Re: DNS Records - changing programmatically?
It's a great idea, but unfortunately when DNS records are changed it takes
24-72 hours for the change to take affect through all the root name servers.
The best bet that I can think of is run two nameservers (with linux boxes) -
one on each line and if one can't be found the DNS records will
automatically check the other nameserver. This will give you comlpete
control of the nameserver as you have it in-house and you can do basically
whatever you want. I don't know a whole lot about the subject but I
currently run a Linux box with DNS and it's really quite easy to setup and
learnt alot from the great Linux HOWTOs that are on www.linuxdoc.org
(firewall/proxy, DNS, Domain, etc.etc.etc.)
Leonard Leblanc
----- Original Message -----
From: "Erik Reuter" <ereuter@erikreuter.com>
To: <debian-user@lists.debian.org>
Sent: Sunday, February 11, 2001 5:31 PM
Subject: DNS Records - changing programmatically?
> I'm trying to find an easy way to programmatically change a few DNS
> records. Specifically, I want to be able to change the IP number that is
> pointed to by my domain name with a program that is run from a cron job.
> I'd like some suggestions about the best and easiest way to do this.
>
> Here's the situation: I have two DSL lines (and two DSL gateways) in
> my home, and sometimes one or the other of the DSL lines will go down
> for an indefinite period of time. Right now, when this happens to
> the line that I am using, and when I am at home, I switch my network
> settings (/etc/network/interfaces, /etc/hosts) over to use the other DSL
> line. Then I log onto my account at www.centralinfo.net and use the web
> interface to change the IP number for erikreuter.com to the other DSL
> line.
>
> But I can only do this if I am home, and then only if I happen to notice
> that the line is down. I suppose I could set up so that I could do this
> remotely by telnet'ing in on the other DSL line, but what I really want
> to do is to automate the whole process.
>
> I can easily write a shell script to ping a DNS server or some other
> always up site to see if the network is up, and if not, to switch
> the network settings to the other line. However, I don't know how to
> automatically change my DNS records. Theoretically, I could write a
> http(s) program to access the web interface to centralinfo.net and
> to change the records, but I do not have the knowledge/time to do
> that. Besides, it seems like it would be reinventing the wheel.
>
> So, can any DNS experts give me some suggestions? I am willing to switch
> to a non-free DNS provider if the cost isn't too great and if that would
> make my task easier. The best thing would be for someone to send me
> a program or shell script that I can modify and the name of the DNS
> provider they use the script with. But all advice is welcome. What do
> you think?
>
>
>
> --
> "Erik Reuter" <ereuter@erikreuter.net> http://www.erikreuter.com/
>
>
> --
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