### AS root user
mysql> SHOW GRANTS FOR 'nova'@'test1';
+---------------------------------------------------------------------------------------------------------+
| Grants for nova@test1 |
+---------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'nova'@'test1' IDENTIFIED BY PASSWORD '*6D539E9B................................' |
| GRANT ALL PRIVILEGES ON `nova`.* TO 'nova'@'test1' |
+---------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
mysql> SHOW GRANTS FOR 'nova'@'localhost';
+-------------------------------------------------------------------------------------------------------------+
| Grants for nova@localhost |
+-------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'nova'@'localhost' IDENTIFIED BY PASSWORD '*6D539E9B................................' |
| GRANT ALL PRIVILEGES ON `nova`.* TO 'nova'@'localhost' |
+-------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
mysql> SHOW GRANTS FOR 'nova'@'%';
+-----------------------------------------------------------------------------------------------------+
| Grants for nova@% |
+-----------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'nova'@'%' IDENTIFIED BY PASSWORD '*6D539E9B................................' |
| GRANT ALL PRIVILEGES ON `nova`.* TO 'nova'@'%' |
+-----------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
mysql> SHOW GRANTS FOR 'nova'@'10.21.0.0/255.255.0.0';
+-------------------------------------------------------------------------------------------------------------------------+
+-------------------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'nova'@'10.21.0.0/255.255.0.0' IDENTIFIED BY PASSWORD '**6D539E9B................................' |
| GRANT ALL PRIVILEGES ON `nova`.* TO 'nova'@'10.21.0.0/255.255.0.0' |
+-------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)