Testing on Miek Gieben

CoreDNS Dogfood

Fri, 08 Apr 2016 19:31:02 +0100

Reading this means CoreDNS has done its job!

…And CoreDNS is live:

% dig @linode.atoom.net TXT CH version.bind +short
"CoreDNS"

This is quite nice, because it allows me test it properly with 3rd party tools, like zonemaster. That turned up one issue with EDNS which needs fixing. It would also be nice to have an automatic update and reloading of zones (after a signal).

The EDNS stuff will be fixed real soon (TM). The other stuff is less important. I will now also focus on performance, testing and fixing issue with the current set of middleware. (Although super awesome middleware is welcome!)

Running CoreDNS

Sun, 03 Apr 2016 09:44:34 +0100

CoreDNS is now running on linode.atoom.net on port 1053 (yes not yet on 53..). It should implement most protocol features and allows for AXFR (to everyone) and is able to act as a secondary. Not bad after ~2 weeks of programming. ;-)

Recipe for writing a DNS server in 2 weeks:

Study the DNS for 15+ years.
Start an easy to use DNS library 5 years ago.
Write DNS server in ~2 weeks.

The current version of CoreDNS works, but isn’t fully standards compliant (in a few corner cases, mostly DNSSEC related). It is also optimistic about operational errors, i.e. it assumes everything will work as expected.