Centos伺服器下mysql的root密碼忘記解決方案

1．修改MySQL的登入設定：

# vi /etc/my.cnf在[mysqld]的段中加上一句：skip-grant-tables例如：[mysqld]datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sockskip-grant-tables儲存並且退出vi。2．重新啟動mysqld# /etc/init.d/mysql restartStopping MySQL: [ OK ]Starting MySQL: [ OK ]3．登入並修改MySQL的root密碼# /usr/bin/mysqlWelcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 3 to server version: 3.23.56Type 'help;' or '\h' for help. Type '\c' to clear the buffer.mysql> USE mysql ;Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql> UPDATE user SET Password = password ( 'new-password' ) WHERE User = 'root' ;Query OK, 0 rows affected (0.00 sec)Rows matched: 2 Changed: 0 Warnings: 0mysql> flush privileges ;Query OK, 0 rows affected (0.01 sec)mysql> quitBye4．將MySQL的登入設定修改回來# vi /etc/my.cnf將剛才在[mysqld]的段中加上的skip-grant-tables刪除儲存並且退出vi。5．重新啟動mysqld# /etc/init.d/mysql restartStopping MySQL: [ OK ]Starting MySQL: [ OK ]