Terraform config files

• Terraform file end in the etendsion of .tf or either .tf.json

Terraform supports an alternative syntax that is JSON-compatible Useful for generating configurations programmatically

• terraform

Variable definitions files

Allows to decle mulitple varaibles at once - Named .tfvars or tfvars.json

Env variables

• Variables staring with TF_VAR will be loaded

export TF_VAR_image_id: ami-abc123

Loading input varaibles

• Prioriority
  1. Env Vars
  2. terraform.tfvars
  3. terraform.tfvars.json
  4. -var and -var-file