MySQL修改密码

mysqladmin -uroot password "new123";

1)mysqladmin -uroot -poldboy123 password "new123";
2)mysql>update mysql.user set password=password("oldboy123") where user=‘root‘ and host=‘localhost‘;
mysql>flush privileges;
3)mysql> set password=password("123");

1）首先关闭mysql
2) 跳过验证启动 mysqld_safe --skip-grant-tables &
3）使用修改mysql密码的方式进行修改建议（第二种方法）
4）重新启动mysql

mysql> grant all privileges on *.* to ‘system‘@‘localhost‘ identified by ‘oldboy123‘ with grant option;
mysql> flush privileges;

mysqladmin -uroot -poldboy123 password "new123" -S /data/3306/mysql.sock

mysqld_safe --defaults-file=/data/3306/my.cnf --skip-grant-tables &