hadoop-05-mysql修改密码

su root

1,service mysqld start

2,vi /var/log/mysqld.log #在这里面查找密码

3, mysql -uroot -p刚刚找到的密码

4，service mysqld stop

5，mysqld_safe --skip-grant-tables &

6，mysql -uroot -p #不需要密码就登录了；

update mysql.user set authentication_string=password('root') where user='root' ;

exit

service mysqld stop

service mysqld start

7， mysql -uroot -proot

set global validate_password_policy=0;

set global validate_password_length=1;

alter user 'root'@'localhost' identified by 'root';