1、知道mysql旧密码,修改新密码
a.mysqladmin命令(回目录)
mysqladmin -u USER -p password PASSWORD
b.先用root帐户登入mysql,然后执行:
UPDATE user SET password=PASSWORD(‘123456‘) WHERE user=‘root‘;
FLUSH PRIVILEGES;
c.用root命令登入mysql,然后执行:
SET PASSWORD FOR root=PASSWORD(‘123456‘);
2、忘记mysql密码
修改配置文件/etc/my.cnf,在mysqld段下面增加如下参数,之后重启mysql
skip-grant-tables
此时登陆mysql无需密码,
UPDATE user SET password=PASSWORD(‘123456‘) WHERE user=‘root‘;
FLUSH PRIVILEGES;
用root命令登入mysql,然后执行: SET PASSWORD FOR root=PASSWORD(‘123456‘);
再次在配置文件中把增加的那个参数去掉,重启mysql即可
实践操作命令:
killall mysqld
mysqld_safe --skip-grant-tables --user=mysql &
update mysql.user set password=password("123456") where user=‘root‘ and host=‘localhost‘;
flush privileges;
mysqladmin -u root -p123456 shutdown
/etc/init.d/mysqld start
mysql -u root -p123456
原文地址:https://blog.51cto.com/12083623/2353171