MySQL数据库被锁定的问题解决

[clog@MC-FSB ~]$mysql -uroot -h192.168.10.18 -p
Enter password: 
ERROR 1129 (HY000): Host '192.168.10.10' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'

tail -n 200 /var/log/mysqld.log

 set global max_connect_errors = 1000;

max_connect_errors = 1000

[admin@wmsweb log]$ mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1853635
Server version: 5.7.25 MySQL Community Server (GPL)

Copyright (c) 2000, 2019, 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> 
mysql> flush hosts;
Query OK, 0 rows affected (0.00 sec)

mysql> show global variables like '%max_connect_errors%';
+--------------------+-------+
| Variable_name      | Value |
+--------------------+-------+
| max_connect_errors | 100   |
+--------------------+-------+
1 row in set (0.01 sec)

mysql> set global max_connect_errors=1000;
Query OK, 0 rows affected (0.00 sec)

mysql> show global variables like '%max_connect_errors%';
+--------------------+-------+
| Variable_name      | Value |
+--------------------+-------+
| max_connect_errors | 1000  |
+--------------------+-------+
1 row in set (0.00 sec)

mysql> 

[clog@MC-FSB ~]$mysql -uroot -h192.168.10.18 -p
Enter password: 
ERROR 1129 (HY000): Host '192.168.10.10' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'
[clog@MC-FSB ~]$mysql -uroot -h192.168.10.18 -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1853636
Server version: 5.7.25 MySQL Community Server (GPL)

Copyright (c) 2000, 2021, Oracle and/or its affiliates.

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> 

mysql> show variables like 'max_connect_errors';
+--------------------+-------+
| Variable_name      | Value |
+--------------------+-------+
| max_connect_errors | 100   |
+--------------------+-------+
1 row in set (0.07 sec)

mysql> set global host_cache_size=0;

vi /etc/my.cnf

skip-name-resolve

[root@dbserver ~]# mysql -h127.0.0.1 -u root -p         
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'127.0.0.1' (using password: YES)

[root@localhost ~]# mysql -uroot -h127.0.0.1 -p123456 -P3306
Warning: Using a password on the command line interface can be insecure.
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)