MySQL - Access denied for user 'root'@'localhost' (using password: YES)

Hola Recién intento acceder a un servicio que tenemos en un VPS y me aparece este error:

Access denied for user 'root'@'localhost' (using password: YES)

Rails.root: c:/sites/site
Application Trace | Framework Trace | Full Trace

mysql2-0.3.21-x64 (mingw32) lib/mysql2/client.rb:70:in `connect'
mysql2-0.3.21-x64 (mingw32) lib/mysql2/client.rb:70:in `initialize'
activerecord (4.2.3) lib/active_record/connection_adapters/mysql2_adapter.rb:18:in `new'
activerecord (4.2.3) lib/active_record/connection_adapters/mysql2_adapter.rb:18:in `mysql2_connection'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:438:in `new_connection'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:448:in `checkout_new_connection'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:422:in `acquire_connection'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:349:in `block in checkout'
C:/ruby23-x64/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:348:in `checkout'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:263:in `block in connection'
C:/ruby23-x64/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:262:in `connection'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:571:in `retrieve_connection'
activerecord (4.2.3) lib/active_record/connection_handling.rb:113:in `retrieve_connection'
activerecord (4.2.3) lib/active_record/connection_handling.rb:87:in `connection'
activerecord (4.2.3) lib/active_record/migration.rb:383:in `connection'
activerecord (4.2.3) lib/active_record/migration.rb:370:in `call'
actionpack (4.2.3) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.3) lib/active_support/callbacks.rb:84:in `run_callbacks'
actionpack (4.2.3) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.3) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.3) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
actionpack (4.2.3) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
web-console (2.2.1) lib/web_console/middleware.rb:31:in `call'
actionpack (4.2.3) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.3) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.3) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.3) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.3) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.3) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.3) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.3) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.4) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.4) lib/rack/runtime.rb:18:in `call'
activesupport (4.2.3) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
rack (1.6.4) lib/rack/lock.rb:17:in `call'
actionpack (4.2.3) lib/action_dispatch/middleware/static.rb:116:in `call'
rack (1.6.4) lib/rack/sendfile.rb:113:in `call'
railties (4.2.3) lib/rails/engine.rb:518:in `call'
railties (4.2.3) lib/rails/application.rb:165:in `call'
rack (1.6.4) lib/rack/content_length.rb:15:in `call'
puma (3.4.0) lib/puma/configuration.rb:224:in `call'
puma (3.4.0) lib/puma/server.rb:569:in `handle_request'
puma (3.4.0) lib/puma/server.rb:406:in `process_client'
puma (3.4.0) lib/puma/server.rb:271:in `block in run'
puma (3.4.0) lib/puma/thread_pool.rb:114:in `block in spawn_thread'



¿Alguien pueda ayudarme y sugerir una solución? agradezco la más detallada ayuda, ya que soy entusiasta en este medio.