Terraform Variable Inheritance

In Terraform, environment variables take the least precedence, so they will not override variables defined in *.tf or *.tfvars files.

Variables defined on the project and environment entities (environment values override project values) will be passed into the command line - i.e. with highest precedence.

The user can still define inputs as environment values (i.e. TF_VAR_*) but as noted above they will take least precedence.

The order of variable precedence in Code Pipes is:

1. TF inputs defined as ENV variables (TF_VAR_*) on Project entity
2. TF inputs defined as ENV variables (TF_VAR_*) on Environment entity
3. TF variable default values defined in \*.tf files in repo
4. TF variable values defined in \*.tfvars files in repo
5. TF variables defined on Project entity
6. TF variables defined on Environment entity