How to configure Fail2Ban to protect MySQL 8

Operating system: Ubuntu
OS version: 20.04.3

Howdy!,

First of all, I tried to run this by selecting from Fail2ban Intrusion Detector Log Filters → MySqld-Auth and Filter Action Jails → MySqld-Auth with settings:
Action iptables-multiport
Port 3306,33060
Protocol TCP
Log file paths %(mysql_log)s

And it did not work, the fail2ban did not start because could not find a log.

In the tab Webmin → System → System Logs I created file /var/log/mysqld.log with settings:
Facilities auth
Priorities all

After changing logpath = %(mysql_log)s to logpath = /var/log/mysqld.log it does not work.

And more, In the file /etc/my.cnf inserted strings:
[mysqld]
log_error = /var/log/mysqld.log
log-warnings = 2

And it still does not work.

On this, my searches on the forum and the Internet did not give me the resulting options.
Any help will be grateful.

Sincerely.

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