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出现大量告警Read UDP错误,i/o超时 #20

@Dodotry

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@Dodotry

基于coredns源代码,添加dnsredir插件编译后,出现较多的i/o timeout,主机上已对内核的相关TCP参数优化,好像没有改善,有遇到这问题的吗?有什么方式能优化调整?

[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 7.7.22.2:53924->119.29.29.29:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:34824->202.130.97.65:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 7.7.22.2:49496->223.5.5.5:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:59482->202.130.97.65:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:39944->202.130.97.65:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:60629->8.8.8.8:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:49605->202.130.97.65:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 7.7.22.2:59442->114.114.114.114:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 7.7.22.2:49845->223.5.5.5:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:38189->1.1.1.1:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:42711->1.1.1.1:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:39886->202.130.97.65:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 7.7.22.2:46461->114.114.114.114:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:46362->202.130.97.65:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 7.7.22.2:55348->114.114.114.114:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 7.7.22.2:49217->114.114.114.114:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 172.31.180.141:52597->1.1.1.1:53: i/o timeout
[WARNING] plugin/dnsredir: Exchange() failed  error: read udp 7.7.22.2:58954->114.114.114.114:53: i/o timeout

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