我在Azure VM上运行了一个Web应用程序。它是单代码库，多个db。基于web.config（基本上是localhost或生产）中的appsettings，它知道要使用哪个数据库。
就在最近，我做了一个简单的更新，并将代码推送到服务器。我使用git将文件从repo中拉到服务器，然后将我的dll从我的本地dev机器复制到服务器。它不是最好的，但它现在有效。
自上次更新以来，我一直在收到间歇性的数据库连接错误（与我推送的udpates无关）。基于我收到的错误，应用程序正在寻找错误的数据库（为localhost设置的内容），而不是使用生产数据库。由于db不存在，因此登录失败。我可以登录，有时客户不能，甚至在同一时间。然后我切换到一台新电脑，它不起作用。我已经重新启动了IIS，并且已经解决了一次，但我完全不知道发生了什么。
思想：
任何帮助，非常感谢！ Scott J。
编辑：似乎只发生在登录上。我将登录页面更改回原始页面。它工作，现在它有时再次停止工作。很沮丧！
错误讯息：
Cannot open database "companyA" requested by the login. The login failed. Login failed for user 'IIS APPPOOL\Production'.
System.Data.SqlClient.SqlException (0x80131904): Cannot open database "companyA" requested by the login. The login failed. Login failed for user 'IIS APPPOOL\Production'. at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions) 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, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnectionOptions userOptions) 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& connection) at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.Open() at PLM.Providers.SqlConnectionHolder.Open(HttpContext context, Boolean revertImpersonate) in C:\Users\Israel\Desktop\ODESK\Scott\PLMMemberhipProvider\SqlConnectionHelper.cs:line 127 at PLM.Providers.SqlConnectionHelper.GetConnection(String connectionString, Boolean revertImpersonation) in C:\Users\Israel\Desktop\ODESK\Scott\PLMMemberhipProvider\SqlConnectionHelper.cs:line 57 at PLM.Providers.SqlMembershipProvider.GetConnectionHolder() in C:\Users\Israel\Desktop\ODESK\Scott\PLMMemberhipProvider\SQLMembershipProvider.cs:line 101 at PLM.Providers.SqlMembershipProvider.GetPasswordWithFormat(String username, Boolean updateLastLoginActivityDate, Int32& status, String& password, Int32& passwordFormat, String& passwordSalt, Int32& failedPasswordAttemptCount, Int32& failedPasswordAnswerAttemptCount, Boolean& isApproved, DateTime& lastLoginDate, DateTime& lastActivityDate) in C:\Users\Israel\Desktop\ODESK\Scott\PLMMemberhipProvider\SQLMembershipProvider.cs:line 1704 at PLM.Providers.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved, String& salt, Int32& passwordFormat) in C:\Users\Israel\Desktop\ODESK\Scott\PLMMemberhipProvider\SQLMembershipProvider.cs:line 1562 at PLM.Providers.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved) in C:\Users\Israel\Desktop\ODESK\Scott\PLMMemberhipProvider\SQLMembershipProvider.cs:line 1549 at PLM.Providers.SqlMembershipProvider.ValidateUser(String username, String password) in C:\Users\Israel\Desktop\ODESK\Scott\PLMMemberhipProvider\SQLMembershipProvider.cs:line 856 at System.Web.UI.WebControls.Login.AuthenticateUsingMembershipProvider(AuthenticateEventArgs e) at System.Web.UI.WebControls.Login.OnAuthenticate(AuthenticateEventArgs e) at System.Web.UI.WebControls.Login.AttemptLogin() at System.Web.UI.WebControls.Login.OnBubbleEvent(Object source, EventArgs e) at System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) at System.Web.UI.WebControls.Button.OnCommand(CommandEventArgs e) at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) ClientConnectionId:5257f0df-46c9-4faa-bfea-1db4daf509b3
答案 0 :(得分：0)
您登录的是哪种数据库？我希望您的数据存储在SQL Azure或Azure存储中。
如果您的生产数据库是在辅助角色中创建的，请注意，只要您的工作人员的操作系统需要更新等，Microsoft将定期重新启动您的辅助角色，并且任何本地创建的文件（包括DB文件）将VM重新启动时删除。