WARNING:

This project is just a proof of concept

It has been superseded by Consul (which has a dns inteface)

A program to serve DNS requests based on the Serf topology.

Description

This program uses the Serf RPC to query Serf and inspect the current names and IPs.

From this data it builds an in-memory mapping of DNS records, and responds to DNS requests.

Building

You need at least Go 1.2

Running

I wouldn't yet :(

There is no error handling, it's basically crap.

Examples

You could run this program, and then have BIND forward a particular zone to it:

zone "serf." in {
    type forward;
    ; forward to Serf_dns running on localhost!
    forwarders { 127.0.0.1 port 8053 ; };
};

Demo

Once running, you can confirm the records are in place with dig:

$ # Using a "serf" fake TLD
$ # Lets query the local serf_dns running on 8053...
$ dig +short @localhost -p 8053  server1.xkyle.com.serf.
192.168.1.67
$ # Run serf members to verify...
$ serf members
server1.xkyle.com     192.168.1.67:7946    alive
server2.xkyle.com     192.168.1.69:7946    alive
$ echo 'It Works!'
It Works!