Host ‘hostname’ is blocked because of many connection errors; unblock with 'mysqladmin.

Host '123.138.86.214' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 登錄linux服務器 1.執行以下命令：mysqladmin flush-hosts  -uroot -p 2.輸入數據庫連接密碼

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