Terraform Features introduction

Terraform is an open-source infrastructure as code software tool that provides a consistent CLI workflow to manage hundreds of cloud services. Terraform codifies cloud APIs into declarative configuration files.

https://www.terraform.io

Deliver Infrastructure as Code

Write

Plan

Run terraform plan to check whether the execution plan for a configuration matches your expectations before provisioning or changing infrastructure.


$ terraform plan
An execution plan has been generated and is shown below.

Resource actions are indicated with the following symbols:
+ create

Terraform will perform the following actions:

# aws_ebs_volume.iac_in_action will be created
+ resource “aws_ebs_volume” “iac_in_action” {
+ arn = (known after apply)
+ availability_zone = “us-east-1a”
+ encrypted = (known after apply)
+ id = (known after apply)
+ iops = 1000
+ kms_key_id = (known after apply)
+ size = 100
+ snapshot_id = (known after apply)
+ tags = {
+ “Name” = “Terraform-managed EBS Volume for IaC in Action”
}
+ type = “io1”
}

Plan: 1 to add, 0 to change, 0 to destroy.

Apply

Apply changes to hundreds of cloud providers with terraform apply to reach the desired state of the configuration.

Features


variable "ami_id" {
type = string
description = "AMI ID to use"
default = "ami-09d95fab7fff3776c"
}

variable “instance_type” {
type = string
description = “Instance type to use”
default = “t3.micro”
}

variable “availability_zone” {
type = string
description = “Availability Zone to use”
default = “us-east-1a”
}

Installable modules

Dependency graphing
Easily generate terraform plan, refresh state, and more, with Terraform config dependency graphing.

State management