update code

quickstart/201-mysql-fs-db/main.tf

@@ -1,18 +1,105 @@
+// Generate random value for the Resource Group name
 resource "random_pet" "rg-name" {
   prefix = var.name_prefix
 }
 
+// Generate random value for the name
+resource "random_string" "name" {
+  length  = 8
+  upper   = false
+  lower   = true
+  special = false
+}
+
+// Generate random value for the login password
+resource "random_password" "password" {
+  length           = 8
+  upper            = true
+  lower            = true
+  special          = true
+  override_special = "_"
+}
+
+// Manages the Resource Group where the resource exists
 resource "azurerm_resource_group" "default" {
-  name     = random_pet.rg-name.id
+  name     = "mysqlfsRG-${random_pet.rg-name.id}"
   location = var.location
 }
 
-resource "azurerm_mysql_flexible_server" "default" {
-  name                   = "${var.name_prefix}-server"
-  resource_group_name    = azurerm_resource_group.default.name
-  location               = azurerm_resource_group.default.location
-  administrator_login    = "adminTerraform"
-  administrator_password = "QAZwsx123"
-  sku_name               = "B_Standard_B1s"
-  zone                   = "1"
+// Manages the Virtual Network
+resource "azurerm_virtual_network" "default" {
+  name                = "vnet-${random_string.name.result}"
+  location            = azurerm_resource_group.default.location
+  resource_group_name = azurerm_resource_group.default.name
+  address_space       = ["10.0.0.0/16"]
+}
+
+// Manages the Subnet
+resource "azurerm_subnet" "default" {
+  name                 = "subnet-${random_string.name.result}"
+  resource_group_name  = azurerm_resource_group.default.name
+  virtual_network_name = azurerm_virtual_network.default.name
+  address_prefixes     = ["10.0.2.0/24"]
+  service_endpoints    = ["Microsoft.Storage"]
+
+  delegation {
+    name = "fs"
+
+    service_delegation {
+      name = "Microsoft.DBforMySQL/flexibleServers"
+
+      actions = [
+        "Microsoft.Network/virtualNetworks/subnets/join/action",
+      ]
+    }
+  }
+}
+
+// Enables you to manage Private DNS zones within Azure DNS
+resource "azurerm_private_dns_zone" "default" {
+  name                = "${random_string.name.result}.mysql.database.azure.com"
+  resource_group_name = azurerm_resource_group.default.name
+}
+
+// Enables you to manage Private DNS zone Virtual Network Links
+resource "azurerm_private_dns_zone_virtual_network_link" "default" {
+  name                  = "mysqlfsVnetZone${random_string.name.result}.com"
+  private_dns_zone_name = azurerm_private_dns_zone.default.name
+  virtual_network_id    = azurerm_virtual_network.default.id
+  resource_group_name   = azurerm_resource_group.default.name
+}
+
+// Manages the MySQL Flexible Server
+resource "azurerm_mysql_flexible_server" "default" {
+  name                         = "mysqlfs-${random_string.name.result}"
+  resource_group_name          = azurerm_resource_group.default.name
+  location                     = azurerm_resource_group.default.location
+  administrator_login          = random_string.name.result
+  administrator_password       = random_password.password.result
+  zone                         = "1"
+  version                      = "8.0.21"
+  backup_retention_days        = 7
+  geo_redundant_backup_enabled = false
+
+  storage {
+    size_gb = 20
+    iops    = 360
+  }
+
+  delegated_subnet_id = azurerm_subnet.default.id
+  private_dns_zone_id = azurerm_private_dns_zone.default.id
+  sku_name            = "GP_Standard_D2ds_v4"
+
+  high_availability {
+    mode                      = "ZoneRedundant"
+    standby_availability_zone = "2"
+  }
+
+  maintenance_window {
+    day_of_week  = 0
+    start_hour   = 8
+    start_minute = 0
+  }
+
+  depends_on = [azurerm_private_dns_zone_virtual_network_link.default]
 }