Terraform CLI configuration overview

You can configure the Terraform CLI in global settings, which are separate from any Terraform configuration and which apply across all working directories.

The default behavior of the Terraform CLI is suitable in most cases. As a result, most of the global settings relate to advanced or automated workflows, or unusual environmental conditions, such as running Terraform on an air-gapped instance.

• The CLI config file configures provider installation and security features.
• Several environment variables can configure Terraform's inputs and outputs; this includes some alternate ways to provide information that is usually passed on the command line or read from the state of the shell.