Initial commit

.editorconfig

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+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+end_of_line = lf
+max_line_length = null
+
+[Makefile]
+indent_style = tab

.gitignore

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+.terraform
+.terraform.lock.hcl
+variables.auto.tfvars

main.tf

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+variable "hcloud_token" {
+  type = string
+}
+
+provider "hcloud" {
+  token = var.hcloud_token
+}
+
+data "hcloud_ssh_key" "vojtechmares" {
+  name = "iam@vojtechmares.com"
+}
+
+resource "hcloud_ssh_key" "ssh_key" {
+  name = "ssh-key"
+  public_key = var.ssh_public_key
+}
+
+data "ct_config" "ignition" {
+  content = file("templates/config.yaml")
+  strict       = true
+  pretty_print = true
+}
+
+resource "hcloud_server" "server" {
+  name        = "flatcar-linux--test"
+  server_type = "cx11"
+
+  labels = {
+    "os" = "flatcar-linux"
+  }
+
+  location = "nbg1"
+
+  // Unused because of rescue mode, but required field
+  image    = "debian-11"
+  rescue   = "linux64"
+  ssh_keys = [data.hcloud_ssh_key.vojtechmares.id]
+
+  connection {
+    host    = hcloud_server.test.ipv4_address
+    timeout = "5m"
+    user    = "root"
+  }
+
+  provisioner "file" {
+    content     = data.ct_config.ignition.rendered
+    destination = "/root/ignition.json"
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "set -ex",
+      "apt update -y",
+      "apt install -y gawk",
+      "curl -fsSLO --retry-delay 1 --retry 60 --retry-connrefused --retry-max-time 60 --connect-timeout 20 https://raw.githubusercontent.com/kinvolk/init/flatcar-master/bin/flatcar-install",
+      "chmod +x flatcar-install",
+      "./flatcar-install -s -i /root/ignition.json",
+      "shutdown -r +1",
+    ]
+  }
+
+  # Configure after installation
+  provisioner "remote-exec" {
+    connection {
+      host    = self.ipv4_address
+      timeout = "3m"
+      user    = "core"
+    }
+
+    inline = [
+      "sudo hostnamectl set-hostname ${self.name}",
+    ]
+  }
+
+}
+
+output "ip" {
+  value = hcloud_server.server.ipv4_address
+}

templates/config.yaml

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+---
+passwd:
+  users:
+    - name: core
+      ssh_authorized_keys:
+        - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEUz21xFatGKfSwjeg/BOBus2Jn17o8xVthrMFAsDtRD iam@vojtechmares.com
+
+systemd:
+  units:
+    # Using flatcar-linux-update-operator instead. See: https://github.com/flatcar-linux/flatcar-linux-update-operator#requirements for more information
+    - name: locksmithd.service
+      mask: true
+    - name: update-engine.service
+      enabled: true

versions.tf

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+terraform {
+  required_providers {
+    hcloud = {
+      source  = "hetznercloud/hcloud"
+      version = "1.32.1"
+    }
+    ct = {
+      source  = "poseidon/ct"
+      version = "0.9.1"
+    }
+  }
+}