Have you checked to see if there is another machine using the same IP? > On Mar 3, 2015, at 4:40 PM, Job <j...@colliniconsulting.it> wrote: > > I tried to tune kernel, with SOMAXCONN but with no solutions! > When DNS queries raise up over 300 queries per second, bind has huge timeouts > and often does not respond. > If i work on an ip alias, everything is right! > > it seems bind has some limit based on local ip address. > > is there any solutions? > > Thank you again! > Francesco > > ________________________________________ > Da: bind-users-boun...@lists.isc.org [bind-users-boun...@lists.isc.org] per > conto di Job [j...@colliniconsulting.it] > Inviato: martedì 3 marzo 2015 11.43 > A: bind-users@lists.isc.org > Oggetto: Too many connections on the same IP > > Hello, > > during a massive DNS utilization our Bind 9.10.1-P1 seems not to resolve > anymore, neither local zone. > We shutdown one of the two nodes and all queries arrived only on one node. > > CPU and memory load were not too overloaded, machine was quite fine. > > After some fast tests, i noticed that if from clients i used an ip alias of > Bind server, it worked perfectly! > > Only on main ip there were congestion problems, but resolving on ip aliases > worked fastly! > > Where was i wrong? > > Thank you! > Francesco > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list
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