Add termination_time* support for spot instances

Author: bzub

hosts.tf

@@ -33,4 +33,8 @@ locals {
                                 concat(null_resource.controller.*.triggers.hostname_prefix,
                                        null_resource.worker.*.triggers.hostname_prefix),
                                 local.hostnames)}"
+  termination_timestamps = "${compact(concat(packet_device.controller.*.termination_timestamp,
+                                      packet_device.worker.*.termination_timestamp))}"
+  termination_time_remainings = "${compact(concat(packet_device.controller.*.termination_time_remaining,
+                                      packet_device.worker.*.termination_time_remaining))}"
 }

nodes.tf

@@ -17,7 +17,7 @@ resource "packet_device" "controller" {
   always_pxe       = "${var.always_pxe}"
   spot_instance    = "${var.spot_instance}"
   spot_price_max   = "${var.spot_price_max}"
-  /* termination_time = "${var.termination_time}" */
+  termination_time = "${var.termination_time}"
 }
 
 resource "packet_device" "worker" {
@@ -35,7 +35,7 @@ resource "packet_device" "worker" {
   always_pxe       = "${var.always_pxe}"
   spot_instance    = "${var.spot_instance}"
   spot_price_max   = "${var.spot_price_max}"
-  /* termination_time = "${var.termination_time}" */
+  termination_time = "${var.termination_time}"
 }
 
 resource "packet_ssh_key" "ssh" {

outputs.tf

@@ -25,3 +25,11 @@ output "kube_version_patch" {
 output "hosts_file_entries" {
   value = "${join("\n",local.hosts_entries)}"
 }
+
+output "termination_timestamp" {
+  value = "${local.termination_timestamps}"
+}
+
+output "termination_time_remaining" {
+  value = "${local.termination_time_remainings}"
+}

variables.tf

@@ -14,20 +14,19 @@ variable "project_id" {
 variable "spot_instance" {
   description = "Set to true to create a spot instance. See: https://help.packet.net/technical/deployment-options/spot-market"
   type        = "string"
-  default     = "false"
 }
 
 variable "spot_price_max" {
   description = "The bid price for your spot_instance."
   type        = "string"
+}
+
+variable "termination_time" {
+  description = "A predetermined time to delete your spot_instance. Takes RFC3339 (e.g. \"2018-09-21T19:20:01-05:00\") or duration (e.g. \"6h20m\") formats."
+  type        = "string"
   default     = ""
 }
 
-# variable "termination_time" {
-#   description = "A predetermined time to delete your spot_instance."
-#   type        = "string"
-#   default     = ""
-# }
 
 ## Machine
 variable operating_system {
@@ -91,7 +90,7 @@ variable etcd_servers {
 }
 
 variable experimental_self_hosted_etcd {
-  default = true
+  default = false
 }
 
 ## Customize Kubernetes components/addons
@@ -108,7 +107,3 @@ variable kube_router {
     network_policy = true
   }
 }
-
-variable use_prometheus {
-  default = true
-}