Terraform or OpenTofu

Example how to configure a simple network in Google via Terraform/OpenTofu

Creating a Network

main.tf

terraform { } provider "google" {

 project = "linux-lv-test"
 region  = "europe-west1"
 zone    = "europe-west1-d"

}

network.tf

resource "google_compute_network" "lv_vpc" {

 project                 = "linux-lv-test"
 name                    = "linux-lv-vpc"
 auto_create_subnetworks = false
 mtu                     = 1460

}

resource "google_compute_subnetwork" "lv_vpc_west1" {

 name          = "mywest1"
 ip_cidr_range = "10.20.0.0/16"
 region        = "europe-west1"
 network       = google_compute_network.lv_vpc.id
 secondary_ip_range {
   range_name    = "lv-secondary-range"
   ip_cidr_range = "10.120.0.0/24"
 }

}

resource "google_compute_firewall" "lvfw" {

 name    = "lv-fw"
 network = google_compute_network.lv_vpc.id
 allow {
   protocol = "icmp"
 }
 allow {
   protocol = "tcp"
   ports    = ["22", "80", "443","10000-20000"]
 }
 #source_tags = ["linux-lv"]
 source_ranges = ["0.0.0.0/0"]

}

resource "google_compute_router" "lvrouter" {

 name    = "lv-router"
 region  = google_compute_subnetwork.lv_vpc_west1.region
 network = google_compute_network.lv_vpc.id

}

resource "google_compute_router_nat" "lvnat" {

 name   = "lv-router-nat"
 router = google_compute_router.lvrouter.name
 region = google_compute_router.lvrouter.region
 nat_ip_allocate_option = "AUTO_ONLY"
 source_subnetwork_ip_ranges_to_nat = "ALL_SUBNETWORKS_ALL_IP_RANGES"

}