第一步：用帳號登入mysql

[[email protected] ~]# mysql -u root
 
第二步：改變使用者資料庫
mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
 
第三步：修改密碼，記得密碼要用password()函式進行加密，一定不要忘記！！！
mysql> update user set password=password('qwe123') where user='root';
Query OK, 1 row affected (0.04 sec)
Rows matched: 1  Changed: 1  Warnings: 0
 
第四步：重新整理許可權表
mysql> flush previleges;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘previleges’ at line 1
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
 
第五步：退出mysql
mysql> quit
Bye
 
第六步：對mysql進行重啟
[

[email protected] ~]# service mysqld restart;
STOPPING server from pid file /var/run/mysqld/mysqld.pid
100421 13:44:03  mysqld ended
Stopping MySQL:                                            [  OK  ]
Starting MySQL:                                            [  OK  ]
[1]+  Done                    mysqld_safe –skip-grant-tables

mysql資料庫遠端連線開啟方法  

登陸MYSQL mysql -u root -p 進入mysql庫
mysql> use mysql; 查詢user表下的幾個欄位的內容 mysql>select host,user,password from user; MySQL>select host, user from user;  mysql>update user set host = '%' where user = 'root'; MySQL>update user set host = '%' where user = 'root'; mysql>grant all privileges  on *.* to [email protected]'%' identified by "root"; FLUSH PRIVILEGES; /etc/mysql/my.cnf mysql  內127.0.0.1  改為 外網IP ======================================================= mysql>source /tmp/haobangshou_20140820000101.sql                   匯入sql

ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'mysql'  

方法一：
1.關閉mysql
   # service mysqld stop
2.遮蔽許可權
   # mysqld_safe --skip-grant-table
   螢幕出現： Starting demo from .....
3.新開起一個終端輸入
   # mysql -u root mysql
   mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
   mysql> FLUSH PRIVILEGES;//記得要這句話，否則如果關閉先前的終端，又會出現原來的錯誤
   mysql> \q

方法二：
1.關閉mysql
   # service mysqld stop
2.遮蔽許可權
   # mysqld_safe --skip-grant-table
   螢幕出現： Starting demo from .....
3.新開起一個終端輸入
   # mysql -u root mysql
   mysql> delete from user where USER='';
   mysql> FLUSH PRIVILEGES;//記得要這句話，否則如果關閉先前的終端，又會出現原來的錯誤
   mysql> \q
本文轉載自：http://cx7863.blog.163.com/blog/#m=0&t=3&c=mysql 不過本人mysql資料庫遠端連線開啟方法用的是： 允許任何主機使用“myuser”賬號和“mypwd”密碼連線到 MySQL 伺服器。
mysql> GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypwd' WITH GRANT OPTION; 
mysql> FLUSH PRIVILEGES;
允許使用者myuser從ip為192.168.1.3的主機連線到mysql伺服器，並使用mypwd作為密碼
mysql> GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypwd' WITH GRANT OPTION; 
mysql> FLUSH PRIVILEGES;