How to make "terraform plan" use my config file - azure

Question

I created an Azure service principal
I created a file called azureProviderAndCreds.tf that looks similar to the following:
variable subscription_id {}
variable tenant_id {}
variable client_id {}
variable client_secret {}
provider "azurerm" {
subscription_id = "<my-azure-subscription-id>"
tenant_id = "<tenantid-returned-from-creating-a-service-principal>"
client_id = "<appid-returned-from-creating-a-service-principal>"
client_secret = "<password-returned-from-creating-a-service-principal>"
}
I ran terraform init
I ran terraform plan
When executing terraform plan, the command asks me for the client_id.
I have this value defined in the azureProviderAndCreds.tf file. How do I get Terraform to look at my config file for that info?

Answer 1

I'd read through the docs to get a handle of the input variables basics.
But heres a couple quick things:
You are declaring variables and not actually using them in your provider:
provider "azurerm" {
subscription_id = "${var.subscription_id}"
tenant_id = "${var.tenant_id}"
client_id = "${var.client_id}"
client_secret = "${client_secret}"
}
You could set defaults for your variables when declaring them:
variable subscription_id {
default = "your-subscription-id"
}
Of you could create a .tfvars file like variables.tfvars and pass that when running plan:
subscription_id = "your-subscription-id"
tenant_id = "your-tenant-id"
client_id = "your-client-id"
client_secret = "your-client-secret"
terraform plan -var-file=variables.tfvars