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terraform.md

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Verify that Terraform is available terraform

Inititialization run a new configuration terraform init

Create an execution plan terraform plan

Apply changes in the same directory as .tf file terraform apply

Inspect current state terraform show

Import module terraform import module.instances-PROJECT-ID ./modules/instances

Recreate the instance terraform taint NAME_INSTANCE

Destroy infrastructure terraform destroy

Refresh the state terraform refresh

Modules registry, provision an example environment https://registry.terraform.io/modules/terraform-google-modules/network/google/3.3.0

Create resource in file with extention .tf example instance.tf `resource "google_compute_instance" "terraform" { project = "<PROJECT_ID>" name = "terraform" machine_type = "n1-standard-1" zone = "us-central1-a" boot_disk { initialize_params { image = "debian-cloud/debian-9" } } network_interface { network = "default" access_config { } } }

#EXAMPLE BUCKET CONFIG -> Storage module resource "google_storage_bucket" "static-site" { name = "IMAGE_NAME" location = "US" force_destroy = true uniform_bucket_level_access = true }

Example main.tf file #TERRAFORM BLOCK terraform { required_providers { google = { source = "hashicorp/google" } } } #PROVIDER BLOCK provider "google" { version = "3.5.0" }

terraform { backend "gcs" { bucket = "BUCKET_NAME" prefix = "terraform/state" } }

#MODULES module "instances" { source = "./modules/instances" project_id = var.project_id lifecycle_rules = [{ action = { type = "Delete" } condition = { age = 365 with_state = "ANY" } }] }

module "storage" { source = "./modules/storage" project_id = var.project_id lifecycle_rules = [{ action = { type = "Delete" } condition = { age = 365 with_state = "ANY" } }] }

#RESOURCE INSTANCE EXAMPLE resource "google_compute_instance" "default" { name = "tf-instance-1" machine_type = "e2-medium" network_interface { network = "default"

access_config {
  // Ephemeral public IP
}

metadata_startup_script = <<-EOT #!/bin/bash EOT allow_stopping_for_update = true boot_disk { initialize_params { image = "debian-cloud/debian-9" } }

resource "google_compute_instance" "default2" { name = "tf-instance-2" machine_type = "e2-medium" network_interface { network = "default"

access_config {
  // Ephemeral public IP
}

metadata_startup_script = <<-EOT #!/bin/bash EOT allow_stopping_for_update = true boot_disk { initialize_params { image = "debian-cloud/debian-9" } }

#Variables variable "region" { description = "The region of instances" default = "us-east1" }

variable "zone" { description = "The zone of instances" default = "us-east1-c"

variable "project_id" { description = "The project ID to host the network in" default = "FILL IN YOUR PROJECT ID HERE" }`