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Frontend VM Load Balancer Setup Instructions

This documentation provides a step-by-step guide to setting up a load balancer for three virtual machines (VMs) running front-end applications on Google Cloud Platform (GCP).

Prerequisites

  • A Google Cloud account
  • Billing enabled on your GCP project
  • Basic knowledge of Google Cloud Console and command-line interface
  • Completing frontend VM setup guide

Steps Overview

  1. Create an instance template.
  2. Create instance groups.
  3. Set up the VMs.
  4. Create the load balancer.

Step 1: Create Instance Template

  1. Navigate to Compute Engine:

    • Go to the Google Cloud Console.
    • Navigate to Compute Engine > Images.
    • Click Create Image.
    • In the Name field, provide a name for your image.
    • Choose the Source Disk as your Frontend VM's disk which was created at frontend VM setup.
    • Click Create to initiate the image creation process.

  2. Create Instance Template:

    • Click on Create Instance Template.
    • Configure your instance template (name, machine type, etc.).
    • Under Boot disk, select the image you created at step 1.
    • Click Create to save the template.

Step 2: Create Instance Groups

  1. Navigate to Compute Engine > Instance groups

  2. Create Instance Group:

    • Click on Create Instance Group.
    • Configure your instance group (name, location, etc.).
    • Specify the instance template created above.
    • Configure Auto-scaling as you wish.
    • Click Create.

Step 3: Create Load Balancer

  1. Navigate to Network services > Load balancing

  2. Create Load Balancer:

    • Click on Create Load Balancer.
    • Select HTTP(S) Load Balancing and click Start configuration.
    • Select Global Load Balancer.

  3. Configure the Frontend:

    • Under New Frontend Configuration, provide a name.
    • Select HTTP or HTTPS.
    • Configure the IP address and port (use port 80 for HTTP).

  4. Configure the Backend:

    • Under Backends, click Create a backend service.
    • Provide a name for the backend service.
    • Select the instance group you created earlier.
    • Set the port number your application is running on (e.g., port 80).
    • Configure health checks (HTTP check on port 80).

  5. Finalize and Create:

    • Review the configuration.
    • Click Create.

You have successfully set up a load balancer for your front-end applications on Google Cloud using three virtual machines. This setup ensures high availability and efficient distribution of traffic to your application.