node-ec2-instance 0.0.7
CDK construct library for creating an EC2 instance with Node.js installed
License: Apache-2.0
Requires Python: ~=3.8

# CDK Node.js EC2 Instance Construct

This is a CDK Construct for creating an EC2 instance with Node.js installed.

You can use Node.js as soon as the EC2 instance starts.

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## Usage

Install the package:

```bash
npm install cdk-node-ec2-instance
```

Use it in your CDK stack:

```python
import { NodeEc2Instance } from 'cdk-node-ec2-instance';
import * as ec2 from 'aws-cdk-lib/aws-ec2';

declare const vpc: ec2.IVpc;

// You can configure all properties of the EC2 instance
new NodeEc2Instance(this, 'Instance', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.T3, ec2.InstanceSize.NANO),
  machineImage: new ec2.AmazonLinuxImage({
    generation: ec2.AmazonLinuxGeneration.AMAZON_LINUX_2023,
  }),
  nodeJsVersion: 'v20.13.1', // Optional property. Default is installing the latest LTS version
});
```

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

```bash
$ ssh ec2-user@<public-ip>
$ node --version
v20.13.1
```

## user data

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

```python
nodejsUserData.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.

```python
declare const instance: NodeEc2Instance;

// install VScode for linux
instance.userData.addCommands(
  'sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc',
  'echo -e "[code]\nname=Visual Studio Code\nbaseurl=https://packages.microsoft.com/yumrepos/vscode\nenabled=1\ngpgcheck=1\ngpgkey=https://packages.microsoft.com/keys/microsoft.asc" | sudo tee /etc/yum.repos.d/vscode.repo > /dev/null',
  'sudo dnf check-update',
  'sudo dnf install -y code',
);
```