DevOps Classroom notes 06/Apr/2026

Terraform contd

Scenario 1: Creating a network with subnets in AWS

• To write terraform templates we need to understand HCL (Hashicorp configuration language)
• Datatypes
  • string
  • number
  • boolean
  • list
  • set
  • object/map

Manual Creating a network in AWS

• Prompt

You are an expert in AWS

I want to understand how to create a vpc in AWS
Explain the inputs which we need to provide

Guide me to create vpc using console

Working with terraform

• we will be following google style guide for terraform
• create a new folder vpc_aws
• Create a new file main.tf
• Terraform block: using this block we can restrict
  • which version of terraform is required to run this template
  • which version of providers needs to be used
• For version restrictions we have expression in terraform version constraint syntax
• After writing template try to format
  • terraform fmt
  • If terraform extension in vscode is installed, you can use format
• We need to create vpc resource, to find any resource
  • google terraform <provider> <resource> => terraform aws vpc
    
  • Use provider docs (watch classroom recording)
  • Terraform resource block
  • Type => <provider>_<service|functionality>
  • For every resource we can pass arguments, not all arguments are required
  • Now lets fmt and then validate
    
• Refer Here for the changes done