Terrafrom - Getting Started

Terraform Object Types

1. Providers
2. Resources
3. Data Sources

General Block Syntax

Resource

resource "aws_instance" "web_server" {
    name = "web-server"
    ebs_volume {
        size = 40
    }
}

Provider

provide "aws" {
    access_key = ""
    secret_key = ""
    region = "us-east-1"
}

Data

data "aws_ssm_parameter" "ami" {
    name = "/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2"
}

Object Reference

aws_instance.web_server.name

Input Variables

variable "aws_region" {
    type = string
    description = "Region to use for AWS resources"
    default = "us-east-1"
    sensitive = false    
}

Input Variable Reference

var.aws_region

Local Variables

locals {
    instance_prefix = "globo"
    common_tags = {
        company = "HeeZJee"
        project = var.project
        billing = var.billing
    }
}

Local Variable Reference

local.instance_prefix
local.common_tags.company

Output Variables

output "public_dns_hostname" {
    value = aws_instance.web_server.public_dns
    description = "Public DNS hostname web server"
}

Data Types

1. Primitive: string, number, boolean
2. Collection: list, set, map
3. Structural: tuple, object