1、停止mysql服務 service mysqld stop

[[email protected] ~]# service mysqld stop
Stopping mysqld:                                           [  OK  ]

2、 [[email protected] ~]# mysqld_safe --skip-grant-tables
170403 08:02:17 mysqld_safe Logging to '/var/log/mysqld.log'.
170403 08:02:17 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

3、  新開視窗  進入mysql

4、  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
mysql> update user set password=password("12345") where user="root";
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3  Changed: 3  Warnings: 0


mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)


mysql> exit
Bye
 
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -ADatabase changed
mysql> update user set password=password("12345") where user="root";
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3  Changed: 3  Warnings: 0mysql> flush privileges;
 
Query OK, 0 rows affected (0.00 sec)mysql> exit
Bye

flush privileges;重新整理許可權

5終止第一個視窗的後臺程序

ctrl + z

6測試密碼進入

mysql -uroot -p12345
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.1.73 Source distributionCopyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql>