AWS彈性豆莢。導軌無法連接到MYSQL

我無法解決這個問題，MySQL不會連接。使用eb部署。而且我使用Ruby 2.3.1 vAWS彈性豆莢。導軌無法連接到MYSQL

+ su -s /bin/bash -c 'leader_only bundle exec rake db:migrate' webapp 
    rake aborted! Mysql2::Error: Can't connect to MySQL server on 'labr.cyp2t1256323.us-west-2.rds.amazonaws.com' (4) 
    /opt/rubies/ruby-2.3.1/bin/bundle:23:in `load' 
    /opt/rubies/ruby-2.3.1/bin/bundle:23:in `<main>' 
    Tasks: TOP => db:migrate 
    (See full trace by running task with --trace) (ElasticBeanstalk::ExternalInvocationError) 
caused by: ++ /opt/elasticbeanstalk/bin/get-config container -k script_dir

的database.yml

production: 
    adapter: mysql2 
    encoding: utf8 
    reconnect: false 
    pool: 20 
    database: *** 
    username: ***** 
    password: ***** 
    host: labr.cyp2t1256323.us-west-2.rds.amazonaws.com 
    port: 3306

3306 Amazon EC2的控制檯上啓用，軌-ENV是健康的紅色

來源

2017-06-22 Railroad Tycoon