Sort all variables, outputs, arguments and blocks in resource block.

Adjust code file's style.
Add `numeric = false` for `random_string.name` in `201-mysql-fs-db` module as the name is used as `azurerm_mysql_flexible_server.default`'s `administrator_login` and the login name doesn't support a name start with number.
Add minimum constraints for `random_password.password` in `201-mysql-fs-db` module as the password required a minimum complexity.

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

@@ -4,50 +4,54 @@ resource "random_pet" "rg_name" {
 }
 
 resource "azurerm_resource_group" "rg" {
-  name     = random_pet.rg_name.id
   location = var.resource_group_location
+  name     = random_pet.rg_name.id
 }
 
 # Generate random value for the name
 resource "random_string" "name" {
   length  = 8
-  upper   = false
   lower   = true
+  numeric = false
   special = false
+  upper   = false
 }
 
 # Generate random value for the login password
 resource "random_password" "password" {
   length           = 8
-  upper            = true
   lower            = true
-  special          = true
-  numeric          = false
+  min_lower        = 1
+  min_numeric      = 1
+  min_special      = 1
+  min_upper        = 1
+  numeric          = true
   override_special = "_"
+  special          = true
+  upper            = true
 }
 
 # Manages the Virtual Network
 resource "azurerm_virtual_network" "default" {
-  name                = "vnet-${random_string.name.result}"
-  location            = azurerm_resource_group.rg.location
-  resource_group_name = azurerm_resource_group.rg.name
   address_space       = ["10.0.0.0/16"]
+  location            = azurerm_resource_group.rg.location
+  name                = "vnet-${random_string.name.result}"
+  resource_group_name = azurerm_resource_group.rg.name
 }
 
 # Manages the Subnet
 resource "azurerm_subnet" "default" {
+  address_prefixes     = ["10.0.2.0/24"]
   name                 = "subnet-${random_string.name.result}"
   resource_group_name  = azurerm_resource_group.rg.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"
-
+      name    = "Microsoft.DBforMySQL/flexibleServers"
       actions = [
         "Microsoft.Network/virtualNetworks/subnets/join/action",
       ]
@@ -65,41 +69,38 @@ resource "azurerm_private_dns_zone" "default" {
 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.rg.name
+  virtual_network_id    = azurerm_virtual_network.default.id
 }
 
 # Manages the MySQL Flexible Server
 resource "azurerm_mysql_flexible_server" "default" {
+  location                     = azurerm_resource_group.rg.location
   name                         = "mysqlfs-${random_string.name.result}"
   resource_group_name          = azurerm_resource_group.rg.name
-  location                     = azurerm_resource_group.rg.location
   administrator_login          = random_string.name.result
   administrator_password       = random_password.password.result
-  zone                         = "1"
-  version                      = "8.0.21"
   backup_retention_days        = 7
+  delegated_subnet_id          = azurerm_subnet.default.id
   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"
+  private_dns_zone_id          = azurerm_private_dns_zone.default.id
+  sku_name                     = "GP_Standard_D2ds_v4"
+  version                      = "8.0.21"
+  zone                         = "1"
 
   high_availability {
     mode                      = "ZoneRedundant"
     standby_availability_zone = "2"
   }
-
   maintenance_window {
     day_of_week  = 0
     start_hour   = 8
     start_minute = 0
   }
+  storage {
+    iops    = 360
+    size_gb = 20
+  }
 
   depends_on = [azurerm_private_dns_zone_virtual_network_link.default]
 }

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

@@ -1,8 +1,8 @@
 # Manages the MySQL Flexible Server Database
 resource "azurerm_mysql_flexible_database" "default" {
+  charset             = "utf8"
+  collation           = "utf8_unicode_ci"
   name                = "mysqlfsdb_${random_string.name.result}"
   resource_group_name = azurerm_resource_group.rg.name
   server_name         = azurerm_mysql_flexible_server.default.name
-  charset             = "utf8"
-  collation           = "utf8_unicode_ci"
 }

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

@@ -1,7 +1,3 @@
-output "resource_group_name" {
-  value = azurerm_resource_group.rg.name
-}
-
 output "azurerm_mysql_flexible_server" {
   value = azurerm_mysql_flexible_server.default.name
 }
@@ -9,3 +5,7 @@ output "azurerm_mysql_flexible_server" {
 output "mysql_flexible_server_database_name" {
   value = azurerm_mysql_flexible_database.default.name
 }
+
+output "resource_group_name" {
+  value = azurerm_resource_group.rg.name
+}

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

@@ -16,4 +16,4 @@ terraform {
 
 provider "azurerm" {
   features {}
-}
+}

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

@@ -1,9 +1,9 @@
-variable "resource_group_name_prefix" {
-  default     = "rg"
-  description = "Prefix of the resource group name that's combined with a random ID so name is unique in your Azure subscription."
-}
-
 variable "resource_group_location" {
   default     = "eastus"
   description = "Location of the resource group."
 }
+
+variable "resource_group_name_prefix" {
+  default     = "rg"
+  description = "Prefix of the resource group name that's combined with a random ID so name is unique in your Azure subscription."
+}