LAB02-Resources-Basic-EC2.md

LAB-02: Resources => Provision Basic EC2 (Ubuntu 22.04)

This scenario shows:

• how to create EC2 with Ubuntu 22.04

Code: https://github.com/omerbsezer/Fast-Terraform/blob/main/labs/basic-resource-ec2-ubuntu/main.tf

Prerequisite

• You should have a look following lab:
  • LAB-00: Terraform Install, AWS Configuration with Terraform

Steps

• Create main.tf and copy the code

# main.tf
terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 4.16"
    }
  }

  required_version = ">= 1.2.0"
}

provider "aws" {
	region = "eu-central-1"
}

resource "aws_instance" "instance" {
	ami           = "ami-0d1ddd83282187d18" # Ubuntu 22.04 eu-central-1 Frankfurt
	instance_type = "t2.nano"

	tags = {
		Name = "Basic Instance"
	}
}

Code: https://github.com/omerbsezer/Fast-Terraform/blob/main/labs/basic-resource-ec2-ubuntu/main.tf

• Run init command:

terraform init

• Init command downloads required executable files from Terraform (.terraform):

• Validate file:

terraform validate

• Run plan command:

terraform plan

• Run apply command to create resources. Then, Terraform asks to confirm, write "yes":

terraform apply

• It creates the resources that are defined in the main.tf:

• After apply command, terraform creates state files:

• On AWS, go to EC2 services:

• On EC2 Dashboard:

• Security Group Configuration is configured as default, inbound ports are defined as "all" (this is not good for security, but for now, it's ok!), egress ports are defined as "all"

• Network Configuration is configured as default, but availability zone is defined as "eu-central-1"

• Storage Configuration is configured as default, 8GB EBS (Elastic Block Storage) is attached:

• Delete all resources. Then, Terraform asks to confirm, write "yes"::

terraform destroy

• On AWS EC2 Instances, EC2 was terminated, it'll be disappeared in max. 1 hour. Once an EC2 is terminated, that EC2 is deleted permanently:

• Destroy command is important to terminate the resources.
• If you forget the destroy command, your EC2 runs until termination and you MUST pay the usage price of EC2.

• It is really IMPORTANT to check whether unnecessary paid services are closed or not.