Merge pull request #278 from paulpalamarchuk/add_skip_provisioners_variable_to_skip_local-exec

Added variable `skip_provisioners` to skip 'local-exec'

Author: aaron-lane

README.md

@@ -170,6 +170,7 @@ In either case, upgrading to module version `v1.0.0` will trigger a recreation o
 | registry\_project\_id | Project holding the Google Container Registry. If empty, we use the cluster project. If grant_registry_access is true, storage.objectViewer role is assigned on this project. | string | `""` | no |
 | remove\_default\_node\_pool | Remove default node pool while setting up the cluster | bool | `"false"` | no |
 | service\_account | The service account to run nodes as if not overridden in `node_pools`. The create_service_account variable default value (true) will cause a cluster-specific service account to be created. | string | `""` | no |
+| skip\_provisioners | Flag to skip all local-exec provisioners. It breaks `stub_domains` and `upstream_nameservers` variables functionality. | bool | `"false"` | no |
 | stub\_domains | Map of stub domains and their resolvers to forward DNS queries for a certain domain to an external DNS server | map(list(string)) | `<map>` | no |
 | subnetwork | The subnetwork to host the cluster in (required) | string | n/a | yes |
 | upstream\_nameservers | If specified, the values replace the nameservers taken by default from the node’s /etc/resolv.conf | list | `<list>` | no |

autogen/README.md

@@ -139,7 +139,6 @@ Version 1.0.0 of this module introduces a breaking change: adding the `disable-l
 In either case, upgrading to module version `v1.0.0` will trigger a recreation of all node pools in the cluster.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
-
 <!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
 
 ## Requirements

autogen/cluster.tf

@@ -425,6 +425,7 @@ resource "google_container_node_pool" "pools" {
 }
 
 resource "null_resource" "wait_for_cluster" {
+  count = var.skip_provisioners ? 0 : 1
 
   provisioner "local-exec" {
     command = "${path.module}/scripts/wait-for-cluster.sh ${var.project_id} ${var.name}"

autogen/dns.tf

@@ -20,7 +20,7 @@
   Delete default kube-dns configmap
  *****************************************/
 resource "null_resource" "delete_default_kube_dns_configmap" {
-  count = local.custom_kube_dns_config || local.upstream_nameservers_config ? 1 : 0
+  count = (local.custom_kube_dns_config || local.upstream_nameservers_config) && ! var.skip_provisioners ? 1 : 0
 
   provisioner "local-exec" {
     command = "${path.module}/scripts/kubectl_wrapper.sh https://${local.cluster_endpoint} ${data.google_client_config.default.access_token} ${local.cluster_ca_certificate} ${path.module}/scripts/delete-default-resource.sh kube-system configmap kube-dns"

autogen/variables.tf

@@ -311,6 +311,11 @@ variable "cluster_resource_labels" {
   default     = {}
 }
 
+variable "skip_provisioners" {
+  type        = bool
+  description = "Flag to skip all local-exec provisioners. It breaks `stub_domains` and `upstream_nameservers` variables functionality."
+  default     = false
+}
 {% if private_cluster %}
 
 variable "deploy_using_private_endpoint" {

cluster.tf

@@ -219,6 +219,7 @@ resource "google_container_node_pool" "pools" {
 }
 
 resource "null_resource" "wait_for_cluster" {
+  count = var.skip_provisioners ? 0 : 1
 
   provisioner "local-exec" {
     command = "${path.module}/scripts/wait-for-cluster.sh ${var.project_id} ${var.name}"

dns.tf

@@ -20,7 +20,7 @@
   Delete default kube-dns configmap
  *****************************************/
 resource "null_resource" "delete_default_kube_dns_configmap" {
-  count = local.custom_kube_dns_config || local.upstream_nameservers_config ? 1 : 0
+  count = (local.custom_kube_dns_config || local.upstream_nameservers_config) && ! var.skip_provisioners ? 1 : 0
 
   provisioner "local-exec" {
     command = "${path.module}/scripts/kubectl_wrapper.sh https://${local.cluster_endpoint} ${data.google_client_config.default.access_token} ${local.cluster_ca_certificate} ${path.module}/scripts/delete-default-resource.sh kube-system configmap kube-dns"

examples/simple_regional/README.md

@@ -14,6 +14,7 @@ This example illustrates how to create a simple cluster.
 | network | The VPC network to host the cluster in | string | n/a | yes |
 | project\_id | The project ID to host the cluster in | string | n/a | yes |
 | region | The region to host the cluster in | string | n/a | yes |
+| skip\_provisioners | Flag to skip local-exec provisioners | bool | `"false"` | no |
 | subnetwork | The subnetwork to host the cluster in | string | n/a | yes |
 
 ## Outputs

examples/simple_regional/main.tf

@@ -35,6 +35,7 @@ module "gke" {
   ip_range_services      = var.ip_range_services
   create_service_account = false
   service_account        = var.compute_engine_service_account
+  skip_provisioners      = var.skip_provisioners
 }
 
 data "google_client_config" "default" {

examples/simple_regional/variables.tf

@@ -47,3 +47,8 @@ variable "compute_engine_service_account" {
   description = "Service account to associate to the nodes in the cluster"
 }
 
+variable "skip_provisioners" {
+  type        = bool
+  description = "Flag to skip local-exec provisioners"
+  default     = false
+}