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main.tf
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main.tf
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/**
* Copyright 2018 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// This file was automatically generated from a template in ./autogen
/******************************************
Get available zones in region
*****************************************/
data "google_compute_zones" "available" {
provider = google
project = var.project_id
region = local.region
}
resource "random_shuffle" "available_zones" {
input = data.google_compute_zones.available.names
result_count = 3
}
locals {
// location
location = var.regional ? var.region : var.zones[0]
region = var.region == null ? join("-", slice(split("-", var.zones[0]), 0, 2)) : var.region
// for regional cluster - use var.zones if provided, use available otherwise, for zonal cluster use var.zones with first element extracted
node_locations = var.regional ? coalescelist(compact(var.zones), sort(random_shuffle.available_zones.result)) : slice(var.zones, 1, length(var.zones))
// kuberentes version
master_version_regional = var.kubernetes_version != "latest" ? var.kubernetes_version : data.google_container_engine_versions.region.latest_master_version
master_version_zonal = var.kubernetes_version != "latest" ? var.kubernetes_version : data.google_container_engine_versions.zone.latest_master_version
node_version_regional = var.node_version != "" && var.regional ? var.node_version : local.master_version_regional
node_version_zonal = var.node_version != "" && ! var.regional ? var.node_version : local.master_version_zonal
master_version = var.regional ? local.master_version_regional : local.master_version_zonal
node_version = var.regional ? local.node_version_regional : local.node_version_zonal
custom_kube_dns_config = length(keys(var.stub_domains)) > 0
upstream_nameservers_config = length(var.upstream_nameservers) > 0
network_project_id = var.network_project_id != "" ? var.network_project_id : var.project_id
zone_count = length(var.zones)
cluster_type = var.regional ? "regional" : "zonal"
// auto upgrade by defaults only for regional cluster as long it has multiple masters versus zonal clusters have only have a single master so upgrades are more dangerous.
default_auto_upgrade = var.regional ? true : false
cluster_network_policy = var.network_policy ? [{
enabled = true
provider = var.network_policy_provider
}] : [{
enabled = false
provider = null
}]
cluster_output_name = google_container_cluster.primary.name
cluster_output_location = google_container_cluster.primary.location
cluster_output_region = google_container_cluster.primary.region
cluster_output_regional_zones = google_container_cluster.primary.node_locations
cluster_output_zonal_zones = local.zone_count > 1 ? slice(var.zones, 1, local.zone_count) : []
cluster_output_zones = local.cluster_output_regional_zones
cluster_output_endpoint = google_container_cluster.primary.endpoint
cluster_output_master_auth = concat(google_container_cluster.primary.*.master_auth, [])
cluster_output_master_version = google_container_cluster.primary.master_version
cluster_output_min_master_version = google_container_cluster.primary.min_master_version
cluster_output_logging_service = google_container_cluster.primary.logging_service
cluster_output_monitoring_service = google_container_cluster.primary.monitoring_service
cluster_output_network_policy_enabled = google_container_cluster.primary.addons_config.0.network_policy_config.0.disabled
cluster_output_http_load_balancing_enabled = google_container_cluster.primary.addons_config.0.http_load_balancing.0.disabled
cluster_output_horizontal_pod_autoscaling_enabled = google_container_cluster.primary.addons_config.0.horizontal_pod_autoscaling.0.disabled
cluster_output_kubernetes_dashboard_enabled = google_container_cluster.primary.addons_config.0.kubernetes_dashboard.0.disabled
cluster_output_node_pools_names = concat(google_container_node_pool.pools.*.name, [""])
cluster_output_node_pools_versions = concat(google_container_node_pool.pools.*.version, [""])
cluster_master_auth_list_layer1 = local.cluster_output_master_auth
cluster_master_auth_list_layer2 = local.cluster_master_auth_list_layer1[0]
cluster_master_auth_map = local.cluster_master_auth_list_layer2[0]
# cluster locals
cluster_name = local.cluster_output_name
cluster_location = local.cluster_output_location
cluster_region = local.cluster_output_region
cluster_zones = sort(local.cluster_output_zones)
cluster_endpoint = local.cluster_output_endpoint
cluster_ca_certificate = local.cluster_master_auth_map["cluster_ca_certificate"]
cluster_master_version = local.cluster_output_master_version
cluster_min_master_version = local.cluster_output_min_master_version
cluster_logging_service = local.cluster_output_logging_service
cluster_monitoring_service = local.cluster_output_monitoring_service
cluster_node_pools_names = local.cluster_output_node_pools_names
cluster_node_pools_versions = local.cluster_output_node_pools_versions
cluster_network_policy_enabled = ! local.cluster_output_network_policy_enabled
cluster_http_load_balancing_enabled = ! local.cluster_output_http_load_balancing_enabled
cluster_horizontal_pod_autoscaling_enabled = ! local.cluster_output_horizontal_pod_autoscaling_enabled
cluster_kubernetes_dashboard_enabled = ! local.cluster_output_kubernetes_dashboard_enabled
}
/******************************************
Get available container engine versions
*****************************************/
data "google_container_engine_versions" "region" {
location = local.location
project = var.project_id
}
data "google_container_engine_versions" "zone" {
// Work around to prevent a lack of zone declaration from causing regional cluster creation from erroring out due to error
//
// data.google_container_engine_versions.zone: Cannot determine zone: set in this resource, or set provider-level zone.
//
location = local.zone_count == 0 ? data.google_compute_zones.available.names[0] : var.zones[0]
project = var.project_id
}