Question

我正在使用ASP.NET开发应用程序的后端，当我在Visual Studio中并使用来自Amazon的MySQL测试端点时，它工作正常。但是，当我在EC2实例上传代码并尝试测试相同的端点时，我收到了错误。

{
    "Message":"An error has occurred.",
    "ExceptionMessage": "Unable to connect to any of the specified MySQL hosts.",
    "ExceptionType":"MySql.Data.MySqlClient.MySqlException",
    "StackTrace":" 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()
}

MySQL是一个RDS，并且有一个安全组连接到EC2，允许端口3306

为什么会发生这种情况？

我无法从EC2连接到MySQL，而我可以从localhost连接到MySQL

0 个答案: