DevOps Classroom Series – 15/Dec/2021

Installing Terraform

• Terraform is an open-source project developed in Google’s GO language
• Installing Terraform is much like downloading an exe/executable on your system adding it to the PATH variable and using it
• Mac users => Install Homebrew => Refer Here

# Launch terminal 
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

• Windows Users => Install Chocolatey => Refer Here

# Launch Powershell as admin
Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))
Close your terminal/Powershell and relaunch as admin

• Install Terraform
  • Windows => choco => choco install terraform -y
  • Mac => brew => brew install terraform Refer Here

Terraform Terminologies

• Provider: This specifies terraform where to create infrastructure
• Resource: Resources are the core elements of your infrastructure.
  • The inputs which we specify about the resource are called as arguments
  • When we create resources using terraform they specify some outputs of the resource which are called as attributes
• DataSource: This helps us in querying information (about resources) from terraform configuration.

Writing a Terraform Configuration file

• We need to specify the provider
  • Syntax:

  provider "<name-of-provider>" {
      arg1 = "value1"
      ...
      ..
      argn = "value2"
  }
  

• We need to find a right resource from the provider

resource "<resource-type>" "<resource-name>" {
    arg1 = "value1"
      ...
      ..
      argn = "value2"

}

• Hello World Configuration

provider "aws" {
    region = "us-west-2"
}

resource "aws_s3_bucket" "my_bucket" {
    bucket = "my-tf-qt-s3-bucket"
    acl = "private"
}

Activity: From Terraform Create an S3 bucket in AWS Cloud

• Manual Steps:
  • Login into AWS Console
  • Follow the steps
• Approach in Terraform
  • Find the Provider:
  • How to configure authentication
  • Find a resource in AWS Provider to Create S3 bucket