操作系统：CentOS6.0
数据库系统：Mysql
任务：创建字符集数据库和对用户授权的问题
一、建立字符集数据库，避免乱码。
1）建立一个名为sky9896_gbk 的字符集数据库
mysql>CREATE DATABASE sky9896_gbk DEFAULT CHARACTER SET gbk;
2）建立一个名为sky9896_UTF 的字符集数据库
mysql> CREATE DATABASE sky9896_utf8 DEFAULT CHARACTER SET utf8;
3）显示建sky9896数据库信息
mysql> show create database sky9896\G; *************************** 1. row ***************************
Database: sky9896
Create Database: CREATE DATABASE `sky9896` /*!40100 DEFAULT CHARACTER SET gbk */
1 row in set (0.00 sec)
ERROR:
No query specified
4)mysql> drop user ‘‘@‘localhost.localdomain‘; #删除多余的用户账号
Query OK, 0 rows affected (0.00 sec)
5)mysql> grant all privileges on sky9896_gbk to [email protected]; #如何授权
6）mysql> show grants for [email protected]\G #显示授权的信息
*************************** 1. row ***************************
Grants for [email protected]: GRANT USAGE ON *.* TO ‘sky9896‘@‘localhost‘ IDENTIFIED BY PASSWORD ‘*23AE809DDACAF96AF0FD78ED04B6A265E05AA257‘
*************************** 2. row ***************************
Grants for [email protected]: GRANT ALL PRIVILEGES ON `sky9896_gbk`.`sky9896_gbk` TO ‘sky9896‘@‘localhost‘
2 rows in set (0.00 sec)
7)mysql> revoke insert on sky9896_gbk from ‘sky9896‘@‘localhost‘; #收回insert权限
Query OK, 0 rows affected (0.00 sec)
二、生产环境授权：
1）生产环境授权用户的建议：
mysql> create database blog DEFAULT CHARACTER SET gbk COLLATE gbk_chinese_ci; #创建blog gbk字符集数据库
Query OK, 1 row affected (0.00 sec)
mysql> grant select,insert,update,delete,create on blog.* to ‘sky9896‘@‘localhost‘ identified by ‘123‘;
Query OK, 0 rows affected (0.00 sec)
2）生产环境主库用户的授权：
mysql> grant select,insert,update,DELETE on *.* TO ‘blog‘@‘localhost‘ IDENTIFIED BY ‘1231‘;
3)生产环境从库用户的授权
mysql> grant select on *.* TO ‘blog‘@‘localhost‘ identified by ‘123‘;