在MariaDB配置文件/etc/my.cnf [mysqld]中加入skip-grant-tables一行：
[Richard@localhost ~]$ sudo vi /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-grant-tables #加入这一行
# Disabling symbolic-links is reco
重启服务：
[Richard@localhost ~]$ sudo systemctl restart mariadb.service
进入MariaDB修改root密码：
[Richard@localhost ~]$ mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is
Server version: 5.5.-MariaDB-wsrep MariaDB Server, wsrep_25..r4026 Copyright (c) , , Oracle, Monty Program Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> 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
MariaDB [mysql]> show tables
-> ;
+---------------------------+
| Tables_in_mysql |
+---------------------------+
| columns_priv |
| db |
| event |
| func |
| general_log |
| help_category |
| help_keyword |
| help_relation |
| help_topic |
| host |
| ndb_binlog_index |
| plugin |
| proc |
| procs_priv |
| proxies_priv |
| servers |
| slow_log |
| tables_priv |
| time_zone |
| time_zone_leap_second |
| time_zone_name |
| time_zone_transition |
| time_zone_transition_type |
| user |
+---------------------------+
rows in set (0.00 sec) MariaDB [mysql]> UPDATE user SET Password = password ( ' ) WHERE User = 'root' ;
Query OK, rows affected (0.03 sec)
Rows matched: Changed: Warnings: MariaDB [mysql]> flush privileges;
Query OK, rows affected (0.01 sec) MariaDB [mysql]> exit
重启服务即可登陆：
[Richard@localhost ~]$ sudo systemctl restart mariadb.service
[Richard@localhost ~]$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is
Server version: 5.5.-MariaDB-wsrep MariaDB Server, wsrep_25..r4026 Copyright (c) , , Oracle, Monty Program Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> exit