[ale] Question about bind server behavior.

[Jim Kinney]

Also be aware that some systems use a local caching daemon, nscd , that
uses it own TTL as time from its last lookup/store of that address. It must
be manually flushed. Restart recycles cache data.
On Jan 25, 2014 12:45 PM, "Michael H. Warfield" <mhw at wittsend.com> wrote:

> On Sat, 2014-01-25 at 12:13 -0500, JD wrote:
> > There is always the TTL for the DNS record involved.  I go with 7 days
> most of
> > the time to allow caching, but if I know changes are coming, I'll drop
> it to 30
> > min the day before, then 5 min on the day of the changes.
>
> Yes, but he queried the master authoritative name server directly, so
> that doesn't apply in his case.  The TTL applies to caching resolvers
> and recursive name servers.  Even the authoritative slaves will get
> updated rapidly, as soon as they get the notify from the master as it
> reloads the updated zone and they'll issue an AXFER to repull the zone.
>
> > Don't know if this helps you are not.
> >
> > On 01/25/2014 12:07 PM, Jim Lynch wrote:
> > > One of my host providers changed the IP address of my server.  I went
> to the
> > > bind server that provides the master records and changed the IP
> address in the
> > > tables.  I restarted bind and then did a dig @<masterdnsserver>
> > > <serverwithnewaddress> and it reports the old IP address.  Is
> something caching
> > > that information?
> > >
> > > I thought that if I provided a server to dig it asked the system
> directly.  I
> > > guess I need to go back to school.
> > >
> > > Jim.
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> --
> Michael H. Warfield (AI4NB) | (770) 978-7061 |  mhw at WittsEnd.com
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