fix: default policy file path for admin to null, and use built-in policy if value stays null

README.md

@@ -48,7 +48,7 @@ No modules.
 |------|-------------|------|---------|:--------:|
 | <a name="input_global_approle_mount"></a> [global_approle_mount](#input_global_approle_mount) | The mount path for the global AppRole authentication method | `string` | `"approle"` | no |
 | <a name="input_tenant_additional_roles"></a> [tenant_additional_roles](#input_tenant_additional_roles) | A map of additional role names, with the path to the associated policy file to add for this tenant.<br>    A separate approle auth method is created for this tenant (mounted at auth/<prefix>-approle) including all the roles declared in this variable.<br>    The variable should look like:<br>    tenant_additional_roles = {<br>      devs = {<br>        policy_file = "/some/path/to/policy.hcl"<br>      }<br>      admins = {...}<br>    } | <pre>map(object({<br>    policy_file = string<br>  }))</pre> | `{}` | no |
-| <a name="input_tenant_admin_policy_file"></a> [tenant_admin_policy_file](#input_tenant_admin_policy_file) | The path to the admin policy file for this tenant | `string` | `"./policies/tenant-admins.policy.hcl"` | no |
+| <a name="input_tenant_admin_policy_file"></a> [tenant_admin_policy_file](#input_tenant_admin_policy_file) | The path to the admin policy file for this tenant | `string` | `null` | no |
 | <a name="input_tenant_name"></a> [tenant_name](#input_tenant_name) | The name of the tenant you want to create | `string` | n/a | yes |
 | <a name="input_tenant_prefix"></a> [tenant_prefix](#input_tenant_prefix) | The prefix to use for the tenant in vault (this will prefix mount points, policies, etc..) | `string` | n/a | yes |
 

admin_approle.tf

@@ -22,5 +22,5 @@ resource "vault_identity_entity" "tenant_admin" {
 
 resource "vault_policy" "tenant_admin" {
   name   = "${var.tenant_name}-admin"
-  policy = file(var.tenant_admin_policy_file)
+  policy = var.tenant_admin_policy_file == null ? file("${path.module}/policies/tenant-admins.policy.hcl") : file(var.tenant_admin_policy_file)
 }

variables.tf

@@ -20,7 +20,7 @@ variable "tenant_prefix" {
 
 variable "tenant_admin_policy_file" {
   type        = string
-  default     = "./policies/tenant-admins.policy.hcl"
+  default     = null
   description = "The path to the admin policy file for this tenant"
 }