MariaDB：登陆报错：mysqladmin: connect to server at 'localhost' failed

见图：

解决办法：

1. /etc/init.d/mysqld stop
2. mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
3. mysql -uroot –p
4. mysql> UPDATE user SET Password=PASSWORD('新的密码') where USER='root' and hos t='root' or host='localhost';
5. mysql> FLUSH PRIVILEGES;
6. mysql> quit;
7. /etc/init.d/mysqld start
8. mysql -uroot –p  输入新的密码