DigitalOcean + CoreOS with Terraform

boom!

$ ssh [email protected]
Warning: Permanently added '45.55.11.xxx' (ED25519) to the list of known hosts.
CoreOS stable (717.3.0)
core@rethink-cluster-sfo1 ~ $ 

cloud-config.yml

#cloud-config

ssh_authorized_keys:
  - ssh-ed25519 AAAA..... user@host

coreos:
  update:
    reboot-strategy: off
  etcd:
    #addr: 10.9.8.112:4001
    #peer-addr: 10.9.8.112:7001
  units:
    - name: etcd.service
      command: start
    - name: fleet.service
      command: start

cluster.tf

resource "digitalocean_droplet" "my-cluster" {
  count = "2"
  name = "my-cluster-sfo1"
  size = "512mb"
  image = "coreos-stable"
  region = "sfo1"
  private_networking = true
  ssh_keys = ["xx:xx:xx:xx:xx...."]
  user_data = "${file("cloud-config.yml")}"
}

output

$ terraform apply
digitalocean_droplet.rethink-cluster.0: Creating...
  image:                "" => "coreos-stable"
  ipv4_address:         "" => "<computed>"
digitalocean_droplet.rethink-cluster.1: Creating...
  image:                "" => "coreos-stable"
digitalocean_droplet.rethink-cluster.1: Creation complete
digitalocean_droplet.rethink-cluster.0: Creation complete

Apply complete! Resources: 2 added, 0 changed, 0 destroyed.