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Ludovico Magnocavallo a4eb4d24fd Compute VM module refactor (#3805 )

* add ad for compute-vm refactor

* Exclue nic_type from validated fields, add split of main.tf and template.tf

* boot disk

* fix examples and fixtures

* attached disks

* fix further examples and module-level tests

* remove extra file

* fix mig examples

* finish refactoring variables

* align fast and other modules

* refactor(compute-vm): align examples and ADR with the newly implemented interface

This commit addresses the remaining references of the `instance_type` and `confidential_compute` parameters in the testing environment and updates the ADR.

* feat(compute-vm): add network_performance_config to instance and templates

This change implements the usage of the `network_performance_tier` variable we added earlier into the actual Terraform resources.

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Co-authored-by: Wiktor Niesiobędzki <wiktorn@google.com>

2026-03-26 11:31:40 +00:00

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Containerized Envoy Proxy with Traffic Director on Container Optimized OS

This module manages a cloud-config configuration that starts a containerized Envoy Proxy on Container Optimized OS connected to Traffic Director. The default configuration creates a reverse proxy exposed on the node's port 80. Traffic routing policies and management should be managed by other means via Traffic Director.

The generated cloud config is rendered in the cloud_config output, and is meant to be used in instances or instance templates via the user-data metadata.

This module depends on the cos-generic-metadata module being in the parent folder. If you change its location be sure to adjust the source attribute in main.tf.

Examples

Default configuration

module "cos-envoy-td" {
  source = "./fabric/modules/cloud-config-container/envoy-traffic-director"
}

module "vm" {
  source     = "./fabric/modules/compute-vm"
  project_id = "my-project"
  zone       = "europe-west8-b"
  name       = "cos-envoy-td"
  network_interfaces = [{
    network    = "default"
    subnetwork = "gce"
  }]
  metadata = {
    user-data              = module.cos-envoy-td.cloud_config
    google-logging-enabled = true
  }
  boot_disk = {
    source = {
      image = "projects/cos-cloud/global/images/family/cos-stable"
    }
    initialize_params = {
      type = "pd-ssd"
      size = 10
    }
  }
  tags = ["http-server", "ssh"]
}
# tftest modules=1 resources=1

Variables

name	description	type	required	default
envoy_image	Envoy Proxy container image to use.	`string`		`"envoyproxy/envoy:v1.15.5"`

Outputs

name	description	sensitive
cloud_config	Rendered cloud-config file to be passed as user-data instance metadata.

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