CDK Preinstalled Amazon Linux EC2 Instance Construct

This is a CDK Construct for creating a preinstalled AmazonLinux EC2 instance.

You can use Node.js, Visual Studio Code, git and other software as soon as the EC2 instance starts.

Usage

Install the package:

npm install cdk-preinstalled-amazon-linux-ec2

Use it in your CDK stack:

import { PreinstalledAmazonLinuxInstance } from 'cdk-preinstalled-amazon-linux-ec2';
import * as ec2 from 'aws-cdk-lib/aws-ec2';

declare const vpc: ec2.IVpc;

// You can configure all properties of the EC2 instance
new PreinstalledAmazonLinuxInstance(this, 'Instance', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.T3, ec2.InstanceSize.NANO),
  machineImage: new ec2.AmazonLinuxImage({
    generation: ec2.AmazonLinuxGeneration.AMAZON_LINUX_2023,
  }),
  // Specify preinstalled software
  preinstalledSoftware: {
    packages: [
      PreinstalledSoftwareType.NODEJS,
      PreinstalledSoftwareType.VSCODE,
      PreinstalledSoftwareType.GIT,
    ],
    others: ['rsyslog'], // You can specify other software packages. These parameters are used as `sudo dnf install ${parameter}`
});

After the stack is deployed, you can SSH into the EC2 instance and use Node.js:

$ ssh ec2-user@<public-ip>
$ node --version
v20.13.1
$ code --version
1.89.1
$ git --version
git version 2.39.3

user data

Installation of software is done by user data script. You can see the script in the src/index.ts file.

// Install Node.js
userData.addCommands(
  'touch ~/.bashrc',
  'curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash',
  'source ~/.bashrc',
  'export NVM_DIR="$HOME/.nvm"',
  '[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"',
  `nvm install ${props.nodeJsVersion ?? '--lts'}`,
  // Note that the above will install nvm, node and npm for the root user.
  // It will not add the correct ENV VAR in ec2-user's environment.
  `cat <<EOF >> /home/ec2-user/.bashrc
export NVM_DIR="/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
EOF`);

Ofcourse, you can customize the additional user data script by calling instance.userData.addCommands() method.

declare const instance: PreinstalledAmazonLinuxInstance;

// install yarn
instance.userData.addCommands(
  'npm install -g yarn'
);

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