mysql连接报错 Host ‘xxx’is blocked because of many connection errors;unblock with 'mysqladmin flush-hosts'
程序无法连接MySQL,提示:
null, message from server: "Host '192.168.6.68' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'"
原因：同一个ip在短时间内产生太多（超过mysql数据库max_connection_errors的最大值）中断的数据库连接而导致的阻塞；
解决办法：
进入mysql安装目录用mysqladmin命令执行 flush-hosts就搞定了，如在我的linux系统中
/usr/local/mysql5.5.35/bin/mysqladmin -u root -p flush-hosts
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