Use Ansible instead of Bash for provisioning

The deployment is not quite working, and I'm unable to test right now:
DigitalOcean is returning 503 for my requests.

As of this commit, I can run =ansible-playbook provider.yml= more than once and
it will actually be idempotent.

Notes:
- SSH fingerprint are now taken from the public key file instead of manually
supplying it in the terraform template using the =digitalocean_ssh_key=
resource;
- use Ansible instead of ad-hoc Bash scripts for provisioning the Droplets
created by Terraform;
- use the =filename.env.extension= to create the concrete files in CI;
- use the =user_data= to add the know SSH key pair to the newly created Droplet;
- add =rotate-ssh-keys.sh= utils;

1 files changed, 11 insertions, 5 deletions

diff --git a/vps.tf b/vps.tf
index 27bc8c8..34d186b 100644
--- a/vps.tf
+++ b/vps.tf
@@ -1,5 +1,4 @@
 variable "do_token" {}
-variable "ssh_fingerprint" {}
 variable "floating_ip" {}
 
 provider "digitalocean" {
@@ -7,6 +6,11 @@ provider "digitalocean" {
   version = "~> 1.1"
 }
 
+resource "digitalocean_ssh_key" "client" {
+  name       = "terraform-vps-client"
+  public_key = "${file("${path.module}/secrets/ssh/vps-box-client.pub")}"
+}
+
 resource "digitalocean_droplet" "vps" {
   image      = "ubuntu-18-04-x64"
   name       = "sovereignty"
@@ -16,23 +20,25 @@ resource "digitalocean_droplet" "vps" {
   ipv6       = true
   monitoring = true
 
+  user_data = "${file("${path.module}/user-data.sh")}"
+
   ssh_keys = [
-    "${var.ssh_fingerprint}",
+    "${digitalocean_ssh_key.client.fingerprint}",
   ]
 
   connection {
     user        = "root"
     type        = "ssh"
-    private_key = "${file("${path.module}/secrets/vps_box")}"
+    private_key = "${file("${path.module}/secrets/ssh/vps-box-client")}"
     timeout     = "2m"
   }
 
   provisioner "remote-exec" {
-    script = "./deploy.sh"
+    inline = ["echo 'SSH is up! Noop remote-exec is done.'"]
   }
 }
 
 resource "digitalocean_floating_ip_assignment" "vps" {
   ip_address = "${var.floating_ip}"
   droplet_id = "${digitalocean_droplet.vps.id}"
-}
+}
\ No newline at end of file