MySQL CentOS: доступ запрещен для пользователя '@' localhost 'в базу данных

Question

Я установил MySQL в CentOS, используя sudo yum install mysql-server и вошел в MySQL, используя mysql -u root -p и дал пустой пароль. Это не позволяет мне использовать базу данных MySQL или выбирать пользователей/обновлять пароль/создавать базу данных.

mysql> select user(); 
+----------------+ 
| user()   | 
+----------------+ 
| root@localhost | 
+----------------+ 
1 row in set (0.00 sec) 

mysql> use mysql; 
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'mysql' 

mysql> UPDATE user SET Password=PASSWORD('*****') WHERE user='root'; 
ERROR 1046 (3D000): No database selected 

mysql> show grants; 
+--------------------------------------+ 
| Grants for @localhost    | 
+--------------------------------------+ 
| GRANT USAGE ON *.* TO ''@'localhost' | 
+--------------------------------------+ 
1 row in set (0.00 sec) 


[centos@****~]$ sudo /sbin/service mysqld stop 
Redirecting to /bin/systemctl stop mysqld.service 
[centos@****~]$ sudo mysqld_safe 
151026 14:40:32 mysqld_safe Logging to '/var/log/mysqld.log'. 
151026 14:40:32 mysqld_safe A mysqld process already exists 
[centos@*****~]$ mysql -u root 
Welcome to the MySQL monitor. Commands end with ; or \g. 
Your MySQL connection id is 152 
Server version: 5.6.27 MySQL Community Server (GPL) 

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. 

Oracle is a registered trademark of Oracle Corporation and/or its 
affiliates. Other names may be trademarks of their respective 
owners. 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. 

mysql> use mysql; 
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'mysql' 
mysql> 

Ошибка снова:

[centos@~]$ sudo /sbin/service mysqld stop 
Redirecting to /bin/systemctl stop mysqld.service 
[centos~]$ sudo mysqld_safe --skip-grant-tables & 
[1] 25678 
[centos~]$ 151026 14:53:07 mysqld_safe Logging to '/var/log/mysqld.log'. 
151026 14:53:07 mysqld_safe A mysqld process already exists 

[1]+ Exit 1     sudo mysqld_safe --skip-grant-tables 
[centos@~]$ sudo mysql -u root 
Welcome to the MySQL monitor. Commands end with ; or \g. 
Your MySQL connection id is 160 
Server version: 5.6.27 MySQL Community Server (GPL) 

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. 

Oracle is a registered trademark of Oracle Corporation and/or its 
affiliates. Other names may be trademarks of their respective 
owners. 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. 

mysql> use mysql; 
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'mysql' 

Пожалуйста, дайте мне знать, как решить эту проблему.

Answer 1

1. sudo /etc/init.d/mysql stop
2. sudo mysqld_safe --skip-grant-tables &
3. sudo mysql -u root

4. Настройка пароля нового MySQL суперпользователя

   use mysql; 
   update user set password=PASSWORD("NEW-ROOT-PASSWORD") where User='root'; 
   flush privileges; 
   quit 
   

5. Остановить MySQL сервер: sudo /etc/init.d/mysql stop (если использование ошибок sudo)

6. сервер MySQL Start и протестировать его: sudo mysql -u root -p

Answer 2

Если у вас нет набора пароля, вы не можете дать -p параметр с помощью команды MySQL. Запустите его только с mysql -u root