MoinQ: DNS/tdns

DNS/tdnsについて、ここに記述してください。

1. link

https://labs.ripe.net/Members/bert_hubert/introducing-tdns-the-teachable-authoritative-dns-server

Introducing 'tdns': the Teachable Authoritative DNS Server bert hubert — 20 Apr 2018

https://github.com/ahupowerdns/hello-dns/tree/master/tdns

A warm welcome to DNS

https://powerdns.org/hello-dns/

2. basic

https://powerdns.org/hello-dns/basic.md.html

The concept of a DNS name is non-trivial and frequently misunderstood.

• ドメイン名空間を理解しなければ、DNSの話はできない。-- ToshinoriMaeno 2020-08-18 01:48:07

日本なら、JP TLD下のゾーン木を図にしてみるのがよいだろう。

• https://jprs.jp/glossary/imgs/zone.png

3. www.ietf.org AAAA RR はどこに

階層との関係

'www.ietf.org' can be defined in four different places.

It could be in the 'root' zone itself, fully written out:

www.ietf.org    IN      AAAA    3600    2400:cb00:2048:1::6814:55

Or it could be in the org zone, where it might look like this:

$origin ORG
www.ietf        IN      AAAA    3600    2400:cb00:2048:1::6814:55

Or, (as is actually the case), this name could live in the 'ietf.org' zone:

$origin ietf.org
www     IN      AAAA    3600    2400:cb00:2048:1::6814:55

And finally, it is even possible that there is a zone called 'www.ietf.org',
where the record lives like this:

$origin www.ietf.org
@       IN      AAAA    3600    2400:cb00:2048:1::6814:55

4. 権威サーバーの動作

あるいはzone cutsについて。

When an authoritative server receives a query for 'www.ietf.org', it consults which zones it knows about and answers from the most specific zone it has available.

この説明は現状の一部を記述しているに過ぎない。

5. zone

https://github.com/ahupowerdns/hello-dns/blob/master/tdns/tauth.md