mysql从5.0.86升级到5.5.13后,客户反映连接速度非常慢,查看mysql数据库的错误日志有如下信息:
110617 14:04:10 [Warning] IP address '19.200.90.16' could not be resolved: Temporary failure in name resolution
110617 14:07:48 [Warning] IP address '19.200.57.44' could not be resolved: Temporary failure in name resolution
经排查得知,主机/etc/resolv.conf中dns服务器地址设置不对,更改为正确的DNS地址就OK了。
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