Support for CE/OSS to TFC Migrations: Variables

[Josh-Tracy]

Context

Part of migrating from Terraform Community Edition to Terraform Cloud or Enterprise is also migrating terraform inputs / variables in some fashion. A feature to assist users in making existing .tfvars files compatible with TFC/TFE runs or creating variables to be managed into TFC/TFE is required.

Per This Link Although Terraform Cloud uses variables from terraform.tfvars, Terraform Enterprise currently ignores this file. A feature to locate all *.tfvars files in a given config_path could be created. The feature could rename the file to terraform.auto.tfvars for consistency across the board between TFC and TFE.

An additional feature in the form of a command or flad to an existing command could be used to allow users to specify the path to an existing vars file and the go-tfe sdk could be used to create those variables in the TFC/TFE workspace.

Decision

• A command will be created for converting all *.tfvars files to terraform.auto.tfvars files.
• The tfm core init-repos commmand will be updated to identify and add the tfvars files in each config_path.
• A flag simliar to -variables-path /path/to/terraform.tfvars will be created to convert variables to workspaces managed variables.

Consequences

Users will be able to modify or create terraform variables for TFC/TFE support at scale.