Initial infra attempt

2026-06-21 13:37:03 -04:00
parent f0a0ea508a
commit a1c91c5ed3
7 changed files with 339 additions and 0 deletions
@@ -0,0 +1,14 @@
+# Managed by CI — deployed to /etc/caddy/Caddyfile on the server.
+# Caddy handles TLS automatically via Let's Encrypt.
+
+api.{$DRB_DOMAIN} {
+  reverse_proxy localhost:8888 {
+    header_up X-Forwarded-For {remote_host}
+  }
+}
+
+app.{$DRB_DOMAIN} {
+  reverse_proxy localhost:3000 {
+    header_up X-Forwarded-For {remote_host}
+  }
+}
@@ -0,0 +1,138 @@
+terraform {
+  required_version = ">= 1.6"
+  required_providers {
+    google = {
+      source  = "hashicorp/google"
+      version = "~> 5.0"
+    }
+  }
+
+  # Store state in GCS — create the bucket manually once before first apply
+  backend "gcs" {
+    bucket = "drb-tf-state"
+    prefix = "drb/state"
+  }
+}
+
+provider "google" {
+  project = var.project_id
+  region  = var.region
+}
+
+# ---------------------------------------------------------------------------
+# Static external IP
+# ---------------------------------------------------------------------------
+
+resource "google_compute_address" "drb" {
+  name   = "drb-server-ip"
+  region = var.region
+}
+
+# ---------------------------------------------------------------------------
+# Firewall rules
+# ---------------------------------------------------------------------------
+
+resource "google_compute_firewall" "allow_web" {
+  name    = "drb-allow-web"
+  network = "default"
+
+  allow {
+    protocol = "tcp"
+    ports    = ["80", "443"]
+  }
+
+  source_ranges = ["0.0.0.0/0"]
+  target_tags   = ["drb-server"]
+}
+
+resource "google_compute_firewall" "allow_ssh" {
+  name    = "drb-allow-ssh"
+  network = "default"
+
+  allow {
+    protocol = "tcp"
+    ports    = ["22"]
+  }
+
+  # Restrict SSH to your IP(s) and Gitea runner IP
+  source_ranges = var.allowed_ssh_cidrs
+  target_tags   = ["drb-server"]
+}
+
+# MQTT is NOT exposed externally — edge nodes connect via WireGuard (see below)
+# If you need to temporarily allow direct MQTT access for testing, uncomment and
+# restrict source_ranges to your node IPs.
+#
+# resource "google_compute_firewall" "allow_mqtt" {
+#   name    = "drb-allow-mqtt"
+#   network = "default"
+#   allow {
+#     protocol = "tcp"
+#     ports    = ["8883"]  # TLS MQTT, not 1883
+#   }
+#   source_ranges = ["YOUR_NODE_CIDR"]
+#   target_tags   = ["drb-server"]
+# }
+
+# ---------------------------------------------------------------------------
+# Compute Engine VM
+# ---------------------------------------------------------------------------
+
+resource "google_compute_instance" "drb_server" {
+  name         = "drb-server"
+  machine_type = var.machine_type
+  zone         = var.zone
+  tags         = ["drb-server"]
+
+  boot_disk {
+    initialize_params {
+      image = "debian-cloud/debian-12"
+      size  = 30  # GB — enough for Docker images + mosquitto data
+      type  = "pd-balanced"
+    }
+  }
+
+  network_interface {
+    network = "default"
+    access_config {
+      nat_ip = google_compute_address.drb.address
+    }
+  }
+
+  metadata = {
+    ssh-keys = "${var.ssh_user}:${var.ssh_public_key}"
+  }
+
+  # Startup script runs once on first boot to install Docker + Caddy
+  metadata_startup_script = file("${path.module}/startup.sh")
+
+  # Allow the VM to pull from Artifact Registry using its service account
+  service_account {
+    scopes = ["cloud-platform"]
+  }
+
+  lifecycle {
+    # Prevent Terraform from destroying + recreating on metadata changes
+    ignore_changes = [metadata_startup_script]
+  }
+}
+
+# ---------------------------------------------------------------------------
+# Cloud DNS records
+# ---------------------------------------------------------------------------
+
+resource "google_dns_record_set" "app" {
+  name         = "app.${var.domain}."
+  type         = "A"
+  ttl          = 300
+  managed_zone = var.dns_zone_name
+  rrdatas      = [google_compute_address.drb.address]
+}
+
+resource "google_dns_record_set" "api" {
+  name         = "api.${var.domain}."
+  type         = "A"
+  ttl          = 300
+  managed_zone = var.dns_zone_name
+  rrdatas      = [google_compute_address.drb.address]
+}
@@ -0,0 +1,12 @@
+output "server_ip" {
+  value       = google_compute_address.drb.address
+  description = "Static external IP of the DRB server VM"
+}
+
+output "app_url" {
+  value = "https://app.${var.domain}"
+}
+
+output "api_url" {
+  value = "https://api.${var.domain}"
+}
@@ -0,0 +1,55 @@
+#!/bin/bash
+# Runs once on first VM boot. Installs Docker, Docker Compose, and Caddy.
+set -euxo pipefail
+
+# ── Docker ────────────────────────────────────────────────────────────────────
+apt-get update -y
+apt-get install -y ca-certificates curl gnupg lsb-release
+
+install -m 0755 -d /etc/apt/keyrings
+curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+chmod a+r /etc/apt/keyrings/docker.gpg
+
+echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] \
+  https://download.docker.com/linux/debian $(lsb_release -cs) stable" \
+  > /etc/apt/sources.list.d/docker.list
+
+apt-get update -y
+apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+
+systemctl enable docker
+systemctl start docker
+
+# Allow drb user to run docker
+usermod -aG docker drb 2>/dev/null || true
+
+# ── Caddy (reverse proxy + auto TLS) ─────────────────────────────────────────
+apt-get install -y debian-keyring debian-archive-keyring apt-transport-https
+curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' \
+  | gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
+curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' \
+  > /etc/apt/sources.list.d/caddy-stable.list
+apt-get update -y
+apt-get install -y caddy
+
+# ── App directory — clone repo so CI can git pull + docker compose up ─────────
+apt-get install -y git
+mkdir -p /opt/drb
+# Repo is cloned here by initial setup; CI just git pulls and rebuilds.
+# Set safe directory for the drb user
+git config --global --add safe.directory /opt/drb
+chown -R drb:drb /opt/drb 2>/dev/null || true
+
+# ── Caddyfile placeholder (CI will write the real one on first deploy) ────────
+cat > /etc/caddy/Caddyfile <<'CADDY'
+# This file is managed by CI. Do not edit manually.
+# It will be replaced on the first deployment.
+:80 {
+  respond "DRB server — waiting for deployment" 200
+}
+CADDY
+
+systemctl enable caddy
+systemctl reload caddy
+
+echo "Startup complete."
@@ -0,0 +1,48 @@
+variable "project_id" {
+  description = "GCP project ID"
+  type        = string
+}
+
+variable "region" {
+  description = "GCP region"
+  type        = string
+  default     = "us-central1"
+}
+
+variable "zone" {
+  description = "GCP zone"
+  type        = string
+  default     = "us-central1-a"
+}
+
+variable "domain" {
+  description = "Base domain (e.g. example.com)"
+  type        = string
+}
+
+variable "dns_zone_name" {
+  description = "Cloud DNS managed zone name"
+  type        = string
+}
+
+variable "machine_type" {
+  description = "Compute Engine machine type"
+  type        = string
+  default     = "e2-small"
+}
+
+variable "ssh_user" {
+  description = "SSH username for the VM"
+  type        = string
+  default     = "drb"
+}
+
+variable "ssh_public_key" {
+  description = "SSH public key to authorize on the VM"
+  type        = string
+}
+
+variable "allowed_ssh_cidrs" {
+  description = "CIDR ranges allowed to SSH to the VM (your IP + Gitea runner)"
+  type        = list(string)
+}