Getting Start With Terraform

#cloud #terraform #gcp #infrastructureascode

Step 1

To getting start with Terraform You need to install

Terraform Lates Version (Terraform v1.5.7)
Gcloud Latest Version (Google Cloud SDK 447.0.0)

To check the installation is completed or not try these commands

terraform -version
gcloud --version
The commands will throw the versions number

Step 2

Open VS Code
Create a new folder give name whatever you want (eg : Infra )
Inside the folder create main.tf file
Also create provider.tf file

Bonus Tip! : Install HashiCorp Terraform Extension in Vs code for auto suggesion

Before jumping into the Step 3 There are certain things to know

The main.tf is the file where we describe the resources such as the region, zone, machine-type, startup-script and all
The provider.tf file will provide the support materials such as the project id , version credentials etc etc to the main.tf file

Step 3

Go to registry.terraform
Inside that you will find a USE PROVIDER Button click that and copy paste the code inside the provider.tf file

or copy and paste the below one

terraform {
  required_providers {
    google = {
      source = "hashicorp/google"
      version = "4.83.0"
    }
  }
}

provider "google" {
  project = "YOUR PROJECT ID"
  region = "us-central1"
  zone = "us-central1-a"
  credentials = ""
}

Here you can change the
- project
- region
- zone
- credentials

- For the credentials you need to generate the key file

Step 4

Follow the Steps for Generating key

Go to your gcloud console
Go to IAM & Admin the click Service account
Inside Service account
Click manage key inside the 3 dots

Then Press Add Key The click the Create new key

It will ask for json format click that and download

Step 5

Rename the file as keys.json
copy and paste the keys.json file into the project directory
give the file path to credentials

Step 6

Copy and paste the below code template inside main.tf file

resource "google_compute_instance" "vm-from-terraform" {
    name = "vm-from-terraform"
    machine_type = "e2-medium"
    zone = "us-central1-a"
    boot_disk {
      initialize_params {
        image = "debian-cloud/debian-11"
        labels = {
          my_label = "value"
        }
      }
    }
    network_interface {
      network = "default"
    }
    metadata_startup_script = "echo hi > /test.txt"
    #allow_stopping_for_update = true
}

Step 7