Solved

DNS Stop Responding after one line was added

Posted on 2009-07-05
2
171 Views
Last Modified: 2012-05-07
My wuestion is base on the code below. The DNS server is workng now But I do not understand why.Can somebody outhere give or guide to an explanation what was tha I did to make it work?
Is there any tool to check the systaxtof a DNS file? why it have to be so hard to update a namaed file witout messit up?
; Notes
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$ORIGIN domainname.edu.
$TTL	14400
@	IN  	SOA   servername.domainname.edu.                   staff.domainname.edu. (
		; Serial Number YYYYMMDDVV
			; Refresh in
			; Retry in
			; Expire in 
			; Minimum TTL of
        )
		IN	NS	Server1
			NS	Server2
 		IN      A       <IP web site hosted out side premises>
www		IN	CNAME	@
 
Server1		IN	A	<server IP>
Server2		IN	A	<server IP>
 
 
; A records and CNAMEs
name		IN	A	ip number 
name		IN	A	ip number 
name		IN	A	ip number 
name		IN	A	ip number 
 
This was working fine. Now I included the line on; A records and CNMES as:
 
kbp           IN      A       <IP hostess outside our premises>
 
And the DNS stopped working (the idea here was that anyone can type n the address browse kbp.domainname.edu and will go to the right web site. It was just a redirection
 
Now After many changes and many questions the line that worked was:
 
Forentdomain.com.   IN   A          < IP hostess outside our premises>
kbp                 IN   CNAME      Forentdomain,com.
 
So the dns dis not work with
; A records and CNAMEs
name		IN	A	ip number 
name		IN	A	ip number 
name		IN	A	ip number 
name		IN	A	ip number 
kbp         IN    A       <IP hostess outside our premises>
 
But it worked now with:
name		IN	A	ip number 
name		IN	A	ip number 
name		IN	A	ip number 
name		IN	A	ip number 
Forentdomain.com.   IN   A  < IP hostess outside our premises>
kbp                 IN   CNAME      Forentdomain.com.
====why the forentdomain.com.  works on theeft side of the file? it should not be at the right side?????======

Open in new window

0
Comment
Question by:Jorge-123
2 Comments
 
LVL 30

Accepted Solution

by:
Kerem ERSOY earned 500 total points
ID: 24779616
Hi,,
there are several problems with your SOA record, The commented areas should have some values such as:

You dont need this line:
$ORIGIN domainname.edu.

Please modify the values such as these:


$TTL    7200
@       IN      SOA   servername.domainname.edu.                   staff.domainname.edu. (
                       2009070401  ; Serial Number YYYYMMDDVV
                       3600              ; Refresh in
                       600                ; Retry in
                       1209600        ; Exipires
                        7200             ; Minimum TTL of
        )

For acceptable values for these values please see RFC-1912 and RFC-2308.

There's no problem with the definition:

kbp           IN      A       <IP hostess outside our premises>

It should normally work but I guess the problems with SOA has prevented it.

For a detailed problem record see your /var/log/messages file.



 
0
 

Author Comment

by:Jorge-123
ID: 24781033
KeremE:
Thanks. I will look for the log files also I will look for the RFC.
When DNS stop responding , the NAMED file started fine but none of the names on the db.domainame.edu was resolving ( ????) .
Is there a utilility that I can test the named  or the databases inside it  that they are well written ? or theore is a way to test this file before puttingit on a live system?
just plain curuiosity.
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Most DNS problems are VERY easily troubleshot and identifiable if you can follow the steps a DNS query takes. I would like to share the step-by-step a DNS query takes from the origin to the destination. _____________________________________________…
Note: for this to work properly you need to use a Cross-Over network cable. 1. Connect both servers S1 and S2 on the second network slots respectively. Note that you can use the 1st slots but usually these would be occupied by the Service Provide…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question