Can you yet provide the content of /etc/nsswitch.conf (just the "hosts:" line) and /etc/resolv.conf (you can obfuscate the real IP addresses of nameservers with "1.2.3.4") from the machine?
We had similar problem report from other user who is however using "mdns" and "nis" nameservice - the problem seems to be the getaddrinfo() implementation and its backend. We were unable to replicate the problem with plain "files, dns" settings. Regards, Martin On May 7, 2012, at 11:27 AM, David Kohen wrote: > We're using Ubuntu 10.04.4 LTS, x64 (on Amazon AWS). > No NSCD > > David Kohen > Waze IFS team. > > > > > Date: Wed, 2 May 2012 11:18:59 +0200 > From: Martin Pala <mart...@tildeslash.com> > To: The monit developer list <monit-dev@nongnu.org> > Subject: Re: [monit-dev] Resolver issue > Message-ID: <68790c09-8b92-43e0-91b4-39b08cb83...@tildeslash.com> > Content-Type: text/plain; charset=iso-8859-1 > > Hello David, > > monit doesn't cache the resolved names nor nameservers - it uses the (libc's) > getaddrinfo() interface to resolve the hostnames when necessary. Please can > you provide more informations about the system so we can try to replicate the > problem? (platform, OS, version). Do you use nscd? (name service caching > daemon) > > Regards, > Martin > > > On May 1, 2012, at 1:44 PM, David Kohen wrote: > > > Hello, > > We had an issue with our primary internal DNS server, we had to replace it. > > I have notices that a heartbeat check is taking about 5 seconds whereas on > > other servers, it was in the area of 0.01 seconds. > > After a restart of the monit daemon, it did the heartbeat in 0.016 seconds, > > which made me realize that the daemon is caching the nameservers to speed > > up lookups, but this makes it difficult to do changes in the nameservers > > without restarting the daemon. > > Could this behavior be changed or is it something that could never be > > changed? > > > > David Kohen > > Waze IFS team. > > > > _______________________________________________ > > monit-dev mailing list > > monit-dev@nongnu.org > > https://lists.nongnu.org/mailman/listinfo/monit-dev > > > > > ------------------------------ > > _______________________________________________ > monit-dev mailing list > monit-dev@nongnu.org > https://lists.nongnu.org/mailman/listinfo/monit-dev
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