Despliegue de Clúster Kubernetes (GKE) en Google Cloud con Terraform y Antigravity AI

Matriz de Decisión Arquitectónica para Cómputo en GCP

Elegir el servicio de cómputo adecuado define la resiliencia operativa, la sobrecarga de mantenimiento y la eficiencia de costes (FinOps) de tu plataforma empresarial:

Implementación Práctica en Terraform (HCL)

A continuación se detalla la estructura declarativa generada para orquestar la VPC, la subred y el clúster GKE con su node pool administrado:

# variables.tf
variable "billing_account_id" {
  description = "ID de la cuenta de facturacion de Google Cloud"
  type        = string
}

variable "project_name" {
  description = "Nombre identificador del proyecto"
  type        = string
  default     = "gke-dev-env"
}

variable "region" {
  description = "Region principal de despliegue"
  type        = string
  default     = "europe-west1"
}

variable "zone" {
  description = "Zona dentro de la region"
  type        = string
  default     = "europe-west1-b"
}

# main.tf
terraform {
  required_version = ">= 1.5.0"
  required_providers {
    google = {
      source  = "hashicorp/google"
      version = "~> 5.0"
    }
    random = {
      source  = "hashicorp/random"
      version = "~> 3.5"
    }
  }
}

resource "random_id" "project_suffix" {
  byte_length = 4
}

resource "google_project" "gke_project" {
  name            = var.project_name
  project_id      = "${var.project_name}-${random_id.project_suffix.hex}"
  billing_account = var.billing_account_id
}

resource "google_project_service" "enabled_apis" {
  for_each = toset([
    "compute.googleapis.com",
    "container.googleapis.com"
  ])
  project = google_project.gke_project.project_id
  service = each.key

  disable_on_destroy = false
}

resource "google_compute_network" "custom_vpc" {
  name                    = "gke-custom-vpc"
  project                 = google_project.gke_project.project_id
  auto_create_subnetworks = false
  depends_on              = [google_project_service.enabled_apis]
}

resource "google_compute_subnetwork" "gke_subnet" {
  name          = "gke-subnet-01"
  project       = google_project.gke_project.project_id
  region        = var.region
  network       = google_compute_network.custom_vpc.id
  ip_cidr_range = "10.10.0.0/24"
}

resource "google_container_cluster" "primary" {
  name               = "gke-dev-cluster"
  project            = google_project.gke_project.project_id
  location           = var.zone
  network            = google_compute_network.custom_vpc.name
  subnetwork         = google_compute_subnetwork.gke_subnet.name
  
  # Desactivamos el pool por defecto para gestionar un node pool independiente
  remove_default_node_pool = true
  initial_node_count       = 1
  deletion_protection      = false

  depends_on = [google_project_service.enabled_apis]
}

resource "google_container_node_pool" "primary_nodes" {
  name       = "primary-node-pool"
  project    = google_project.gke_project.project_id
  location   = var.zone
  cluster    = google_container_cluster.primary.name
  node_count = 1

  node_config {
    machine_type = "e2-small"
    disk_size_gb = 30
    oauth_scopes = [
      "https://www.googleapis.com/auth/cloud-platform"
    ]
    labels = {
      environment = "development"
    }
  }
}