[ECS] [Feature Request]: Allow to specify Log Group for `containerInsights`

[r-heimann]

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Tell us about your request

Currently it is not possible to assign a Log Group to an AWS::ECS::Cluster with enabled containerInsights. This causes the cluster to create a new CloudWatch Log Group. The automatically created Log Group has the following naming scheme:

/aws/ecs/containerinsights/{ClusterName}/performance

Which service(s) is this request for?

ECS (Fargate) and CloudFormation/CDK

Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?

Currently you have to do this:

AWSTemplateFormatVersion: 2010-09-09
Description: ECS Cluster example

Resources:
  ECSCluster:
    Type: AWS::ECS::Cluster
    Properties:
      ClusterSettings:
        - Name: containerInsights # <-- will automatically create a log group
          Value: enabled
      CapacityProviders:
        - FARGATE

  ECSClusterLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub "/aws/ecs/containerinsights/${ECSCluster}/performance"

This will create a Log Group that containerInsights uses, including tags and other options a user wants the log group to have. It would be better if a user can directly specify a non-default log group for the containerInsights in the GUI and using the API. Lambda, for example, already supports this.

Are you currently working around this issue?

See workaround above.

Additional context

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