How to attach an EBS volume to Cloud9 via CDK stack?

Question

I am creating a cloud9 environment from CDK as below. I want to attach/adjust EBS volume size and attach a IAM Role to the EC2 of the cloud9 from the CDK stack.  Can anyone help?

```
import { aws_cloud9, Stack, StackProps } from 'aws-cdk-lib';
import { Construct } from 'constructs';

export class Cloud9CdkStack extends Stack {
  constructor(scope: Construct, id: string, props?: StackProps) {
    super(scope, id, props);

// cloud9 environment 
    const cloud9 = new aws_cloud9.CfnEnvironmentEC2(
      this,
      'CdkCloud9Example',
      {
        automaticStopTimeMinutes: 30,
        instanceType: 't2.large',
        name: 'CdkCloud9Example',
        connectionType: 'CONNECT_SSM',
        ownerArn: 'arn:aws:iam::IAM_USER_ID:user/IAM_USER_NAME'
      }
    )

// access the ec2 and attach volume ??

}
}

```

Accepted Answer

There is no CDK API to do this directly. However, you can use one of the following approaches to implement it by yourself.

### A Lambda-backed custom CDK resource in your CDK stack
Implement a [custom resource](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.custom_resources-readme.html) using [this example](https://github.com/aws-samples/aws-cdk-examples/tree/master/typescript/custom-resource/) as a reference. In the Lambda function, you can modify the underlying EC2 instance by using the AWS SDK. The EC2 instance running a Cloud9 environment has a tag `aws:cloud9:environment` with the value of the environment ID, so you can use this tag to obtain the EC2 instance ID. Using the Lambda function and the AWS SDK, you can modify the underlying EC2 instance in the way you want.

### Systems Manager Document
You can leverage AWS Systems Manager and its Documents for setting up the instance. Take a look on [this CDK construct](https://constructs.dev/packages/@cdk-use-cases/custom-cloud9-ssm) on [ConstructHub](https://constructs.dev/). This construct provides a method `resizeEBSTo` for configuring the instance's EBS volume. You can add another Document steps using the `addDocumentSteps` method for any other required changes.

How to attach an EBS volume to Cloud9 via CDK stack?

A Lambda-backed custom CDK resource in your CDK stack

Systems Manager Document

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