil/aws/blob/master/cloudformation/ecs_service.json

with this required parameter

TaskDefinitionName
ECSServiceRoleARN
ECSAutoscalingRoleARN

answered Feb 15 '18 at 14:08

Sunil Shakya

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score 0 · Answer 2 · answered Feb 27 '18 at 19:05

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Fargate does not require an Auto Scaling Group or Launch Configuration as Fargate manages the underlying infrastructure directly.

answered Feb 27 '18 at 19:05

Samuel Karp

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score 0 · Accepted Answer · answered Feb 26 '19 at 09:44

This is a working example of a FARGATE autoscaling policy, that, as you can see, does not involve Launch Configuration nor Auto Scaling Groups. You just have to insert the ScalingTargetId, and since we'll be using a Target Tracking Scaling Policy, the infrastructure will grant you to have a system with a target of 80% maximum CPU usage. When the usage will be more than that, autoscaling will occur.

ExampleCPUAutoScalingPolicy:
  Type: AWS::ApplicationAutoScaling::ScalingPolicy
  Properties:
    PolicyName: ECSCPUAutoScalingPolicy
    PolicyType: TargetTrackingScaling
    ScalingTargetId: !Ref ECSTarget
    TargetTrackingScalingPolicyConfiguration:
      DisableScaleIn: false
      TargetValue: 80
      ScaleInCooldown: 60
      ScaleOutCooldown: 60
      PredefinedMetricSpecification:
        PredefinedMetricType: ECSServiceAverageCPUUtilization

What LaunchConfiguration for Fargate?

3 Answers3

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