Many A-records

Alan Schwartz alansz at tala.mede.uic.edu
Tue Apr 6 03:19:21 UTC 2004


fih <frhak at hotmail.com> writes:
>IP management tools like Lucent QIP for example is built up around that
>every IP only have one A-record and if you need more names you will have to
>use aliases. (There are ways aorund it but it's not default)

That a tool requires a certain paradigm does not make that paradigm
ideal or the only correct one. Personally, I think this is a failing
in the tool - insufficient flexibility.

>This is how i do it:
>
>domain.com. IN A 1.1.1.1
>
>domain.com. IN MX 5 unixbox.domain.com.
>
>unixbox.domain.com. IN A 1.1.1.1
>
>www.domain.com. IN CNAME unixbox.domain.com.
>
>ftp.domain.com. IN CNAME unixbox.domain.com.
>
>1.1.1.1.IN-ADDR.ARPA. IN PTR unixbox.domain.com.
>
>This is good DNS management with my knowledege.

There is nothing wrong with the way you're doing it, although it
increases lookups required. There is also nothing wrong with making
those CNAME records into A's pointing to 1.1.1.1, just as you have
both domain.com and unixbox.domain.com pointing to the same address.
Both are reasonable DNS management strategies under different
conditions.

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
                       Alan Schwartz <alansz at uic.edu>
Author of: "Managing Mailing Lists", "Stopping Spam" (Schwartz & Garfinkel),
"Practical Unix & Internet Security, 3rd Ed" (Garfinkel, Spafford, Schwartz)
       Published by O'Reilly and Associates, Inc. (http://www.ora.com)
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