2019独角兽企业重金招聘Python工程师标准>>> 
1.结束mysql 服务
service mysqld stop
#或 /etc/init.id/mysqld stop2. 使用 “--skip-grant-tables”参数重新启动mysql
[root@NetDakVPS ~]# mysqld_safe --skip-grant-tables &
[1] 23810
Starting mysqld daemon with databases from /var/lib/mysql 3.用root帐号登录mysql
[root@NetDakVPS ~]# mysql -u root
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 1
Server version: 5.0.77 Source distributionType 'help;' or 'h' for help. Type 'c' to clear the buffer.4：改变用户数据库
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 -ADatabase changed 5：修改密码，记得密码要用password()函数进行加密
mysql> update user set password=password('netdak') where user='root';
Query OK, 1 row affected (0.04 sec)
Rows matched: 1 Changed: 1 Warnings: 0 六：刷新权限表
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec) 七：退出mysql
mysql> quit八：对mysql进行重启
[root@NetDakVPS ~]# service mysqld restart;
STOPPING server from pid file /var/run/mysqld/mysqld.pid
100421 13:44:03 mysqld endedStopping MySQL: [ OK ]
Starting MySQL: [ OK ]
[1]+ Done mysqld_safe --skip-grant-tables 九：用更改过的密码重新登录即可。
[root@NetDakVPS ~]# mysql -u root -p
Enter password: netdak
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 2
Server version: 5.0.77 Source distributionType 'help;' or 'h' for help. Type 'c' to clear the buffer.mysql> quit
Bye