thanks but I think nginx should not always pending requests and retry dns forever。and inconsistent response to the first request and follow requests is also a problem. either all as a timeout processing, either all waiting dns response
may be nginx need change this behavior 2014-08-20 14:41 GMT+08:00 SmallAnt <[email protected]>: > this module can help you ! > HttpUpstreamJdomainModule, http://wiki.nginx.org/HttpUpstreamJdomainModule > . > > It buffers the latest IPs of the host,even local dns server down, nginx > will work well. > > > On Tue, Aug 19, 2014 at 1:43 PM, ywsample <[email protected]> wrote: > >> http { >> resolver 127.0.0.1; >> resolver_timeout 1s; >> server { >> listen 8000; >> location /test { >> proxy_pass http://$arg_host:8080; >> } >> } >> server { >> listen 8080; >> ....... >> } >> } >> ps: other configure is normal >> >> I have recently discoverd that when DNS server down, the first proxy >> request return 504 and than the follow proxy request may hang forever. >> I use two curl simulate concurrent requests >> >> I found than the first request timeout in 1 second and exit, also it >> delete the timeout timer. because another request waiting dns response, so >> nginx retry send dns query, but dns never response(because it down), it >> lead to the follow request hang and also no timer relate to it; >> >> PS：base on nginx-1.7.4 >> -- >> ywsample :) >> >> >> _______________________________________________ >> nginx mailing list >> [email protected] >> http://mailman.nginx.org/mailman/listinfo/nginx >> > > > _______________________________________________ > nginx mailing list > [email protected] > http://mailman.nginx.org/mailman/listinfo/nginx > -- ywsample :)
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