[320] in Hesiod
Re: Info please = High Availability
daemon@ATHENA.MIT.EDU (Adam Safier)
Thu Aug 1 12:36:11 1996
Date: Thu, 01 Aug 1996 12:30:04 -0700
From: Adam Safier <asafier@csc.com>
Reply-To: asafier@csc.com
To: Theodore Ts'o <tytso@MIT.EDU>
Cc: amit@jpmorgan.com, hesiod@MIT.EDU
Theodore Ts'o wrote:
> In any case, this isn't a hesiod issue, so we should perhaps move it to
> a more appropriate forum --- such as the bind-users list.
I will. Thanks for the help and suggestion. Hope you don't mind if I
quote you.
What is the use of Hesiod if all it does is emulate IN type records? I
got the Hesiod white paper (1988?) off the MIT server and it seems that
everything you can do with HS you can do with regular IN entries. The
big thing with HS seems to be using TXT for additional info. Why not
use IN TXT instead?
>
> ... Run BIND on your local
> client, and it will automatically keep track of which one of the your
> DNS server is responding the most quickly, and use the fastest server
> automatically.
That does sound like the ideal DNS server selection mechanism.
What I'm really looking for is high availability at the application
server, not DNS server. One of the issues is disaster recovery - we
have a local hot spare application server and a remote hot spare site
(with application server and alternate routing, etc.) Local high
availability software is a pain and hard to set up to a remote site so
the remote site needs it's own IP subnet. Hence the need for multiple
IP addresses under the same name - the "clients" don't care who is up as
long as some is. The current model has the clients having to change
server names and I hoped we could simply provide a list of IP addresses
to try but control the sequence of wich app server was tried first.
Anyway, I'll chase this elsewhere. Can you give me the link to the DNS
mailing list? (I already have the News Group)
Thanks,
Adam Safier asafier@csc.com
CSC-SED-Infosec (301) 794-1349
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