MySQL host is blocked because of many connection errors; 解决方法

MySQL host is blocked because of many connection errors; 报错

surroundings

Operating System: Linux

Database: mysql5.7.27

 

Error message

jHost '10.146.5.209' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'Connection closed by foreign host.

the reason

Produce much the same ip short period of time (more than the maximum mysql database max_connection_errors of) the database connection interruption caused by blockage;

Solution

The first: increasing the number of allowed max_connect_errors (this method does not completely)

 

    Login Mysql database View max_connect_errors: show variables like 'max_connect_errors';

 

    Max_connect_errors number of modified 1000: set global max_connect_errors = 1000;

 

    To see if the amendment is successful: show variables like 'max_connect_errors';

 

The first: to increase the number of allowed max_connect_errors

 

 

whereis mysqladmin mysqladmin of the search path

 

　 Use the command Modified:

 

           / Usr / bin / mysqladmin flush-hosts -h host ip -uroot -p

 

　 Remarks:

 

　　 If you are configuring a master and slave are also needed to clean up the backup again

 

 The second step may be performed in a database, the database login command is as follows:
        MySQL> the flush the hosts;