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我們有一個與多個第三方系統集成的Windows Azure應用程序（Lokad.CQRS體系結構）。其中一個集成發生在mySQL上。一切都很順利，但最近我們有一個Windows Azure應用程序無法連接的mySQL數據庫，導致超時。在Windows Azure上mySQL連接超時
以下是有關堆棧跟蹤：
System.TimeoutException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond --->
System.IO.IOException: Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. --->
System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at MyNetworkStream.Read(Byte[] buffer, Int32 offset, Int32 count)
--- End of inner exception stack trace ---
at MyNetworkStream.HandleOrRethrowException(Exception e)
at MyNetworkStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at MySql.Data.MySqlClient.TimedStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.BufferedStream.Read(Byte[] array, Int32 offset, Int32 count)
at MySql.Data.MySqlClient.MySqlStream.ReadFully(Stream stream, Byte[] buffer, Int32 offset, Int32 count)
at MySql.Data.MySqlClient.MySqlStream.LoadPacket()
at MySql.Data.MySqlClient.MySqlStream.ReadPacket()
at MySql.Data.MySqlClient.NativeDriver.Open()
at MySql.Data.MySqlClient.Driver.Open()
at MySql.Data.MySqlClient.Driver.Create(MySqlConnectionStringBuilder settings)
at MySql.Data.MySqlClient.MySqlConnection.Open()
重要的亮點：
- 目標數據庫是從Windows Azure的訪問（使用端口轉發來驗證，而通過MySQL工作臺連接）;
- 與目標數據庫的集成可以從Local Azure Dev Fabric正常工作;
- Windows Azure上的問題發生在展臺池化和非池化連接上。
- TCP/IP，普通端口，無SSL;
- 此操作連接超時夠大 - 5秒鐘，它不斷地失敗（但始終從位於不遠處的NE DC非天青機成功）
我們的Oracle，MS SQL，MySQL的以及在各種設置和配置（Linux/Windows託管的數據庫服務器）上從Lokad.CQRS通過Windows Azure工作的PostgreSQL連接。但是這個特定的mySQL案例讓我感到困惑。
任何可能導致問題的猜測？
你說你所使用的端口轉發，以確保天青可以談。你有沒有試圖直接從角色連接？也許使用RDP並驗證？ – 2011-02-01 19:03:51