Upgraded demo to use TF 0.12

Jenkinsfile

@@ -35,7 +35,7 @@ metadata:
 spec:
   containers:
   - name: ${containerName}
-    image: gcr.io/pso-helmsman-cicd/jenkins-k8s-node:${env.CONTAINER_VERSION}
+    image: gcr.io/pso-helmsman-cicd/jenkins-k8s-node:jenkins-cicd_images_builder-185
     command: ['cat']
     tty: true
     volumeMounts:

terraform/main.tf

@@ -14,12 +14,11 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-
 // Provides access to available Google Container Engine versions in a zone for a given project.
 // https://www.terraform.io/docs/providers/google/d/google_container_engine_versions.html
 data "google_container_engine_versions" "on-prem" {
-  zone    = "${var.zone}"
-  project = "${var.project}"
+  zone    = var.zone
+  project = var.project
 }
 
 // https://www.terraform.io/docs/providers/google/d/google_container_cluster.html
@@ -28,9 +27,9 @@ data "google_container_engine_versions" "on-prem" {
 // Create the GKE Cluster
 resource "google_container_cluster" "primary" {
   name               = "tracing-demo-space"
-  zone               = "${var.zone}"
+  zone               = var.zone
   initial_node_count = 1
-  min_master_version = "${data.google_container_engine_versions.on-prem.latest_master_version}"
+  min_master_version = data.google_container_engine_versions.on-prem.latest_master_version
 
   // Scopes were a pre-IAM method of giving instances API access
   // They are still around we need to give our cluster nodes
@@ -46,6 +45,8 @@ resource "google_container_cluster" "primary" {
     ]
   }
 
+  // Here we use gcloud to gather authentication information about our new cluster and write that
+  // information to kubectls config file
   // Here we use gcloud to gather authentication information about our new cluster and write that
   // information to kubectls config file
   provisioner "local-exec" {
@@ -62,13 +63,14 @@ resource "google_pubsub_topic" "tracing-demo-topic" {
 // You need a subscription to pull messages from a topic
 resource "google_pubsub_subscription" "tracing-demo-subscription" {
   name  = "tracing-demo-cli"
-  topic = "${google_pubsub_topic.tracing-demo-topic.name}"
+  topic = google_pubsub_topic.tracing-demo-topic.name
 }
 
 output "cluster_name" {
-  value = "${google_container_cluster.primary.name}"
+  value = google_container_cluster.primary.name
 }
 
 output "primary_zone" {
-  value = "${google_container_cluster.primary.zone}"
+  value = google_container_cluster.primary.zone
 }
+

terraform/provider.tf

@@ -14,9 +14,9 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-
 // Identifies allowable version range for Terraform Google Provider
 provider "google" {
-  project = "${var.project}"
-  version = "~> 1.13"
+  project = var.project
+  version = "~> 2.5"
 }
+

terraform/variables.tf

@@ -14,13 +14,13 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-
 variable "zone" {
   description = "The zone in which to create the Kubernetes cluster. Must match the region"
-  type        = "string"
+  type        = string
 }
 
 variable "project" {
   description = "the project for this network"
-  type        = "string"
+  type        = string
 }
+

terraform/versions.tf

@@ -0,0 +1,4 @@
+
+terraform {
+  required_version = ">= 0.12"
+}