# Deploying Your First Terraform Configuration

> Markdown source of <https://docs.calebsargeant.com/computing/terraform/getting-started/first-terraform-configuration/>.

## Terraform Components

- Terraform executable
- Terraform files
- Terraform plugins
- Terraform state

**Variables**

``` text
variable "aws_access_key" {}
variable "aws_secret_key" {}
variable "aws_region" {
  default = "us-east-1"
}
```

**Provider**

``` text
provider "aws" {
access_key = "var.access_key"
secret_key = "var.secret_key"
region = "var.aws_region"
}
```

**Data**

``` text
data "aws_ami" "alx" {
most_recent = true
owners = ["amazon"]
filters {}
}
```

**Resource**

``` text
resource "aws_instance" "ex" {
ami = "data.aws_ami.alx.id"
instance_type = "t2.micro"
}
```

**Output**

``` text
output "aws_public_ip" {
value = "aws_instance.ex.public_dns"
}
```

## Examining the Configuration

[module_three.tf](https://github.com/CalebSargeant/Getting-Started-Terraform/blob/master/m3/module_three.tf)

## Working with Variables

[terraform.tfvars.example](https://github.com/CalebSargeant/Getting-Started-Terraform/blob/master/m3/terraform.tfvars.example)

## Deploying the Configuration

``` bash
# List terraform commands
terraform

# Get the terraform version
terraform version

# Get AWS plugin and initialise configuration
terraform init

# Look at config files in directory and load variables
terraform plan -out m3.tfplan

# Executing what's in the plan
terraform apply "m3.tfplan"

# Looks at state file and what resources were created and destroys them
terraform destroy
```