Hi Satay, On 19.02.2020 09:09, Satay Epic wrote: > Hello, > > I've NGINX 1.12-1 running on CentOS 7.2 and being used for DNS load > balancing. However I'm seeing lots of errors in the "dns.log".. I've > no access to the system right now but error was like.. "No response > received from the upstream server" The occurrence of the errors is no > continuous but it's pretty frequent. > > The three backend servers are Windows 2012 R2 DNS servers > > I will provide the nginx.conf details soon. > > I may have to do some tuning besides upgrade to an appropriate version > I guess. Can anyone help to suggest/recommend tuning to minimize the > errors or rather not to have them at all? > What I can recommend is to upgrade nginx 1.12 to the most recent 1.17 version (i.e. 1.17.8). We added tons of improvements into the tcp/udp load balancing capabilities since 1.12 times.
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