Setting up a secondary DNS zone

[so7]

i work for a digital web agency and we have our primary DNS server setup on a Linux box.

overall we have no problems with it however from time to time it can go down which causes lots of problems.

I’ve been thinking about potentially setting up a Secondary slave DNS server on my network but using the 10.6 server box i currently have setup.

is this possible if my primary DNS server is on a linux box?

many thanks in advance!

-s

[bschappel]

Yes, this is 100% possible and almost trivially easy. I do this for our remote offices so that they have a local copy of the master zone file on their local network.

OS X runs BIND for DNS. You’re probably running BIND on your Linux box too. Just add the IP address of your OS X box to the ACL for your DNS slaves and create a secondary zone on your OS X box.

Your ACL’s are usually defined in the named.conf.local file on your master server. Here’s a sample ACL:

[code]acl dns_slaves {
10.1.1.3;
10.10.10.90;
10.10.12.9;
};
[/code]

Then in your zone declaration you add an “allow-transfer” option. A typical zone declaration would look like this:

[code]zone “mydomain.com” {
type master;
file “master/db.mydomain.com”;
allow-transfer { dns_slaves; };
};
[/code]

Use the GUI in Server Admin to create the secondary zone on your OS X server. It should work immediately.

[Author]

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