1.testConnect failed: Access denied for user 'adminuser'@'hfa-alpha0017.maple.cn' (using password: YES);
原因 :连接的账号密码错误,修改连接的账号密码
2.MySql Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'
原因 :错误连接数超过最大值,清空错误连接; /usr/bin/mysqladmin flush-hosts -h172.31.96.155 -P3306 -uroot -p1234567 mysql数据库ip 端口,账号 密码 3.testConnect failed: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.; 原因:数据库的服务ip 和端口 不存在,myserver服务异常;
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