feat: Add option to enable io scaling

Fixes #5

Author: timdeluxe

README.md

@@ -173,9 +173,17 @@ Type: `bool`
 
 Default: `true`
 
+### database\_storage\_io\_scaling\_enabled
+
+Description: Enables IOPS auto scaling. If true, database\_storage\_iops will be ignored
+
+Type: `bool`
+
+Default: `false`
+
 ### database\_storage\_iops
 
-Description: IO operations per second
+Description: IO operations per second. If database\_storage\_io\_scaling\_enabled is true, this variable will be ignored
 
 Type: `number`
 

server.tf

@@ -6,9 +6,10 @@ resource "azurerm_mysql_flexible_server" "server" {
   administrator_password = var.admin_password
   sku_name               = var.database_host_sku
   storage {
-    size_gb           = var.database_storage_size
-    auto_grow_enabled = var.database_storage_autogrow
-    iops              = var.database_storage_iops
+    size_gb            = var.database_storage_size
+    auto_grow_enabled  = var.database_storage_autogrow
+    iops               = var.database_storage_io_scaling_enabled != true ? var.database_storage_iops : null
+    io_scaling_enabled = var.database_storage_io_scaling_enabled
   }
   version               = var.database_version
   backup_retention_days = var.backup_retention_days

vars.tf

@@ -87,7 +87,13 @@ variable "database_storage_autogrow" {
 variable "database_storage_iops" {
   type        = number
   default     = 3600
-  description = "IO operations per second"
+  description = "IO operations per second. If database_storage_io_scaling_enabled is true, this variable will be ignored"
+}
+
+variable "database_storage_io_scaling_enabled" {
+  type        = bool
+  default     = false
+  description = "Enables IOPS auto scaling. If true, database_storage_iops will be ignored"
 }
 
 variable "allowed_ips" {