CDK - JavaScript

The Cloud Development Kit (CDK) is an open source software development framework to define Infrastructure as Code (IaC) and provision infrastructure on AWS cloud. It enables developers to define cloud infrastructure using familiar programming languages such as TypeScript, JavaScript, Python, C# and Java.

In this article, we will explore CDK in the context of JavaScript.

Installing CDK

Before we start working with the CDK in JavaScript, we need to install it. To install CDK, we need to have Node.js (version 10.3.0 or later) installed on our machine. We can then install CDK using the following command:

npm install -g aws-cdk

Creating a CDK Project in JavaScript

Next, let's create a new CDK project using the following commands:

mkdir my-cdk-project
cd my-cdk-project
cdk init app --language javascript

This will create a new CDK project in JavaScript. It will generate some default code in the lib folder.

Defining Infrastructure as Code using CDK

Now, let's define some infrastructure resources in our CDK project using JavaScript. We can define AWS resources such as IAM roles, S3 buckets, EC2 instances, etc.

Here's an example of how we define an S3 bucket using CDK in JavaScript:

const s3 = new s3.Bucket(this, 'MyBucket', {
  versioned: true,
});

This creates a new S3 bucket with versioning enabled.

Deploying Infrastructure using CDK

Once we have defined our infrastructure as code, we can deploy it using CDK. We can deploy using the following command:

cdk deploy

This will deploy our infrastructure to AWS. We can see the details of the deployed resources in the AWS console.

Conclusion

In this article, we have seen how to use CDK to define infrastructure as code using JavaScript. We have also seen how to deploy our infrastructure using CDK. CDK makes it easy for developers to define and manage their cloud infrastructure using code in their preferred language.