一、mysql登录错误
mysqladmin: connect to server at 'localhost' failed error: 'Access denied for user 'root'@'localhost' (using password: YES)'
修改密码
service mysqld stop
mysqld_safe --skip-grant-tables &
输入 mysql -uroot -p 回车进入
>use mysql;
> update user set password=PASSWORD("newpass")where user="root";
更改密码为 newpassord
> flush privileges; 更新权限
> quit 退出
#service mysqld restart
mysql -uroot -p新密码进入
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二，忘记本地root的登录密码
解决过程：
1、编辑/etc/my.cnf
在[mysqld] 配置部分添加一行
skip-grant-tables
2、保存后重启mysql
[root@localhost etc]# service mysqld restart
Shutting down MySQL. [ OK ]
Starting MySQL. [ OK ]
3、登录数据库重新设置root密码
[root@localhost ~]# mysql -uroot -p mysqlEnter password: #直接回车进入 Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 1 Server version: 5.1.47-log Source distributionCopyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. This software comes with ABSOLUTELY NO WARRANTY. This is free software,and you are welcome to modify and redistribute it under the GPL v2 licenseType 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases;+--------------------+| Database | +--------------------+| information_schema || mysql | | test | +--------------------+3 rows in set (0.00 sec)
执行下列语句
mysql> update user set password=password("mysql") where user='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)4、删除/etc/my.cnf文件中添加的“skip-grant-tables”行，重启mysql；
用新设的密码就能正常登录了；
