error message
Mysql is installed in the Centos system, and an error is reported when using Naticat to connect to Mysql. The information is as follows:
Host '192.168.237.1' is not allowed to connect to this MariaDB server
solution
1. Enter Mysql
mysql -u root -p
enter password
[root@localhost src]# mysql -u root -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 360
Server version: 10.2.43-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> 2. Enter the mysql database
use mysql;
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
3. View the user's host
select host, user,password from user;
MariaDB [mysql]> select host, user,password from user;
+-----------+------+-------------------------------------------+
| host | user | password |
+-----------+------+-------------------------------------------+
| localhost | root | *D06A34E97174580E449FBB7AAF0481C1744FCB |
| 127.0.0.1 | root | *D06A34E97174580E449FBB7AAF0481C1744FCB |
| ::1 | root | *D06A34E97174580E449FBB7AAF0481C1744FCB |
| % | root | *2470C0C06DEE42F618BB99005ADCA2EC9D1E19 |
+-----------+------+-------------------------------------------+
4 rows in set (0.00 sec)
At this time, it is found that the password corresponding to the host is % is different from the other three, and % means that it is allowed to connect to the Mysql database from any host.
4. Delete the record where host is %
delete from user where host = '%';
MariaDB [mysql]> delete from user where host = '%';
Query OK, 1 row affected (0.00 sec)
5. Authorization allows connection from any host
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'xxx' WITH GRANT OPTION;
- Note: xxx is the password of the root user. If you change other users, you can change root to other users.
MariaDB [mysql]> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'xxx' WITH GRANT OPTION;
Query OK, 0 rows affected (0.00 sec)
MariaDB [mysql]> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
6. Refresh the authorization to make it effective
FLUSH PRIVILEGES;
MariaDB [mysql]> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)I feel that the above steps 5 and 6 can be combined into one step, and the host is changed to %, and the password is the other 3 passwords, but I haven’t tried it. I can try it next time.
update user set password = 'xxxx' where host = '%';