c# - 系统启动时通过 .net 连接器连接 mysql 时出错

Question

出现以下错误

MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts. ---> System.Net.Sockets.SocketException (0x80004005): 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 111.22.3.44:3306
   at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
   at MySql.Data.Common.MyNetworkStream.CreateSocketStream(MySqlConnectionStringBuilder settings, IPAddress ip, Boolean unix)
   at MySql.Data.Common.MyNetworkStream.CreateStream(MySqlConnectionStringBuilder settings, Boolean unix)
   at MySql.Data.Common.StreamCreator.GetTcpStream(MySqlConnectionStringBuilder settings)
   at MySql.Data.MySqlClient.NativeDriver.Open()
   at MySql.Data.MySqlClient.NativeDriver.Open()
   at MySql.Data.MySqlClient.Driver.Open()
   at MySql.Data.MySqlClient.Driver.Create(MySqlConnectionStringBuilder settings)
   at MySql.Data.MySqlClient.MySqlPool.CreateNewPooledConnection()
   at MySql.Data.MySqlClient.MySqlPool.GetPooledConnection()
   at MySql.Data.MySqlClient.MySqlPool.TryToGetDriver()
   at MySql.Data.MySqlClient.MySqlPool.GetConnection()
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at CC.DataAccess.ConnectionManager.GetConnection()

我的数据库服务器在 Centos 上，版本为 5.6.25我正在使用 .net 4.5 和 mysqlconnecot 6.9.7。有没有其他人遇到过这个问题

Answer 1

你的代码兄弟在哪里？你能在这里粘贴你的示例代码吗？

你可能会得到一些提示:

Unable to connect to MySQL database from ASP.NET

Unable to connect to any of the specified mysql hosts. C# MySQL