Getting Start With Terraform

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

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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

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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

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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

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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

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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
}

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Step 7

• Perform The following Commands

terraform --init

terraform --plan

terraform --apply


• Check the gcloud console if the new VM is present or not