title: Error when run heroku run php artisan migrate
body: <p>I've deployed my laravel app to heroku, but when I try run <code>php artisan migrate</code> in heroku bash I get the following errors:</p>
  
  <p>SQLSTATE[HY000] [2002] Connection refused (SQL: select * from information_schema.tables where table_schema = 4GrEPZThTu and table_name = migrations and table_type='BASE TABLE')</p>
  
  <p>SQLSTATE[HY000] [2002] Connection refused </p>
  
  <p>I'm using remotemysql.com to host my database. I check all the DB configurations and it's all set correct. can anyone help me to fix this problem ?</p>