coredns-deployment/docker/README.md

docker based deployment

Prerequisites

• Docker 1.12.x or later (Docker Swarm Mode)

Setup

First decide which nodes you are going to run coredns on and set appropriate labels on your nodes. I use iface=extern as labels on nodes with external facing interfaces and iface=intern for internal facing nodes.

$ docker node inspect node1 | jq '.[0].Spec.Labels'
{
  "iface": "extern"
}

Deploy

Connect to a "manager" node: (I use docker-machine for this)

$ eval $(docker-machine env node1)
$ docker stack deploy -c dns.yml dns

Verify

Verify your setup works:

$ dig @<node1> google.com IN A +short