mysql登錄錯誤或者密碼錯誤

一、mysql登錄錯誤

mysqladmin: connect to server at 'localhost' failed error: 'Access denied for user 'root'@'localhost' (using password: YES)' 解決辦法：破解mysql密碼 #> service mysqld stop #>mysqld_safe --skip-grant-tables & 輸入 mysql -uroot -p 回車進入 >use mysql; > update user set password=PASSWORD("newpass")where user="root"; 更改密碼為 newpassord > flush privileges; 更新權限 > quit 退出 service mysqld restart mysql -uroot -p新密碼進入 二，忘記本地root的登錄密碼 解決過程： 1、編輯/etc/my.cnf 在[mysqld] 配置部分添加一行 skip-grant-tables 2、保存后重啟mysql [root@localhost etc]# service mysqld restart Shutting down MySQL. [ OK ] Starting MySQL. [ OK ] 3、登錄數據庫重新設置root密碼 [root@localhost ~]# mysql -uroot -p mysql Enter password: 直接回車進入 Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.1.47-log Source distribution Copyright (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 license Type '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) 執行下列語句 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、刪除/etc/my.cnf文件中添加的“skip-grant-tables”行，重啟mysql； 用新設的密碼就能正常登錄了； 原諒我沒有認真學過mysql吧。以上都是在網上找到的解決辦法，拿過來直接保存了。