DevOps Classroom notes 22/Sep/2024

Azure Ntier Architecture

• Overview
  
• Create network and subnets Refer Here
• Create a webnsg where
  • 80,443 and 22 port are open from anywhere
• Refer Here for the changes done to add web nsg
• Now add app nsg which opens 8000 port within network Refer Here for changes done
• create a public ip address Refer Here for the changes
• create a network interface in web subnet with public ip and web nsg attached Refer Here for changes
• now attach network interface to the vm
• while creating the vm specify
  • size
  • os image
• Refer Here for official docs of microsoft azure to create linux vm from terraform
• Refer Here

Datasource

• We can use Datasource in terraform to fetch the information about resource
• Refer Here for official docs
• View the classroom recording for examples

terraform {
  required_providers {
    azurerm = {
      source  = "hashicorp/azurerm"
      version = "4.3.0"
    }
    aws = {
      source  = "hashicorp/aws"
      version = "5.68.0"
    }
  }
}

provider "azurerm" {
  features {}
}

provider "aws" {
}

# lets fetch default vpc id of mumbai region
data "aws_vpc" "default" {
  default = true
}

output "default-vpc-id" {
  value = data.aws_vpc.default.id
}

data "azurerm_network_security_group" "web" {
    name = "web"
    resource_group_name = "ntier"

}

output "nsg_id" {
    value = data.azurerm_network_security_group.web.id
}

# get the resource group name and location and create a new network
data "azurerm_resource_group" "base" {
    name = "ntier1"
}

resource "azurerm_virtual_network" "new" {
    name = "new"
    resource_group_name = data.azurerm_resource_group.base.name
    location = data.azurerm_resource_group.base.location
    address_space = ["10.0.0.0/16"]

}