How do I generate SSH keypairs for secure EC2 instance access?

In this guide, we will generate SSH keypairs for secure access to AWS EC2 instances using Pulumi. This involves creating an EC2 KeyPair resource in AWS, which will be used to securely connect to your EC2 instances via SSH.

Steps:

1. Install Pulumi and configure AWS CLI: Ensure that you have Pulumi installed and configured with your AWS credentials.
2. Create a new Pulumi project: Initialize a new Pulumi project if you haven’t already.
3. Add the necessary Pulumi packages: Ensure you have the Pulumi AWS package installed.
4. Write the Pulumi program: Define the EC2 KeyPair resource and output the generated key material.

Here is the complete Pulumi program in TypeScript:

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Define a new SSH KeyPair
const keyPair = new aws.ec2.KeyPair("my-keypair", {
    keyName: "my-keypair",
    publicKey: "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAr... your-public-key ...",
});

// Export the KeyPair name and the public key
export const keyPairName = keyPair.keyName;
export const keyPairPublicKey = keyPair.publicKey;

Key Points:

• KeyPair Resource: The aws.ec2.KeyPair resource is used to create an SSH key pair in AWS.
• Key Material: The publicKey property should be replaced with your actual public key.
• Exports: The keyPairName and keyPairPublicKey are exported for reference.

Summary:

We have created an SSH KeyPair for AWS EC2 instances using Pulumi. This KeyPair can be used to securely access EC2 instances via SSH. Replace the placeholder public key with your actual public key to ensure secure access.