Terraform #

• Terraform is HashiCorp’s infrastructure as code tool. It lets you define resources and infrastructure in human-readable, declarative configuration files, and manages your infrastructure’s lifecycle.
• It supports multiple cloud providers - AWS, Azure, GCP, Oracle Cloud, and others (1K+ providers).
• Click here to access the tutorial.

Notes #

• Terraform Registry for providers, modules and libraries.
• Terraform Language- sing a JSON-like configuration language called HCL (HashiCorp Configuration Language), its backend is written in Golang.
• Use VS Code extension for syntax highlights
• When you applied your configuration, Terraform writes data into a state file called terraform.tfstate. It uses JSON format to store data. State can be stored in Terraform Cloud or Cloud-providers like AWS S3 or Google Cloud Storage. Click here to read more about remote state.

Local Installation #

brew tap hashicorp/tap
brew update
brew install hashicorp/tap/terraform
terraform -help
terraform -install-autocomplete
terraform fmt
terraform validate

Run Terraform to create a Docker container #

• Create a file “main.tf”

terraform {
  required_providers {
    docker = {
      source  = "kreuzwerker/docker"
      version = "~> 2.13.0"
    }
  }
}

provider "docker" {}

resource "docker_image" "nginx" {
  name         = "nginx:latest"
  keep_locally = false
}

resource "docker_container" "nginx" {
  image = docker_image.nginx.latest
  name  = "tutorial"
  ports {
    internal = 80
    external = 8000
  }
}

• Run the following command:

terraform init
terraform plan
terraform apply
terraform destroy