How to configure environment variables in Hashicorp Terraform
问题 I'm quite new to Terraform, though I have gone through all of the instructional modules available on Hashicorp's site. Currently, I'm struggling with understanding how to set up environment variables. I know how to reference variables in the main.tf config ( access_key = "${var.access_key}" ), and I know how to save that access key to a separate file and reference that, but what I don't understand (and can't find any documentation/instruction on) is how to set up environment variables so I