Terraform tutorials

Various files, derived from content here.

Mostly exists to document a quick start to using Terraform.

Begin with initializing a folder with the needed terraform plugins and providers:

terraform init

This will create a .terraform folder with needed libraries, as well as a lockfile.

Afterwards, do a quick format of the terraform scripts via:

terraform fmt

Terraform also offers

terraform validate

If successful, the following will appear:

Success! The configuration is valid.

To apply the configuration to production, do the following:

terraform apply

If that worked, then take a quick look at live:

terraform show

Assuming all the infra changes were made, then.

List the current state of this configuration:

terraform state list

Remove all resources and components associated with this configuration:

terraform destroy

Once you have infrastructure provisioned, you can query the outputs of those like so:

terraform output

Variables for your scripts can used, if needed.

Add something like the following to your script, setting a safe default:

variable "instance_name" {
  description = "Value of the Name tag for the EC2 instance"
  type        = string
  default     = "TerraformTutorial"
}

Afterwards, the variable can be set at the commandline like so:

terraform apply -var "instance_name=BrandNewInstance"

To login to Terraform Cloud, type the following:

terraform login

Terraform will then request an API token for app.terraform.io using your browser.

rbisewski/terraform-tutorials