部署错误-SQLSTATE[HY000][2002]连接被拒绝

我正在开发一个symfony应用程序，最近由于登录、注册等问题，我试图将我的工作部署到服务器上。

当地一切顺利！请注意，尽管我使用的是本地主机上的RDS数据库。我没有使用dev数据库。

最初它在服务器上抱怨我的PHP版本，所以我将其更新到5.6并重新聚合，现在我在日志中得到了以下内容！

Creating the "app/config/parameters.yml" file
> Sensio'Bundle'DistributionBundle'Composer'ScriptHandler::buildBootstrap
> Sensio'Bundle'DistributionBundle'Composer'ScriptHandler::clearCache

[Doctrine'DBAL'Exception'ConnectionException]                              
An exception occured in driver: SQLSTATE[HY000] [2002] Connection refused  

[Doctrine'DBAL'Driver'PDOException]        
SQLSTATE[HY000] [2002] Connection refused  

[PDOException]                             
SQLSTATE[HY000] [2002] Connection refused  

Script Sensio'Bundle'DistributionBundle'Composer'ScriptHandler::clearCache handling the post-install-cmd event terminated with an exception

[RuntimeException]                                                             
An error occurred when executing the "'cache:clear --no-warmup'" command:      
  [Doctrine'DBAL'Exception'ConnectionException]                                
  An exception occured in driver: SQLSTATE[HY000] [2002] Connection refused    

  [Doctrine'DBAL'Driver'PDOException]                                          
  SQLSTATE[HY000] [2002] Connection refused                                    

  [PDOException]                                                               
  SQLSTATE[HY000] [2002] Connection refused                                    
.                                                                              

install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-plugins] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--ignore-platform-reqs] [--] [<packages>]...
(Executor::NonZeroExitStatus)

[2016-01-12T16:22:49.583Z] ERROR [2219]  : Command CMD-AppDeploy failed!

任何更多的信息只需要询问一个错误的更新！任何帮助都将不胜感激！