间歇性IIS/Azure错误

Question

我有一个在Azure虚拟机上运行的Web应用程序。它是单一代码库，多个数据库。根据web.config（基本上是本地主机或生产）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将文件从回购站点拖到服务器，然后将我的dll从本地开发机器复制到服务器。这不是最好的，但它现在起作用了。

自从上次更新以来，我一直在收到间歇性的数据库连接错误（与我推送的udpates没有关系）。根据我收到的错误，该应用程序正在查找错误的数据库（为localhost设置的内容），而不是使用生产数据库。由于数据库不存在，它在登录时失败。我可以登录，有时甚至在同一时间，客户也无法登录。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，但是我对于发生的事情完全不知所措。

思考：

• 可能的dll或建立被破坏？
• IIS有问题吗？
• 其他想法？

任何帮助，非常感谢！ Scott J.

编辑：它似乎只发生在登录。我将登录页面改回原来的页面。它的工作，现在它有时再次停止工作。非常令人沮丧！

错误消息：

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 

Answer 1

你登录到什么样的数据库？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worker角色中创建的，请注意您的worker角色将由Microsoft定期重新启动，无论何时需要更新您的工作人员的操作系统等等以及任何本地创建的文件（包括数据库文件）将在VM重新启动时被删除。