Add Instance Monitoring option to AutoScaling Groups

[rbobrowicz]

Right now all Autoscaling Groups created by CDK have detailed monitoring enabled, incurring an extra cost for every instance on the CDK user. Users should be able to choose if they need/want detailed monitoring.

Use Case

Creating an Autoscaling Group with basic monitoring for cases where detailed monitoring is not needed/wanted in order to save CloudWatch costs.

Proposed Solution

Add an optional boolean instanceMonitoring property to AutoScalingGroupProps. CloudFormation already supports the field on the LaunchConfiguration object.

The field should be optional and default to true, maintaining current behavior and matching CloudFormation.

Other

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

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This is a 🚀 Feature Request

[spg]

Current workaround:

const autoScalingGroup = new autoscaling.AutoScalingGroup(this, "Asg", {
    ...
});

const launchConfig = autoScalingGroup.node.findChild(
  "LaunchConfig"
) as autoscaling.CfnLaunchConfiguration;
launchConfig.instanceMonitoring = false;