feat: terraform + ansible config to provision a host on hetzner & set cloudflare DNS

.gitignore

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+# Terraform
+.terraform/
+*.tfstate
+*.tfstate.backup
+*.tfvars
+*.tfvars.json
+.terraform.lock.hcl
+
+# Ansible
+ansible/inventory.ini
+
+# Private Keys & Secrets
+*.pem
+*.key
+*.pub
+id_rsa
+id_rsa.pub
+
+# OS files
+.DS_Store
+Thumbs.db

ansible/ansible.cfg

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+[defaults]
+inventory = inventory.ini
+host_key_checking = False

ansible/group_vars/all.yml

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+---
+ansible_user: "ansible"
+
+sysadmin_user: "alessandrovitali"
+sysadmin_public_ssh_key: "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAm/J+9YG+odym9In9C4iLcrfXlrlPK2TygtI7lBNNpl"

ansible/inventory.tpl

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+[dokploy]
+dokploy ansible_host=${public_ip} ansible_user=debian

ansible/playbook.yml

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+## ansible/setup.yml
+
+- name: Setup dokploy machine
+  hosts: all
+  roles:
+    - role: studio.ansible.base
+    - role: studio.ansible.users
+    - role: studio.ansible.security

ansible/requirements.yml

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+## ansible/requirements.yml
+
+collections:
+  - name: studio.ansible
+    source: https://git.studiovita.li/studio/ansible.git ## HTTPS
+    type: git
+    version: dokploy

terraform/main.tf

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+# SSH key shared with the VPS
+resource "hcloud_ssh_key" "ansible" {
+  name       = var.project_name
+  public_key = var.ssh_public_key
+}
+
+# Provision a small Hetzner Cloud VPS
+resource "hcloud_server" "dokploy" {
+  name        = var.project_name
+  image       = var.hcloud_image
+  server_type = var.hcloud_server_type
+  location    = var.hcloud_location
+  ssh_keys    = [hcloud_ssh_key.ansible.id]
+
+  public_net {
+    ipv4_enabled = true
+  }
+}
+
+# Resolve the Cloudflare zone from its apex domain name
+data "cloudflare_zone" "zone" {
+  filter = {
+    name = var.domain_name
+  }
+}
+
+locals {
+  public_ip = hcloud_server.dokploy.ipv4_address
+}
+
+# Automatically publish the VPS IP as a Cloudflare A record
+resource "cloudflare_dns_record" "a" {
+  zone_id = data.cloudflare_zone.zone.id
+  name    = var.record_name
+  type    = "A"
+  content = local.public_ip
+  proxied = var.cloudflare_proxied
+  ttl     = var.cloudflare_proxied ? 1 : 3600
+}
+
+# Write IP to Ansible inventory
+resource "local_file" "ansible_inventory" {
+  content = templatefile("${path.module}/../ansible/inventory.tpl", {
+    public_ip = local.public_ip
+  })
+  filename = "${path.module}/../ansible/inventory.ini"
+}
+
+output "public_ip" {
+  description = "The public IPv4 address of the provisioned Hetzner Cloud VPS"
+  value       = local.public_ip
+}

terraform/providers.tf

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+terraform {
+  required_version = ">= 1.0.0"
+  required_providers {
+    hcloud = {
+      source  = "hetznercloud/hcloud"
+      version = "~> 1.68.0"
+    }
+    cloudflare = {
+      source  = "cloudflare/cloudflare"
+      version = "~> 5.23.0"
+    }
+    local = {
+      source  = "hashicorp/local"
+      version = "~> 2.9.0"
+    }
+  }
+}
+
+provider "hcloud" {
+  token = var.hcloud_token
+}
+
+provider "cloudflare" {
+  api_token = var.cloudflare_api_token
+}

terraform/variables.tf

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+variable "project_name" {
+  type        = string
+  description = "VM name"
+}
+
+variable "ssh_public_key" {
+  type        = string
+  description = "Public SSH key to install on the VM"
+}
+
+## HETZNER
+variable "hcloud_token" {
+  type        = string
+  description = "Hetzner Cloud API token"
+  sensitive   = true
+}
+
+variable "hcloud_server_type" {
+  type        = string
+  description = "Hetzner Cloud server type"
+  default     = "cx22" # 2 vCPU / 4 GB RAM / 40 GB NVMe
+}
+
+variable "hcloud_image" {
+  type        = string
+  description = "OS image name to boot the VPS from"
+  default     = "debian-13"
+}
+
+variable "hcloud_location" {
+  type        = string
+  description = "Hetzner Cloud location"
+  default     = "nbg1" # Nuremberg, Germany
+}
+
+## CLOUDFLARE
+variable "cloudflare_api_token" {
+  type        = string
+  description = "Cloudflare API token with Zone.DNS edit permission"
+  sensitive   = true
+}
+
+variable "domain_name" {
+  type        = string
+  description = "Cloudflare zone (apex domain) in which to create the A record"
+}
+
+variable "record_name" {
+  type        = string
+  description = "DNS record name relative to the zone; use \"@\" for the apex"
+  default     = "dokploy"
+}
+
+variable "cloudflare_proxied" {
+  type        = bool
+  description = "Whether Cloudflare should proxy (orange-cloud) the A record"
+  default     = true
+}