The statement is false because of the absolute term "always". While the default behavior of terraform init is to download providers from the public, internet-facing HashiCorp Terraform Registry, Terraform provides multiple mechanisms for installing providers from other locations. This is essential for operating in air-gapped environments, for security compliance, or for using custom-developed internal providers. Terraform can be configured to install providers from a local filesystem mirror, a private network mirror, or a private registry.

The statement "True" is incorrect because it overlooks Terraform's explicit support for alternative provider installation methods beyond the public internet. The providerinstallation block in the Terraform CLI configuration allows operators to define non-default installation strategies, such as sourcing providers from a local directory (filesystemmirror) or an internal artifact repository (networkmirror), which do not require internet access to the public registry.

1. HashiCorp Terraform Documentation, "Provider Installation": This document explicitly details alternative installation methods. It states, "For air-gapped systems or to ensure you're only using approved providers, you can configure Terraform to use a local provider mirror."

Source: HashiCorp Terraform Official Documentation.

Section: Configuration > Provider Installation > Filesystem Mirrors

2. HashiCorp Terraform Documentation, "CLI Configuration File": This page describes the providerinstallation block, which is the primary mechanism for configuring alternative provider sources. It outlines the filesystemmirror, networkmirror, and direct installation methods.

Source: HashiCorp Terraform Official Documentation.

Section: Configuration > CLI Configuration File > providerinstallation

3. HashiCorp Terraform Documentation, "Provider Sources": This page explains how Terraform determines where to download a provider from, based on its source address. It clarifies that a source address can point to the public registry, a private registry, or a third-party registry.

Source: HashiCorp Terraform Official Documentation.

Section: Configuration > Providers > Provider Sources