1.8 KiB

Raw Blame History

Terraform Workshop

What is Terraform

IaC (Infrastructure as Code) framework which enables programatic definition, deployment and management of infrastructure resources for cloud and on-premises in a declarative manner. It targets all major cloud platforms (GCP, AWS, Azure, DO etc.)

Why do We Need it

Standardization of deployment to ensure a consistent state
- Version control
- Deploying an additional clone env for testing
Easier auditability to improve quality and security
- Modular - reuse & ease of understanding
- Resource Graph (dependency graph + parallel execution when possible)
- Version control
Enables use of hardened deployment pipelines
Enables immutable infrastructure

Human-Readible Configuration Language

HashiCorp Configuration Language (HCL) or JSON

provider "aws" {
  region = "us-west-2"
}

resource "aws_instance" "example" {
  ami           = "ami-0c55b159cbfafe1f0"  # Amazon Linux 2 AMI ID
  instance_type = "t2.micro"

  tags = {
    Name = "HelloWorldEC2Instance"
  }
}

output "instance_public_ip" {
  value = aws_instance.example.public_ip
}

Workflow

Write your configuration file
Use the the terraform plan action to simulate deployment of resources and assess the outcome
Use terraform apply to actually deploy resources

Exercise

Set up local credentials for your cloud platform of choice
Write a file that deploys an EC2 instance
Use terraform plan and terraform apply in order to deploy the resource
Remove the resource by updating your configuration file and using terraform plan and terraform apply

Extend Configuration

Add a VPC
Define security group that limits ingress and egress to port 22
Add SSH key(s) which may connect to the instance

1.8 KiB Raw Blame History