MySQL之账号管理
一 账号管理1 创建账号：
示例 1：
建立账号zwj，权限为在所有数据库上具有所有权限
mysql> grant all on *.* to 'zwj'@'192.168.154.180';
Query OK, 0 rows affected (0.01 sec)
为zwj设置密码
mysql> grant all on *.* to 'zwj'@'192.168.154.180'> Query OK, 0 rows affected (0.00 sec)
示例 2：
建立用户user01，权限为test库里所有表进行select、update、insert、delete操作，密码为"a123"。
mysql> grant select,update,insert,delete on test.* to 'user01'@'192.168.154.%'> Query OK, 0 rows affected (0.09 sec)
2 查看权限
查看指定账户的权限
mysql> show grants for 'user01'@'192.168.154.%';
+-------------------------------------------------------------------------------------------------------------------+
| Grants for user01@192.168.154.% |
+-------------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'user01'@'192.168.154.%'> | GRANT SELECT, INSERT, UPDATE, DELETE ON `test`.* TO 'user01'@'192.168.154.%' |
+-------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
查看当前用户权限
mysql> show grants;
+----------------------------------------------------------------------------------------------------------------------------------------+
| Grants for root@localhost |
+----------------------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost'> | GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION |
+----------------------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
3 更改权限
新建用户
mysql> grant select on test.* to 'bbs'@'192.168.154.%'> Query OK, 0 rows affected (0.00 sec)
mysql> show grants for 'bbs'@'192.168.154.%';
+----------------------------------------------------------------------------------------------------------------+
| Grants for bbs@192.168.154.% |
+----------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'bbs'@'192.168.154.%'> | GRANT SELECT ON `test`.* TO 'bbs'@'192.168.154.%' |
+----------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
增加权限
mysql> grant select,insert,delete on test.* to 'bbs'@'192.168.154.%';
Query OK, 0 rows affected (0.00 sec)
mysql> show grants for 'bbs'@'192.168.154.%';
+----------------------------------------------------------------------------------------------------------------+
| Grants for bbs@192.168.154.% |
+----------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'bbs'@'192.168.154.%'> | GRANT SELECT, INSERT, DELETE ON `test`.* TO 'bbs'@'192.168.154.%' |
+----------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
撤销权限
mysql> revoke delete,insert on test.* from 'bbs'@'192.168.154.%';
Query OK, 0 rows affected (0.01 sec)
mysql> show grants for 'bbs'@'192.168.154.%';
+----------------------------------------------------------------------------------------------------------------+
| Grants for bbs@192.168.154.% |
+----------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'bbs'@'192.168.154.%'> | GRANT SELECT ON `test`.* TO 'bbs'@'192.168.154.%' |
+----------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
4 修改账号密码
方式 1：
mysql> set password for 'bbs'@'192.168.154.%' = password('abc-123');
Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
方式 2：
mysql> update mysql.user set password=password('aaa') where user='bbs' and host='192.168.154.%';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1Changed: 1Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
方式 3：
# mysqladmin -u bbs -h 192.168.154.180 password "ccc" -p
Enter password:
Warning: Using a password on the command line interface can be insecure.
为root初次设置密码：
# mysqladmin -uroot password "abc-123"
为root修改密码：
# mysqladmin -uroot password 'root' -p
Enter password:
Warning: Using a password on the command line interface can be insecure.
5 删除账户
mysql> drop user 'bbs'@'192.168.154.%';
Query OK, 0 rows affected (0.00 sec)
mysql> show grants for 'bbs'@'192.168.154.%';
ERROR 1141 (42000): There is no such grant defined for user 'bbs' on host '192.168.154.%'
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