无法在亚马逊EC2连接亚马逊RDS数据库？ [英] Can't connect Amazon rds database in Amazon ec2?

问题描述

我有了亚马逊RDS与实体框架连接的控制台应用程序。它在我的本地PC上运行良好。但是，当我运行我的应用程序在亚马逊EC2它无法连接到我的亚马逊RDS数据库，并说：基础提供失败开放。我的连接实体框架的字符串是...

I have a console application that has Amazon rds connection with Entity Framework . It is running well in my local PC. But When I am running my application in Amazon EC2 It can not connect to my Amazon RDS database and saying 'The underlying provider failed on open' . My connection string of entity framework is ...

<add name="MyEntities" connectionString="metadata=res://*/YhFinModel.csdl|res://*/YhFinModel.ssdl|res://*/YhFinModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=datasourcename,portnumber;initial catalog=databasename;persist security info=True;user id=userid;password=password;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

在此先感谢。

Thanks in advance.

推荐答案

你看着你的安全组？我想你将需要添加使用的是有端口访问您的RDS实例EC2安全组。

Have you looked at your security groups? I think you will need to add the EC2 security group you are using to have port access to your RDS instance.

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