mysql出现这样的错误日志提示：
2022-04-12 03:03:35 4686 [Warning] Host name 'hn.kd.ny.adsl' could not be resolved: Name or service not known
2022-04-12 03:35:45 4686 [Warning] Host name 'hn.kd.ny.adsl' could not be resolved: Name or service not known
2022-04-12 04:09:04 4686 [Warning] Host name 'hn.kd.ny.adsl' could not be resolved: Name or service not known
2022-04-12 05:15:06 4686 [Warning] Host name 'hn.kd.ny.adsl' could not be resolved: Name or service not known
2022-04-12 05:44:03 4686 [Warning] Host name 'hn.kd.ny.adsl' could not be resolved: Name or service not known会导致mysql查询变慢，需要修改mysql配置参数
[mysqld]
skip-host-cache
skip-name-resolve不再进行反解析
重启数据库服务
