Terraform Console and Output

  1. Installing Terraform
  2. What is Terraform and Why do we need it?
  3. Terraform Commands
  4. Hashicorp Configuration Language - HCL
  5. Tainting and Untainting Resources

We will use the Terraform Console to view various outputs that we can use for our scripts. The Terraform Console is extremely useful for troubleshooting and planning deployments.

Terraform commands:
console: Interactive console for Terraform interpolations

Set up the environment:

cd terraform/basics
Working with the Terraform console
Redeploy the Ghost image and container:

terraform apply
Show the Terraform resources:

terraform show
Start the Terraform console:

terraform console
Type the following in the console to get the container's name:

docker_container.container_id.name
Type the following in the console to get the container's IP:

docker_container.container_id.ip_address
Break out of the Terraform console by using Ctrl+C.

Destroy the environment:

terraform destroy
Output the name and IP of the Ghost blog container
Edit main.tf:

vi main.tf
main.tf contents:

# Download the latest Ghost Image
resource "docker_image" "image_id" {
  name = "ghost:latest"
}
# Start the Container
resource "docker_container" "container_id" {
  name  = "blog"
  image = "${docker_image.image_id.latest}"
  ports {
    internal = "2368"
    external = "80"
  }
}
#Output the IP Address of the Container
output "ip_address" {
  value       = "${docker_container.container_id.ip_address}"
  description = "The IP for the container."
}
#Output the Name of the Container
output "container_name" {
  value       = "${docker_container.container_id.name}"
  description = "The name of the container."
}
Validate changes:

terraform validate
Apply changes to get output:

terraform apply
Cleaning up the environment
Reset the environment:

terraform destroy

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