在 Amazon EC2 上使用集成安全性连接到 SQL Express 失败

Question

我在 Amazon EC2 上运行 Windows Server 2019 的 t2-micro 实例。我已经安装了 SQL Server 和 IIS 用于 Web 开发。 我已经使用 zip 包部署了 asmx Web 服务。我已经使用 SSMS 手动创建了数据库。 使用以下连接字符串会导致错误

 static string Source = @"Data Source=localhost\SQLEXPRESS;Initial Catalog=coredatabase;Integrated Security=SSPI;";

SSMS 可以正常使用此连接

我收到以下错误

System.Data.SqlClient.SqlException: Cannot open database "coredatabase" requested by the login. The login failed.
Login failed for user 'IIS APPPOOL\DefaultAppPool'.
   at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling, SqlAuthenticationProviderManager sqlAuthProviderManager)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
   at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
   at System.Data.SqlClient.SqlConnection.Open()
   at SIT_Service.CoreService.checkifuserexistsinternal(String email, String mainauthtoken) in C:\Users\User\Desktop\Web Service\Web Service (1)\Web Service\WebApplication2\CoreService.asmx.cs:line 429
   at SIT_Service.CoreService.register(String email, String password, String mainauthtoken) in C:\Users\User\Desktop\Web Service\Web Service (1)\Web Service\WebApplication2\CoreService.asmx.cs:line 498

Answer 1

错误提示：“用户 IIS APPPOOL\DefaultAppPool 登录失败”，表示用户 IIS APPPOOL\DefaultAppPool 登录失败。

可能是因为该 Windows 用户没有 SQL Server 登录名。在 SSMS 中，在查询窗口中连接到您的数据库并运行

use coredatabase
create login [IIS APPPOOL\DefaultAppPool] from windows;
create user [IIS APPPOOL\DefaultAppPool] for login [IIS APPPOOL\DefaultAppPool];
grant select, insert, update, delete to [IIS APPPOOL\DefaultAppPool];  --or whatever