fix service account create (#923)
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Ludovico Magnocavallo
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@@ -99,13 +99,15 @@ module "cluster" {
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}
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module "cluster_nodepool" {
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source = "../../../modules/gke-nodepool"
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project_id = module.project.project_id
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cluster_name = module.cluster.name
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location = var.zone
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name = "nodepool"
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service_account = {}
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node_count = { initial = 3 }
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source = "../../../modules/gke-nodepool"
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project_id = module.project.project_id
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cluster_name = module.cluster.name
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location = var.zone
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name = "nodepool"
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service_account = {
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create = true
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}
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node_count = { initial = 3 }
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}
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module "kms" {
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@@ -44,15 +44,17 @@ module "clusters" {
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}
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module "cluster_nodepools" {
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for_each = var.clusters_config
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source = "../../../modules/gke-nodepool"
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project_id = module.fleet_project.project_id
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cluster_name = module.clusters[each.key].name
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location = var.region
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name = "nodepool-${each.key}"
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node_count = { initial = 1 }
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service_account = {}
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tags = ["${each.key}-node"]
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for_each = var.clusters_config
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source = "../../../modules/gke-nodepool"
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project_id = module.fleet_project.project_id
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cluster_name = module.clusters[each.key].name
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location = var.region
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name = "nodepool-${each.key}"
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node_count = { initial = 1 }
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service_account = {
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create = true
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}
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tags = ["${each.key}-node"]
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}
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module "hub" {
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@@ -219,11 +219,13 @@ module "cluster-1" {
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}
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module "cluster-1-nodepool-1" {
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source = "../../../modules/gke-nodepool"
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count = var.cluster_create ? 1 : 0
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name = "nodepool-1"
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project_id = module.project-svc-gke.project_id
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location = module.cluster-1.0.location
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cluster_name = module.cluster-1.0.name
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service_account = {}
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source = "../../../modules/gke-nodepool"
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count = var.cluster_create ? 1 : 0
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name = "nodepool-1"
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project_id = module.project-svc-gke.project_id
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location = module.cluster-1.0.location
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cluster_name = module.cluster-1.0.name
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service_account = {
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create = true
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}
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}
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@@ -257,7 +257,7 @@ module "cluster_1_nodepool" {
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location = "europe-west1"
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name = "nodepool"
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node_count = { initial = 1 }
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service_account = {}
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service_account = { create = true }
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tags = ["cluster-1-node"]
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}
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@@ -292,7 +292,7 @@ module "cluster_2_nodepool" {
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location = "europe-west4"
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name = "nodepool"
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node_count = { initial = 1 }
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service_account = {}
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service_account = { create = true }
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tags = ["cluster-2-node"]
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}
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@@ -21,7 +21,13 @@ module "cluster-1-nodepool-1" {
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### Internally managed service account
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To have the module auto-create a service account for the nodes, define the `service_account` variable without setting its `email` attribute. You can then specify service account scopes, or use the default. The service account resource and email (in both plain and IAM formats) are then available in outputs to assign IAM roles from your own code.
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There are three different approaches to defining the nodes service account, all depending on the `service_account` variable where the `create` attribute controls creation of a new service account by this module, and the `email` attribute controls the actual service account to use.
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If you create a new service account, its resource and email (in both plain and IAM formats) are then available in outputs to reference it in other modules or resources.
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#### GCE default service account
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To use the GCE default service account, you can ignore the variable which is equivalent to `{ create = null, email = null }`.
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```hcl
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module "cluster-1-nodepool-1" {
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@@ -30,7 +36,44 @@ module "cluster-1-nodepool-1" {
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cluster_name = "cluster-1"
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location = "europe-west1-b"
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name = "nodepool-1"
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service_account = {}
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}
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# tftest modules=1 resources=1
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```
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#### Externally defined service account
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To use an existing service account, pass in just the `email` attribute.
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```hcl
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module "cluster-1-nodepool-1" {
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source = "./fabric/modules/gke-nodepool"
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project_id = "myproject"
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cluster_name = "cluster-1"
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location = "europe-west1-b"
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name = "nodepool-1"
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service_account = {
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email = "foo-bar@myproject.iam.gserviceaccount.com"
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}
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}
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# tftest modules=1 resources=1
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```
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#### Auto-created service account
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To have the module create a service account, set the `create` attribute to `true` and optionally pass the desired account id in `email`.
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```hcl
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module "cluster-1-nodepool-1" {
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source = "./fabric/modules/gke-nodepool"
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project_id = "myproject"
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cluster_name = "cluster-1"
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location = "europe-west1-b"
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name = "nodepool-1"
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service_account = {
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create = true
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# optional
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email = "spam-eggs"
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}
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}
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# tftest modules=1 resources=2
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```
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@@ -53,10 +96,10 @@ module "cluster-1-nodepool-1" {
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| [nodepool_config](variables.tf#L109) | Nodepool-level configuration. | <code title="object({ autoscaling = optional(object({ location_policy = optional(string) max_node_count = optional(number) min_node_count = optional(number) use_total_nodes = optional(bool, false) })) management = optional(object({ auto_repair = optional(bool) auto_upgrade = optional(bool) })) upgrade_settings = optional(object({ max_surge = number max_unavailable = number })) })">object({…})</code> | | <code>null</code> |
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| [pod_range](variables.tf#L131) | Pod secondary range configuration. | <code title="object({ secondary_pod_range = object({ cidr = optional(string) create = optional(bool) name = string }) })">object({…})</code> | | <code>null</code> |
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| [reservation_affinity](variables.tf#L148) | Configuration of the desired reservation which instances could take capacity from. | <code title="object({ consume_reservation_type = string key = optional(string) values = optional(list(string)) })">object({…})</code> | | <code>null</code> |
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| [service_account](variables.tf#L158) | Nodepool service account. If this variable is set to null, the default GCE service account will be used. If set and email is null, a service account will be created. If scopes are null a default will be used. | <code title="object({ email = optional(string) oauth_scopes = optional(list(string)) })">object({…})</code> | | <code>null</code> |
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| [sole_tenant_nodegroup](variables.tf#L167) | Sole tenant node group. | <code>string</code> | | <code>null</code> |
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| [tags](variables.tf#L173) | Network tags applied to nodes. | <code>list(string)</code> | | <code>null</code> |
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| [taints](variables.tf#L179) | Kubernetes taints applied to all nodes. | <code title="list(object({ key = string value = string effect = string }))">list(object({…}))</code> | | <code>null</code> |
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| [service_account](variables.tf#L158) | Nodepool service account. If this variable is set to null, the default GCE service account will be used. If set and email is null, a service account will be created. If scopes are null a default will be used. | <code title="object({ create = optional(bool, false) email = optional(string, null) oauth_scopes = optional(list(string), null) })">object({…})</code> | | <code>{}</code> |
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| [sole_tenant_nodegroup](variables.tf#L169) | Sole tenant node group. | <code>string</code> | | <code>null</code> |
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| [tags](variables.tf#L175) | Network tags applied to nodes. | <code>list(string)</code> | | <code>null</code> |
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| [taints](variables.tf#L181) | Kubernetes taints applied to all nodes. | <code title="list(object({ key = string value = string effect = string }))">list(object({…}))</code> | | <code>null</code> |
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## Outputs
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@@ -31,17 +31,14 @@ locals {
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)
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# if no attributes passed for service account, use the GCE default
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# if no email specified, create service account
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service_account_create = (
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var.service_account != null && try(var.service_account.email, null) == null
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)
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service_account_email = (
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local.service_account_create
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var.service_account.create
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? google_service_account.service_account[0].email
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: try(var.service_account.email, null)
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: var.service_account.email
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)
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service_account_scopes = (
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try(var.service_account.scopes, null) != null
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? var.service_account.scopes
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var.service_account.oauth_scopes != null
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? var.service_account.oauth_scopes
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: [
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"https://www.googleapis.com/auth/devstorage.read_only",
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"https://www.googleapis.com/auth/logging.write",
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@@ -60,9 +57,13 @@ locals {
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}
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resource "google_service_account" "service_account" {
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count = local.service_account_create ? 1 : 0
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project = var.project_id
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account_id = "tf-gke-${var.name}"
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count = var.service_account.create ? 1 : 0
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project = var.project_id
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account_id = (
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var.service_account.email != null
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? split("@", var.service_account.email)[0]
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: "tf-gke-${var.name}"
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)
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display_name = "Terraform GKE ${var.cluster_name} ${var.name}."
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}
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@@ -158,10 +158,12 @@ variable "reservation_affinity" {
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variable "service_account" {
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description = "Nodepool service account. If this variable is set to null, the default GCE service account will be used. If set and email is null, a service account will be created. If scopes are null a default will be used."
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type = object({
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email = optional(string)
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oauth_scopes = optional(list(string))
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create = optional(bool, false)
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email = optional(string, null)
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oauth_scopes = optional(list(string), null)
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})
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default = null
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default = {}
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nullable = false
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}
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variable "sole_tenant_nodegroup" {
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@@ -14,22 +14,31 @@
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* limitations under the License.
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*/
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resource "google_service_account" "test" {
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project = "my-project"
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account_id = "gke-nodepool-test"
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display_name = "Test Service Account"
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}
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module "test" {
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source = "../../../../modules/gke-nodepool"
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project_id = "my-project"
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cluster_name = "cluster-1"
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location = "europe-west1-b"
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name = "nodepool-1"
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gke_version = var.gke_version
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labels = var.labels
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max_pods_per_node = var.max_pods_per_node
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node_config = var.node_config
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node_count = var.node_count
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node_locations = var.node_locations
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nodepool_config = var.nodepool_config
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pod_range = var.pod_range
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reservation_affinity = var.reservation_affinity
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service_account = var.service_account
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source = "../../../../modules/gke-nodepool"
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project_id = "my-project"
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cluster_name = "cluster-1"
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location = "europe-west1-b"
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name = "nodepool-1"
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gke_version = var.gke_version
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labels = var.labels
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max_pods_per_node = var.max_pods_per_node
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node_config = var.node_config
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node_count = var.node_count
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node_locations = var.node_locations
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nodepool_config = var.nodepool_config
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pod_range = var.pod_range
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reservation_affinity = var.reservation_affinity
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service_account = {
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create = var.service_account_create
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email = google_service_account.test.email
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}
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sole_tenant_nodegroup = var.sole_tenant_nodegroup
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tags = var.tags
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taints = var.taints
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@@ -65,9 +65,9 @@ variable "reservation_affinity" {
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default = null
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}
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variable "service_account" {
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type = any
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default = null
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variable "service_account_create" {
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type = bool
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default = false
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}
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variable "sole_tenant_nodegroup" {
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@@ -21,9 +21,9 @@ def test_defaults(plan_runner):
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def test_service_account(plan_runner):
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_, resources = plan_runner(service_account='{email="foo@example.org"}')
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_, resources = plan_runner()
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assert len(resources) == 1
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_, resources = plan_runner(service_account='{}')
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_, resources = plan_runner(service_account_create='true')
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assert len(resources) == 2
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assert 'google_service_account' in [r['type'] for r in resources]
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