Root account wont work in MySQL
mysql> GRANT ALL ON *.* TO 'root'@'%'
    ->   IDENTIFIED BY '[password]'
    ->   WITH GRANT OPTION;
ERROR 1045 (28000): Access denied for user 'root'@'%' (using password: YES)
mysql>

mysql> show grants for root
    -> ;
+-----------------------------------------------------------------------------------------------------+
| Grants for root@%                                                                                   |
+-----------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'root'@'%' IDENTIFIED BY PASSWORD '*738393F115A47ACE272D98F4719B8491A2B8296F' |
| GRANT ALL PRIVILEGES ON `sometable`.* TO 'root'@'%' WITH GRANT OPTION                               |
| GRANT ALL PRIVILEGES ON `Test`.* TO 'root'@'%' WITH GRANT OPTION                                    |
+-----------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)

mysql> select user();

mysql> select * from mysql.userG

mysql> select * from mysql.userG
*************************** 1. row ***************************
                 Host: localhost
                 User: root
             Password: xxxxxxxxxxxxxxx
          Select_priv: Y
          Insert_priv: Y
          Update_priv: Y
          Delete_priv: Y
          Create_priv: Y
            Drop_priv: Y
          Reload_priv: Y
        Shutdown_priv: Y
         Process_priv: Y
            File_priv: Y
           Grant_priv: Y
      References_priv: Y
           Index_priv: Y
           Alter_priv: Y
         Show_db_priv: Y
           Super_priv: Y
Create_tmp_table_priv: Y
     Lock_tables_priv: Y
         Execute_priv: Y
      Repl_slave_priv: Y
     Repl_client_priv: Y
     Create_view_priv: Y
       Show_view_priv: Y
  Create_routine_priv: Y
   Alter_routine_priv: Y
     Create_user_priv: Y
           Event_priv: Y
         Trigger_priv: Y
             ssl_type:
           ssl_cipher:
          x509_issuer:
         x509_subject:
        max_questions: 0
          max_updates: 0
      max_connections: 0
 max_user_connections: 0