variable "gcp_project" { description = "GCP project ID used for provider-scoped resources." type = string } variable "gcp_region" { description = "GCP region used for regional resources." type = string } variable "gcp_zone" { description = "GCP zone used for the relay instance." type = string } variable "network_name" { description = "VPC network name." type = string default = "default" } variable "instance_name" { description = "Name of the relay VM." type = string default = "relay-main" } variable "machine_type" { description = "GCP machine type for the relay." type = string default = "e2-micro" } variable "admin_ssh_public_key" { description = "Optional SSH public key injected for the ubuntu user." type = string default = "" }