helixdns

HelixDNS

A simple dns server to read records from etcd. See this blog post for more information.

Build Instructions

go get github.com/mrwilson/helixdns
make install

Uses

hdns
  -port=<port-to-run-on>
  -etcd-address=<address-of-etcd-instance>
  -forward=<address-of-forwarding-nameserver>

SRV Records

SRV records have multiple pieces of information to serve, so the values stored in etcd under /helix/com/example/_<protocol>/_<service>/SRV should be in the form of a list of JSON objects, as below.

[
  {"Priority":10,"Weight":60,"Port":5060,"Target":"bigbox.example.com."},
  {"Priority":10,"Weight":20,"Port":5060,"Target":"smallbox1.example.com."},
  {"Priority":10,"Weight":10,"Port":5060,"Target":"smallbox2.example.com."},
  {"Priority":10,"Weight":10,"Port":5066,"Target":"smallbox2.example.com."},
  {"Priority":20,"Weight":0, "Port":5060,"Target":"backupbox.example.com."}
]

TODO

• Other types of record that aren't A, AAAA, CNAME, PTR, or SRV.