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This article introduces the relevant knowledge of "how to solve MySql Host is blocked because of many connection errors errors in mysql". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Error: Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'

Reason:

Blocking caused by too many database connections interrupted by the same ip in a short period of time (exceeding the maximum of mysql database max_connection_errors)

Solution:

1. Increase the number of max_connection_errors allowed (address the symptoms but not the root of the problem):

① enters the Mysql database to view max_connection_errors: show variables like'% max_connection_errors%'

The number of max_connection_errors modified by ② is 1000: set global max_connect_errors = 1000

③ to check whether the modification is successful: show variables like'% max_connection_errors%'

2. Use the mysqladmin flush-hosts command to clean up the hosts file (I don't know in which directory mysqladmin can use the command to find: whereis mysqladmin)

① uses the command to modify the directory found: / usr/bin/mysqladmin flush-hosts-h292.168.1.1-P3308-uroot-prootpwd

Remarks:

The port number, user name and password can be added and modified as needed.

Those with master/slave master-slave database have to modify both the master database and the slave database (I only suffered from this loss and ended up with a few commands that were easy to lose).

The second step can also be done in the database with the following command: flush hosts

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