How to provision AWS EC2 instance with CDK

1. Install the AWS CDK and Terraform:

$ npm install -g aws-cdk
$ brew install terraform

2. Create a new CDK project using the AWS CDK CLI:

$ cdk init app --language=typescript

3. Add the AWS provider to the CDK app:

$ cdk init --provider aws

4. Add the Terraform module to the CDK app:

$ cdk add module 'terraform'

5. Create a Terraform configuration file for the EC2 instance in the terraform directory:

provider "aws" {
  region = "us-west-2"
}

resource "aws_instance" "example" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = "t2.micro"
}

6. Import the Terraform module into the CDK app:

import * as cdk from 'aws-cdk-lib';
import * as tf from './terraform';

export class Ec2InstanceStack extends cdk.Stack {
  constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    new tf.TerraformModule(this, 'TerraformModule', {
      terraformConfig: {
        path: 'terraform',
        vars: {
          region: 'us-west-2'
        }
      }
    });
  }
}

const app = new cdk.App();
new Ec2InstanceStack(app, 'Ec2InstanceStack');

7. Run cdk synth to see the Terraform plan for creating the EC2 instance:

$ cdk synth

8. Run cdk deploy to deploy the EC2 instance to your AWS account:

$ cdk deploy

This will create an EC2 instance in your AWS account using the Terraform module in the CDK app.