Date: Sun, 16 Dec 2001 00:20:28 -0800 From: Derrick John Klise <derrick@lumiere.net> To: Jeff Lasman <jblists@nobaloney.net> Cc: freebsd-isp@freebsd.org Subject: Re: Using DNAT and DNS round-robin Message-ID: <20011216002028.A1264@leaf.lumiere.net> In-Reply-To: <3C1C270F.164076BA@nobaloney.net>; from jblists@nobaloney.net on Sat, Dec 15, 2001 at 08:46:07PM -0800 References: <PGECILGGNJGDPJKLFEMIMEJGCIAA.dpuryear@usa.net> <196254713265.20011209213749@hostonfly.com> <3C1C270F.164076BA@nobaloney.net>
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On Sat, Dec 15, 2001 at 08:46:07PM -0800, Jeff Lasman wrote:
> Are you sure? I've been looking for a definitive answer in my DNS &
> Bind book for about an hour now, and I'm still not certain <frown>. Any
> page references welcome <smile>.
IIRC, something like:
monkey.example.net IN A 192.168.0.1
IN A 192.168.0.2
IN A 192.168.0.3
> And how about failure rollover? We'd like to offer clients
> geographically dispersed hosting; there's a call for it since September
> 11th showed everyone of the hazards of hosting at only one location.
> But I don't think we can rely on short TTL; too many large ISPs seem to
> ignore it <frown>.
> Is there a way to handle high-availability strictly in DNS?
Possibly; I'm unaware of one if there is, though.
If you're not too worried about the TTL problem, you could set up a monitoring
program to remove an entry from the rotation if it's corresponding address
becomes unavailable, then add it when it comes back up.
--
Derrick John Klise <derrick@lumiere.net>
"I went into a general store, and they wouldn't sell me anything
specific". -- Steven Wright
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