examples: remove random provider from live safe dns record

examples/live_safe_dns_record/README.md

@@ -6,9 +6,9 @@ then you remove it with `terraform destroy`.
 
 ## Safety model
 
-- Creates a **new unique subdomain** every run using `random_id`.
+- Creates a **new disposable subdomain** using configurable `test_prefix` and `test_suffix` values.
 - Hostname format is:
-  - `<test_prefix>-<random_hex>.<dynu_root_domain>`
+  - `<test_prefix>-<test_suffix>.<dynu_root_domain>`
 - Creates exactly one record:
   - `A` record, default content `198.51.100.10`, default TTL `300`.
 - Does **not** import, update, replace, or delete existing production hostnames/records.
@@ -27,27 +27,30 @@ then you remove it with `terraform destroy`.
 
 ## Workflow
 
+This example intentionally uses only the `dynu/dynu` provider (no `hashicorp/random`).
+If you want per-run uniqueness, pass `test_suffix` explicitly.
+
 ```bash
 go build -o terraform-provider-dynu
 cd examples/live_safe_dns_record
 cp terraform.tfvars.example terraform.tfvars
-# edit terraform.tfvars and set only dynu_root_domain
+# edit terraform.tfvars and set dynu_root_domain (and optionally test_suffix)
 terraform validate
-terraform plan
+terraform plan -var="test_suffix=$(date +%s)"
-terraform apply
+terraform apply -var="test_suffix=$(date +%s)"
 ```
 
-After apply, inspect outputs to confirm the generated disposable hostname and record ID,
+After apply, inspect outputs to confirm the disposable hostname and record ID,
 then clean up:
 
 ```bash
-terraform destroy
+terraform destroy -var="test_suffix=$(date +%s)"
 ```
 
 ## Cleanup guidance
 
 - Always run `terraform destroy` after testing.
 - If apply is interrupted or partially succeeds, rerun `terraform destroy` from this same
-  directory with the same `terraform.tfvars` and state files.
+  directory with the same `terraform.tfvars`, CLI vars, and state files.
 - If re-running without destroying first, Terraform may keep state for the previous
   disposable record until it is destroyed.

examples/live_safe_dns_record/main.tf

@@ -3,11 +3,6 @@ terraform {
     dynu = {
       source = "dynu/dynu"
     }
-
-    random = {
-      source  = "hashicorp/random"
-      version = ">= 3.6.0"
-    }
   }
 }
 
@@ -15,12 +10,8 @@ provider "dynu" {
   api_key = var.dynu_api_key
 }
 
-resource "random_id" "suffix" {
-  byte_length = 4
-}
-
 locals {
-  disposable_label    = "${var.test_prefix}-${lower(random_id.suffix.hex)}"
+  disposable_label    = "${var.test_prefix}-${var.test_suffix}"
   disposable_hostname = "${local.disposable_label}.${var.dynu_root_domain}"
 }
 

examples/live_safe_dns_record/outputs.tf

@@ -1,5 +1,5 @@
 output "disposable_hostname" {
-  description = "Generated unique disposable hostname created by this run."
+  description = "Disposable hostname created by this run."
   value       = local.disposable_hostname
 }
 

examples/live_safe_dns_record/terraform.tfvars.example

@@ -2,9 +2,10 @@
 # Do NOT put an existing full production hostname here.
 dynu_root_domain = "example.com"
 
-# Optional prefix for generated disposable hostname labels.
+# Optional naming for disposable hostname labels.
-# Final hostname format: <test_prefix>-<random_hex>.<dynu_root_domain>
+# Final hostname format: <test_prefix>-<test_suffix>.<dynu_root_domain>
 test_prefix = "tfacc"
+test_suffix = "manual"
 
 # Optional: documentation/test IP for disposable A record content.
 test_ip = "198.51.100.10"

examples/live_safe_dns_record/variables.tf

@@ -16,6 +16,12 @@ variable "test_prefix" {
   default     = "tfacc"
 }
 
+variable "test_suffix" {
+  description = "Suffix for disposable hostname uniqueness (set explicitly per run if needed)."
+  type        = string
+  default     = "manual"
+}
+
 variable "test_ip" {
   description = "Safe documentation/test IPv4 value for the disposable A record."
   type        = string