使用UMI创建SQL Server（用户管理身份）时会遇到错误

Question

在执行此Terraform代码时，我会收到此错误消息：

    resource "azurerm_mssql_server" "sql_server" {
      name                = var.sql_server_name
      resource_group_name = var.rg_name
      location            = var.rg_location
      version             = var.server_version
      administrator_login = var.admin_login
      administrator_login_password = "Rock2424"
      outbound_network_restriction_enabled = true
      minimum_tls_version                  = "1.2"
    
      dynamic "identity" {
    
        for_each = var.enable_manage_identity == false ? toset([]) : toset([1])
    
        content {
          type         = "UserAssigned"
          identity_ids = [azurerm_user_assigned_identity.user_assigned_identity.id]
        }
      }
      primary_user_assigned_identity_id = azurerm_user_assigned_identity.user_assigned_identity[0].id
      azuread_administrator {
        login_username = var.ad_admin_server
        object_id      = var.ad_admin_server_object_id
      }
      tags = var.tags
    }
    
    resource "azurerm_user_assigned_identity" "user_assigned_identity" {
      count               = var.enable_manage_identity ? 1 : 0
      name                = "${var.sql_server_name}-identity"
      location            = var.rg_location
      resource_group_name = var.rg_name
    }

请参阅下面的错误消息：

错误：缺少必需的参数

使用azurerm_mssql_server.sql_server，
在main.tf行25上，在资源“ azurerm_mssql_server”中，“ sql_server”：
primary_user_assigned_identity_id = azurerm_user_assigned_identity.user_assigned_identity [0] .id

“ primary_user_assigned_identity_id”：必须指定所有Identity.0.Identity_ids，primary_user_assigned_identity_id必须指定