GCS backend configuration in Terraform - Mini Project: Build & Apply

GCS backend configuration

📖 Scenario: You are setting up Terraform to store its state files securely in Google Cloud Storage (GCS). This helps your team share infrastructure state safely and avoid conflicts.

🎯 Goal: Configure Terraform to use a GCS bucket as its backend for storing state files.

📋 What You'll Learn

Create a Terraform configuration file named main.tf.

Define a terraform block with a backend of type gcs.

Set the bucket to my-terraform-state-bucket.

Set the prefix to terraform/state.

💡 Why This Matters

🌍 Real World

Teams use GCS backend to share Terraform state safely and enable collaboration.

💼 Career

Knowing how to configure Terraform backends is essential for cloud infrastructure engineers and DevOps professionals.

1

Create the Terraform configuration file

Create a file named main.tf and add an empty terraform block.

Terraform

# Your code here
terraform {
}

Need a hint?

Start by writing the terraform block with opening and closing braces.

2

Add the backend configuration block

Inside the terraform block, add a backend block with type gcs.

Terraform

terraform {
  # Add backend block here
}

Need a hint?

Use the syntax backend "gcs" { } inside the terraform block.

3

Set the bucket name in the backend

Inside the backend "gcs" block, add the line bucket = "my-terraform-state-bucket".

Terraform

terraform {
  backend "gcs" {
    # Set bucket name here
  }
}

Need a hint?

Add the bucket attribute with the exact bucket name inside the backend block.

4

Add the prefix for state files

Inside the backend "gcs" block, add the line prefix = "terraform/state" below the bucket line.

Terraform

terraform {
  backend "gcs" {
    bucket = "my-terraform-state-bucket"
    # Add prefix here
  }
}

Need a hint?

Add the prefix attribute with the exact value inside the backend block.