先貼上linux下mysql的幾個重要目錄 安裝路徑不同 可能目錄也不同 不要太死板
Linux MySQL的幾個重要目錄
1、數據庫目錄
/var/lib/mysql/
2、配置文件
/usr/share /mysql(mysql.server命令及配置文件)
3、相關命令
/usr/bin(mysqladmin mysqldump等命令)
4、啓動腳本
/etc/rc.d/init.d/(啓動腳本文件mysql的目錄)
首先找到數據庫的配置文件 my.cnf (路徑不同請用 find查找)修改MySQL的登錄設置:
# vi /etc/my.cnf
在[mysqld]的段中加上一句:skip-grant-tables
例如:
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-grant-tables
保存並且退出vi。
3.重新啓動mysqld
# /etc/init.d/mysqld restart
Stopping MySQL: [ OK ]
Starting MySQL: [ OK ]
4.登錄並修改MySQL的root密碼
# /usr/bin/mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3 to server version: 3.23.56
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
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 ( 'new-password' ) WHERE User = 'root' ;
Query OK, 0 rows affected (0.00 sec)
Rows matched: 2 Changed: 0 Warnings: 0
mysql> flush privileges ;
Query OK, 0 rows affected (0.01 sec)
mysql> quit
Bye
5.將MySQL的登錄設置修改回來
# vi /etc/my.cnf
將剛纔在[mysqld]的段中加上的skip-grant-tables刪除
保存並且退出vi。
6.重新啓動mysqld
# /etc/init.d/mysqld restart
Stopping MySQL: [ OK ]
Starting MySQL: [ OK ]