mysql Access denied for user ‘root’@’localhost’ (using password: YES)解决方法

今天在启动mysql时出现以下问题：



[root@www ~]# mysql -u root -p

Enter password: 

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

网上的答案是各种各样的，最终解决问题的方法总结为以下，好多都是没有设置初始密码造成此问题的。

解决方法如下：

[root@www ~]# service mysqld stop   #先关闭mysql服务

Stopping mysqld:                      [ OK ]

[root@www ~]# mysql

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

[root@www ~]# mysql -u root -p      #关闭服务后又出现如下问题

Enter password: 

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

[root@www ~]# mysql -u root mysql    #键入此命令进入mysql

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 1

Server version: 5.1.73 Source distribution

Copyright (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> update user set password=password('123') where user='root' and host='localhost';  ---->修改root的密码

Query OK, 1 row affected (0.04 sec)

Rows matched: 1 Changed: 1 Warnings: 0

mysql> flush priviledge;

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 'priviledge' at line 1

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql> \q

Bye

[root@www ~]# mysql -u root -p           ------>重新进入

Enter password: 

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.1.73 Source distribution

Copyright (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> \q

Bye\

使用root用户登陆Linux，更改容许登陆的IP地址范围

mysql>grant all privileges on *.* to 'root'@'%' identified by 'rootpasswd' with grant option; 

刷新权限
flush privilges;