Re: [FC3] Sites 'disappearing' from DNS

From: Nigel Wade (nmw_at_ion.le.ac.uk)
Date: 04/06/05

  • Next message: Mark Sargent: "Re: xinetd.d listening twice on port 69" 
    Date: Wed, 06 Apr 2005 09:38:21 +0100
To: For users of Fedora Core releases <fedora-list@redhat.com>

    Brian Fahrlander wrote:
    > On Mon, 2005-04-04 at 23:36 +0200, Jean Francois Martinez wrote:
    >
    >>What could be happenning is that your ISP is rotating his machines on
    >>DNS and sending your notifications through DHCP. But you have a static
    >>configuration for named so it is pointing at machines who for some
    >>reason don't have up to date data. You have to read the DHCP
    >>documentation in order for it updating your named config, and, very
    >>important, firewall config and then restarting both.
    >
    >
    > No, I'm on a static IP, and the problem was two different
    > applications not sharing the same information- "host" could find it in a
    > flash, but Firefox wouldn't...even immediately after it.
    >
    > Thankfully, "ncsd -i host" on the command line nailed it.
    >
    > Thanks, though!
    >

    Given that nscd is the "problem", you can alter the time for which nscd
    caches failed DNS lookups. In /etc/nscd.conf change the timeout value in

    negative-time-to-live hosts 300

    to a smaller value than 300 seconds. 

    -- 
Nigel Wade, System Administrator, Space Plasma Physics Group,
             University of Leicester, Leicester, LE1 7RH, UK
E-mail :    nmw@ion.le.ac.uk
Phone :     +44 (0)116 2523548, Fax : +44 (0)116 2523555
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  • Next message: Mark Sargent: "Re: xinetd.d listening twice on port 69"

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