Showing All Grants With MySQL

 Users are identified with both a user and a host. If you want to show all of the grants for all users, you need to first look at the mysql.user table: 

[usr-1@srv-1 ~]$ mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 10863 to server version: 4.1.10a Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> select User,Host from mysql.user; +------+---------------------------+ | User | Host | +------+---------------------------+ | are | 10.10.10.10 | | are | 10.10.10.11 | | are | 10.50.100.0/255.255.255.0 | | are | 10.50.100.112 | | are | 10.50.100.2 | | | localhost | | are | localhost | | root | localhost | | | srv-1.example.com | | root | srv-1.example.com | +------+---------------------------+ 10 rows in set (0.00 sec)

Some of these permissions overlap. That is, the 10.50.100.0 entry include the other individual hosts. We can now show the grants for individual users: 

mysql> show grants for are@'10.50.100.0/255.255.255.0'; +-----------------------------------------------------------------+ | Grants for [email protected]/255.255.255.0 | +-----------------------------------------------------------------+ | GRANT USAGE ON *.* TO 'are'@'10.50.100.0/255.255.255.0' IDENTIFIED BY PASSWORD '4bc9fc1d367a0b23' | | GRANT ALL PRIVILEGES ON `arewedown`.* TO 'are'@'10.50.100.0/255.255.255.0' | | GRANT ALL PRIVILEGES ON `mysql`.`arewedown` TO 'are'@'10.50.100.0/255.255.255.0'| +-----------------------------------------------------------------+ 3 rows in set (0.00 sec) mysql> show grants for [email protected]; +--------------------------------------------------------------+ | Grants for [email protected] | +--------------------------------------------------------------+ | GRANT USAGE ON *.* TO 'are'@'10.10.10.10' | | GRANT ALL PRIVILEGES ON `arewedown`.* TO 'are'@'10.10.10.10' | +--------------------------------------------------------------+ 2 rows in set (0.00 sec) mysql>

For more information on the GRANT command for MySQL and associated commands, see this page.

本文转自 http://www.netadmintools.com/art431.html