DevOps Classroomnotes 27/Jul/2023

Infrastructure as a Code (IaC)

  • This allows us to declare the infrastructure i.e. we would represent our needs in some format and the tool does the rest of creation/deletion/updating the resources.
  • We deal with declarative language and desired state.

Infra Provisioning

  • This is about a tool which lets you express your infrastructure as a code and manages multiple environments and reusability


  • This is infra provisioning tool and supports infrastructure as code, terraform uses Hashicorp configuration language HCL

Ways of Working with Terraform (First version)

  • Create the infrastructure manually atleast once as this helps
    • in figuring out inputs to be passed.
    • order of creation
    • every resource to be part of architecture
  • Figure out the right provider and resources

Syntaxes in Terraform

  • Provider: Refer Here for official docs
    • syntax
      provider '<name-of-provider>' {
      arg-name-1 = arg-value-1
      arg-name-n = arg-value-n
    • Example
      provider "aws" {
      region = "us-west-2"
    • Generally we need to configure credentials for providers as well.
  • resource: This represents the infrastructural element to be created Refer Here

    • syntax
      resource "<resource_type>" "name" {
      arg-name-1 = arg-value-1
      arg-name-n = arg-value-n
    • Example
      resource "aws_instance" "fromtf" {
      ami = "ami-03f65b8614a860c29"
      tags = {
      Name ="from terraform"
      key_name = "my_id_rsa"
      vpc_security_group_ids = ["sg-05adaf452b268c335"]
      instance_type = "t2.micro"</li>
    • Installing terraform Refer Here
    • Commands
    choco install vscode terraform -y



    • Windows: Refer Here for installing necessary softwares
    • Mac:
      • Homebrew Refer Here
      • git brew install git
      • visual studio code brew install --cask visual-studio-code
      • terraform brew install terraform
      • azure cli brew install azure-cli

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