24.6.2 The INFORMATION_SCHEMA CONNECTION_CONTROL_FAILED_LOGIN

24.6.2 The INFORMATION_SCHEMA CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS Table

This table provides information about the current number of consecutive failed connection attempts per account (user/host combination). The table was added in MySQL 5.7.17.

CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS has these columns:

USERHOST
The user/host combination indicating an account that has failed connection attempts, in 'user_name'@'host_name' format.
FAILED_ATTEMPTS
The current number of consecutive failed connection attempts for the USERHOST value. This counts all failed attempts, regardless of whether they were delayed. The number of attempts for which the server added a delay to its response is the difference between the FAILED_ATTEMPTS value and the connection_control_failed_connections_threshold system variable value.

Notes

The CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS plugin must be activated for this table to be available, and the CONNECTION_CONTROL plugin must be activated or the table contents are always empty. See Section 6.4.2, “The Connection-Control Plugins”.
The table contains rows only for accounts that have had one or more consecutive failed connection attempts without a subsequent successful attempt. When an account connects successfully, its failed-connection count is reset to zero and the server removes any row corresponding to the account.
Assigning a value to the connection_control_failed_connections_threshold system variable at runtime resets all accumulated failed-connection counters to zero, which causes the table to become empty.