We've now seen how to build and change infrastructure. Before we move on to creating multiple resources and showing resource dependencies, we're going to go over how to completely destroy the Terraform-managed infrastructure.
Destroying your infrastructure is a rare event in production environments. But if you're using Terraform to spin up multiple environments such as development, test, QA environments, then destroying is a useful action.
Resources can be destroyed using the
terraform destroy command, which is
terraform apply but it behaves as if all of the resources have
been removed from the configuration.
$ terraform destroy # ... - aws_instance.example
- prefix indicates that the instance will be destroyed. As with apply,
Terraform shows its execution plan and waits for approval before making any
yes to execute this plan and destroy the infrastructure:
# ... aws_instance.example: Destroying... Apply complete! Resources: 0 added, 0 changed, 1 destroyed. # ...
Just like with
apply, Terraform determines the order in which
things must be destroyed. In this case there was only one resource, so no
ordering was necessary. In more complicated cases with multiple resources,
Terraform will destroy them in a suitable order to respect dependencies,
as we'll see later in this guide.