在Unix上安装MySQL后,需要初始化授权表、启动服务器,并确保服务器工作正常。并为授权表中的账户指定密码。
在Unix中,由mysql_install_db设置授权表。
如果系统为安装好的CentOS5,则只需要运行
# mysql_install_db --user=mysql --datadir=/var/lib/mysql_ndbd/
一定要确保由mysql登录账户拥有数据库目录和文件,以便在以后运行服务器具有读、写访问权限。
当然,也可以以
mysqld_safe --user=mysql --skip-grant-tables &跳过授权表来登录,登录进去重新赋权限,同时更新权限表:flush privileges
hi 楼主,在数据库中创建包含很多,视图,索引,临时表的创建权限都能分开赋予,你可以执行 show privileges 来查看权限参数,我这边就以创建表为例,只包含查询表功能,其他修改,删除,备份没有权限;以下是步骤:1,create user 'tom'@'%' identified by '123456'---创建用户,无权限;
2, grant create,select on wangxh2.* to tom-----把wangxh2库的所有表的创建和查询赋予tom
3,flush privileges-----刷新权限表才能起效
接下来是测试:
mysql>show databases
+--------------------+
| Database |
+--------------------+
| information_schema |
| test |
| wangxh2|
+--------------------+
3 rows in set (0.06 sec)
mysql>use wangxh2
Database changed
mysql>show tables
+-------------------+
| Tables_in_wangxh2 |
+-------------------+
| test |
+-------------------+
1 row in set (0.00 sec)
mysql>drop test
ERROR 1064 (42000): You have an error in your SQL syntaxcheck the manual that corresponds to your MySQL server version for the right syntax to use near 'test' at line 1
mysql>drop table test
ERROR 1142 (42000): DROP command denied to user 'tom'@'localhost' for table 'test'
mysql>select count(*) from test
+----------+
| count(*) |
+----------+
| 33554432 |
+----------+
1 row in set (0.01 sec)
mysql>insert into test values(1)
ERROR 1142 (42000): INSERT command denied to user 'tom'@'localhost' for table 'test'
mysql>delete from test
ERROR 1142 (42000): DELETE command denied to user 'tom'@'localhost' for table 'test'
mysql>update test set id=1
ERROR 1142 (42000): UPDATE command denied to user 'tom'@'localhost' for table 'test'
mysql>create table test1 (id int)
Query OK, 0 rows affected (0.02 sec)
mysql>insert into test1 values(1)
ERROR 1142 (42000): INSERT command denied to user 'tom'@'localhost' for table 'test1'
[mysql@localhost ~]$ mysqldump -u tom -paidengshan wangxh2 >/home/mysql/aa.sql
mysqldump: Got error: 1044: Access denied for user 'tom'@'%' to database 'wangxh2' when using LOCK TABLES
[mysql@localhost ~]$
-----------------------------------------------------------------------------------------
以上测试发现,tom对wangxh2有建表,查询表的权限,但是修改,删除,新增,备份都没有权限,达到你的需求了
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