Terraform

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Terraform
Terraform is a declarative way of setup your infrastructure, and may be used to deploy nanos instances with terraform-ops-provider on supported cloud providers.
Download and install terraform.
GCP
See below an explanation of the resources needed to upload a nanos image and to launch an instance to google cloud provider. You can see the entire configuration file at the end of this section. All files required to run this example is in ops terraform plugin repository.
1.Start importing the ops terraform plugin and set your google cloud settings.
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terraform {
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 required_providers {
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   ops = {
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     source = "nanovms/ops"
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   }
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 }
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}
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​
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provider "google" {
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 project = "prod-1033"
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 region  = "us-west2"
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 zone    = "us-west2-a"
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}
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​
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provider "ops" {
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​
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}
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2.Create an image in your local machine with your application binary file. You have to specify your google cloud account settings in a configuration file and set the target cloud to gcp.
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resource "ops_images" "walk_server_image" {
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 name        = "walk-server"
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 elf         = "./walk-server"
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 config      = "./config.json"
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 targetcloud = "gcp"
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}
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3.Upload the nanos image to google storage. The resources below create a bucket in google storage and upload the nanos image.
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resource "google_storage_bucket" "images_bucket" {
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 name          = "terraform-images"
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 location      = "us"
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 force_destroy = true
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}
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​
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resource "google_storage_bucket_object" "walk_server_raw_disk" {
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 name   = "walk-server.tar.gz"
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 source = ops_images.walk_server_image.path
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 bucket = google_storage_bucket.images_bucket.name
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}
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4.Use the path of the object uploaded to create the image.
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resource "google_compute_image" "walk_server_image" {
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 name = "walk-server-img"
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​
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 raw_disk {
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   source = google_storage_bucket_object.walk_server_raw_disk.self_link
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 }
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​
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 labels = {
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   "createdby" = "ops"
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 }
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​
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}
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5.Use the image as base to launch an instance. Make sure you add firewall rules to make your application publicly available.
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resource "google_compute_instance" "walk_server_instance" {
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 name         = "walk-server"
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 machine_type = "f1-micro"
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​
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 boot_disk {
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   initialize_params {
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     image = google_compute_image.walk_server_image.self_link
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   }
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 }
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​
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 labels = {
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   "createdby" = "ops"
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 }
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​
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 tags = ["walk-server"]
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​
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 network_interface {
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   # A default network is created for all GCP projects
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   network = "default"
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   access_config {
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   }
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 }
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}
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​
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resource "google_compute_firewall" "walk_server_firewall" {
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 name    = "walk-server-firewall"
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 network = "default"
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​
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 allow {
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   protocol = "tcp"
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   ports    = ["8080"]
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 }
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​
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 target_tags = ["walk-server"]
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}
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After joining all pieces we get the next terraform configuration file.
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terraform {
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 required_providers {
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   ops = {
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     source = "nanovms/ops"
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   }
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 }
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}
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​
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provider "google" {
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 project = "prod-1033"
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 region  = "us-west2"
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 zone    = "us-west2-a"
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}
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​
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provider "ops" {
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​
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}
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​
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resource "ops_images" "walk_server_image" {
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 name        = "walk-server"
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 elf         = "./walk-server"
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 config      = "./config.json"
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 targetcloud = "gcp"
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}
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​
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resource "google_storage_bucket" "images_bucket" {
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 name          = "terraform-images"
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 location      = "us"
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 force_destroy = true
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}
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​
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resource "google_storage_bucket_object" "walk_server_raw_disk" {
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 name   = "walk-server.tar.gz"
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 source = ops_images.walk_server_image.path
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 bucket = google_storage_bucket.images_bucket.name
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}
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​
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resource "google_compute_image" "walk_server_image" {
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 name = "walk-server-img"
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​
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 raw_disk {
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   source = google_storage_bucket_object.walk_server_raw_disk.self_link
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 }
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​
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 labels = {
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   "createdby" = "ops"
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 }
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​
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}
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​
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resource "google_compute_instance" "walk_server_instance" {
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 name         = "walk-server"
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 machine_type = "f1-micro"
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​
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 boot_disk {
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   initialize_params {
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     image = google_compute_image.walk_server_image.self_link
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   }
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 }
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​
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 labels = {
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   "createdby" = "ops"
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 }
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​
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 tags = ["walk-server"]
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​
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 network_interface {
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   # A default network is created for all GCP projects
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   network = "default"
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   access_config {
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   }
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 }
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}
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​
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resource "google_compute_firewall" "walk_server_firewall" {
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 name    = "walk-server-firewall"
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 network = "default"
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​
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 allow {
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   protocol = "tcp"
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   ports    = ["8080"]
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 }
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​
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 target_tags = ["walk-server"]
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}
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​
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output "image_path" {
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 value = ops_images.walk_server_image.path
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}
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​
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output "instance_ip" {
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 value = google_compute_instance.walk_server_instance.network_interface[0].access_config[0].nat_ip
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}
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After running this configuration you will see the path where the image file was created locally and the ip address of the launched instance.
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