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Re: [webmin-l] Cluster DNS
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From: Grant P. <gp...@th...> - 2006-12-10 10:05:55
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Hi Jamie,
Thanks for you aptience in this matter!
I am still not sure where I stand here as you two replies seem to =
contradict each other.
My ISP will not tell me exactly how they delegate, but they are adiment =
that I can/should setup my arpa zones as if they were /24, and only list =
hosts in it that I am using.
In thier verbage to me, they tell me that its works when 'recusive' is =
turned off. and it is, with the exeption of a few IPs (our office, my =
home, and all the local server machines. From what I read below from my =
ISP, it sounds like they 'forward' the /24 lookups to me and whoever =
else has space in that /24.
Under those conditions, should the 'Update Reverse' work? Also, another =
question I am not clear on, should the host numnber already exist in the =
arpa zone? i.e if I have a block 2-126, should there always be 125 =
numbers listed even if they are not being used?
Here is the last verbage I got from the technician at my ISP:
> -------- Original Message --------
> We can do RFC2317 style in-addr for sub-class-c blocks, but we don't
>
> normally. Instead, we recommend the following:
>
> 1. Customer uses an authoritaive only DNS server (DNS server should =
not be=20
> used for doing recursive lookups).
>
> 2. Customer configures a zone for each class c that contains ips that =
are=20
> being delegated (eg: nnn.nnn.nnn.in-addr.arpa)
>
> Because our DNS servers only forward the requests for the /25, it is =
fine=20
> for the customer to configure the whole /24. This makes configuration =
much=20
> easier for both us and them.
>
> RFC2317 is a pain in the butt.
-Grant
----- Original Message -----=20
From: Jamie Cameron=20
To: Grant Peel ; Webmin users list=20
Sent: Saturday, December 09, 2006 9:17 PM
Subject: Re: [webmin-l] Cluster DNS
Webmin can do automatic reverse DNS entries in non-class-C zones now =
.. it has been improved a lot since the book was written :-)
If your ISP delegates blocks smaller than a class C and you have to =
use that PTR record trick for your reverse records, Webmin will not =
automatically update them..
- Jamie
On 9/Dec/2006 18:07 Grant Peel wrote ..=20
Thanks for the reply Jamie.
I was reading in your book about reverse DNS updating not being =
available to non class C blocks. Is this still true?
My ISP does delegate me blocks, usually 126 at a time. when I add a =
forward zone, should my arpa zones be able to be updated?
-Grant
----- Original Message -----=20
From: Jamie Cameron=20
To: Grant Peel ; Webmin users list=20
Sent: Saturday, December 09, 2006 6:46 PM
Subject: Re: [webmin-l] Cluster DNS
Hi Grant,
You need to click the Apply Changes button at the bottom of the =
main page in the BIND module after adding zone. In a cluster setup, this =
will restart both the master and slave servers, and so should trigger =
the transfer of both forward and reverse zones..
- Jamie
On 9/Dec/2006 06:25 Grant Peel wrote ..=20
Hi (again) all,
I *think* I have a grip on what is, and is not happening here. =
ANyt helpo would be aprreciated.
When adding a new zone on the master server, through webmin,
Q: The (FORWARD) zone is added and configured, and the =
named.conf change IS sent to the slave, but, the zone is not being made =
active on the slave. Is this normal?
If not any ideas how to fix?
The reverse zone is not being updated at all on the master =
or slave. (yes, the update reverse is ON by default).
Q: Any ideas how to fix?
When deleting a zone:
The (forward) zone does get deleted from the master and the =
slave.
The reverse does get removed from the master, and the serial =
number is inc'd. The reverse is not done right away on the slave, but I =
suspect the refresh will update it in an hour.
If I add or delete a reverse record and click the apply button, =
it DOES apply to both the Master and Slave.
-Grant
----- Original Message -----=20
From: Grant Peel=20
To: Webmin users list=20
Sent: Saturday, December 09, 2006 8:48 AM
Subject: Re: [webmin-l] Cluster DNS
Hi all,
Not suprisingly, I found that my slave IS indeed being =
updated, howerver, my reverse zones don't appear to be.....stay tuned.
-Grant
----- Original Message -----=20
From: Grant Peel=20
To: Webmin List=20
Sent: Saturday, December 09, 2006 8:03 AM
Subject: [webmin-l] Cluster DNS
Hi all,
I have spent a lot of time getting the Bind8 DNS modules to =
work (cluster) on my master and slave server.
THe only question (I think!) that I have now is:
When I add/update/delete a zone on the master server, how to =
configure the master to tell the slave to reconfig or reload the zone?
(The slave named.conf is being updated, but the changes are =
not being made active automaticaly).
-Grant
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