How Do I Build a GCP Compute Firewall With Pulumi Using TypeScript?

Introduction

In this guide, we will create a Google Cloud Platform (GCP) Compute Firewall using Pulumi with TypeScript. Pulumi is an Infrastructure as Code (IaC) tool that allows you to define and manage cloud resources using familiar programming languages. The key service involved in this solution is the Google Cloud Firewall, which helps you control the traffic to and from your virtual machine instances.

Step-by-Step Explanation

Step 1: Set Up Pulumi and GCP

1. Install Pulumi CLI if you haven’t already.
2. Set up your GCP project and authenticate using the gcloud CLI.
3. Create a new Pulumi project using pulumi new and select the TypeScript template.

Step 2: Install Pulumi GCP Package

Install the Pulumi GCP package in your project by running:

npm install @pulumi/gcp

Step 3: Define the Firewall Rules

In your Pulumi program, import the necessary modules and define the firewall rules. You will need to specify the network, direction, priority, and allowed/denied traffic.

Step 4: Create the Firewall Resource

Use the gcp.compute.Firewall class to create the firewall resource with the defined rules.

Step 5: Deploy the Stack

Run pulumi up to deploy the stack and create the firewall in your GCP project.

Key Points

• Pulumi allows you to manage cloud resources using familiar programming languages.
• The GCP Firewall helps control traffic to and from your VM instances.
• Define firewall rules carefully to ensure the security of your infrastructure.
• Use the pulumi up command to deploy your changes to the cloud.

Conclusion

By following this guide, you have successfully created a GCP Compute Firewall using Pulumi and TypeScript. This approach allows you to manage your cloud infrastructure programmatically, making it easier to maintain and scale. Pulumi’s integration with GCP provides a powerful and flexible way to define and manage your cloud resources.

Full Code Example

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

// Create a new GCP network
const network = new gcp.compute.Network("network", {
    autoCreateSubnetworks: true,
});

// Create a firewall rule
const firewall = new gcp.compute.Firewall("firewall", {
    network: network.id,
    allows: [{
        protocol: "tcp",
        ports: ["22", "80", "443"],
    }],
    sourceRanges: ["0.0.0.0/0"],
    direction: "INGRESS",
    priority: 1000,
    targetTags: ["web"],
});

// Export the name and self link of the firewall
export const firewallName = firewall.name;
export const firewallSelfLink = firewall.selfLink;