2.2. ERROR 1129 (00000): Host 'XXXXXX' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'
連接在中途被中斷了的連接請求。在 max_connect_errors次失敗請求後，mysql阻止該主機進一步的連接，直到管理員執行命令 mysqladmin flush-hosts。
mysql> flush hosts;
set global max_connect_errors=1000;
max_connect_errors=10000