coder-hetzner-cloud-template.tar

cloud-config.yaml.tftpl0100777000000000000000000000336214640001056012401 0ustar00#cloud-config
users:
  - name: ${username}
    sudo: ["ALL=(ALL) NOPASSWD:ALL"]
    groups: sudo
    shell: /bin/bash
packages:
  - git
  - curl
  - jq
mounts:
  - [
      "${volume_path}",
      "/home/${username}",
      ext4,
      "discard,defaults",
    ]
write_files:
  - path: /opt/coder/init
    permissions: "0755"
    encoding: b64
    content: ${init_script}
  - path: /etc/systemd/system/coder-agent.service
    permissions: "0644"
    content: |
      [Unit]
      Description=Coder Agent
      After=network-online.target
      Wants=network-online.target

      [Service]
      User=${username}
      ExecStart=/opt/coder/init
      Environment=CODER_AGENT_TOKEN=${coder_agent_token}
      Restart=always
      RestartSec=10
      TimeoutStopSec=90
      KillMode=process

      OOMScoreAdjust=-900
      SyslogIdentifier=coder-agent

      [Install]
      WantedBy=multi-user.target
%{ if code_server_setup ~}
  - path: /tmp/install_code_server.sh
    permissions: "0777"
    content: |
      #!/bin/bash
      CODE_SERVER_DOWNLOAD_URL=$(curl -sL https://api.github.com/repos/coder/code-server/releases/latest | jq -r '.assets[].browser_download_url' | grep "amd64.deb")
      curl -fL $CODE_SERVER_DOWNLOAD_URL -o /tmp/code_server.deb
      dpkg -i /tmp/code_server.deb
      systemctl enable --now code-server@${username}
      rm /tmp/code_server.deb
  - path: /home/${username}/.config/code-server/config.yaml
    permissions: "0644"
    content: |
      bind-addr: 127.0.0.1:8080
      auth: none
      cert: false
%{ endif ~}
runcmd:
  - chown ${username}:${username} /home/${username}
  - systemctl enable coder-agent
  - systemctl start coder-agent
%{ if code_server_setup ~}
  - /tmp/install_code_server.sh
  - rm /tmp/install_code_server.sh
%{ endif }
coder.yaml0100777000000000000000000000046314637744640010016 0ustar00display_name: Hetzner Cloud
description: Hetzner Cloud template for Coder to set up a development environment with or without vscode.
icon: https://cdn.hetzner.com/assets/Uploads/Hetzner-Logo-slogan_space-trans.png
maintainer_github: Rhiz3K
verified: false
tags: [hetzner, cloud, vscode, development]
LICENSE0100777000000000000000000010451514637575316007050 0ustar00                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

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  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.

  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.

                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.
main.tf0100777000000000000000000001131114640165304007273 0ustar00terraform {
  required_providers {
    coder = {
      source  = "coder/coder"
      version = "0.23.0"
    }
    hcloud = {
      source  = "hetznercloud/hcloud"
      version = "1.47.0"
    }
  }
}

provider "hcloud" {
  token = var.hcloud_token
}

provider "coder" {
}

variable "hcloud_token" {
  description = <<EOF
Coder requires a Hetzner Cloud token to provision workspaces.
EOF
  sensitive   = true
  validation {
    condition     = length(var.hcloud_token) == 64
    error_message = "Please provide a valid Hetzner Cloud API token."
  }
}

variable "instance_location" {
  description = "What region should your workspace live in?"
  default     = "fsn1"
  validation {
    condition     = contains(["nbg1", "fsn1", "hel1"], var.instance_location)
    error_message = "Invalid zone!"
  }
}

variable "instance_type" {
  description = "What instance type should your workspace use?"
  default     = "cpx11"
  validation {
    condition     = contains(["cx22", "cpx11", "cx32", "cpx21", "cpx31", "cx42", "cx41", "cpx51"], var.instance_type)
    error_message = "Invalid instance type!"
  }
}

variable "instance_os" {
  description = "Which operating system should your workspace use?"
  default     = "ubuntu-24.04"
  validation {
    condition     = contains([
      "ubuntu-24.04", 
      "fedora-40", 
      "debian-12", 
      "centos-stream-9", 
      "almalinux-9", 
      "rockylinux-9"
    ], var.instance_os)
    error_message = "Invalid OS!"
  }
}

variable "volume_size" {
  description = "How much storage space do you need in GB (can't be less then 10)?"
  default     = "10"
  validation {
    condition     = var.volume_size >= 10
    error_message = "Invalid volume size!"
  }
}

variable "code_server" {
  description = "Should Code Server be installed?"
  default     = "true"
  validation {
    condition     = contains(["true","false"], var.code_server)
    error_message = "Your answer can only be yes or no!"
  }
}

data "coder_workspace" "me" {}

resource "coder_agent" "dev" {
  arch = "amd64"
  os   = "linux"

   metadata {
    display_name = "CPU Usage"
    key          = "cpu_usage"
    order        = 0
    script       = "coder stat cpu"
    interval     = 10
    timeout      = 1
  }

  metadata {
    display_name = "RAM Usage"
    key          = "ram_usage"
    order        = 1
    script       = "coder stat mem"
    interval     = 10
    timeout      = 1
  }

  metadata {
    display_name = "Disk Usage (Host)"
    key          = "disk_host"
    order        = 6
    script       = "coder stat disk --path /"
    interval     = 600
    timeout      = 10
  }  
}  


resource "coder_app" "code-server" {
  agent_id     = coder_agent.dev.id
  slug         = "code-server"
  display_name = "VS Code"
  icon         = "${data.coder_workspace.me.access_url}/icon/code.svg"
  url          = "http://localhost:8080"
  share        = "owner"
  subdomain    = false
  healthcheck {
    url       = "http://localhost:8080/healtz"
    interval  = 5
    threshold = 6
  }
}

# Generate a dummy ssh key that is not accessible so Hetzner cloud does not spam the admin with emails.
resource "tls_private_key" "rsa_4096" {
  algorithm = "RSA"
  rsa_bits  = 4096
}

resource "hcloud_ssh_key" "root" {
  name       = "coder-${data.coder_workspace.me.name}-root"
  public_key = tls_private_key.rsa_4096.public_key_openssh
}

resource "hcloud_server" "root" {
  count       = data.coder_workspace.me.start_count
  name        = "coder-${data.coder_workspace.me.name}-root"
  server_type = var.instance_type
  location    = var.instance_location
  image       = var.instance_os
  ssh_keys    = [hcloud_ssh_key.root.id]
  user_data   = templatefile("cloud-config.yaml.tftpl", {
    username          = data.coder_workspace.me.name
    volume_path       = "/dev/disk/by-id/scsi-0HC_Volume_${hcloud_volume.root.id}"
    init_script       = base64encode(coder_agent.dev.init_script)
    coder_agent_token = coder_agent.dev.token
    code_server_setup = var.code_server
  })
}

resource "hcloud_volume" "root" {
  name         = "coder-${data.coder_workspace.me.name}-root"
  size         = var.volume_size
  format       = "ext4"
  location     = var.instance_location
}

resource "hcloud_volume_attachment" "root" {
  count     = data.coder_workspace.me.start_count
  volume_id = hcloud_volume.root.id
  server_id = hcloud_server.root[count.index].id
  automount = false
}

resource "hcloud_firewall" "root" {
  name = "coder-${data.coder_workspace.me.name}-root"
  rule {
    direction = "in"
    protocol  = "icmp"
    source_ips = [
      "0.0.0.0/0",
      "::/0"
    ]
  }
}

resource "hcloud_firewall_attachment" "root_fw_attach" {
    count = data.coder_workspace.me.start_count
    firewall_id = hcloud_firewall.root.id
    server_ids  = [hcloud_server.root[count.index].id]
}
README.md0100777000000000000000000000334414640175077007312 0ustar00# coder-hetzner-cloud-template

This repository provides a Terraform template for Coder (https://github.com/coder/coder) that facilitates the setup of a cloud-based development environment using Hetzner Cloud. It allows provisioning of instances with optional vscode installation.

## Usage

- Download files from repo
- Add them to .tar archive / or use the included one
- Create template in Coder by Uploading the .tar file
- Add hcloud API token from (https://console.hetzner.cloud/projects/<YOUR_PROJECT_ID>/security/tokens)

## Features

![Hetzner Cloud Logo](https://cdn.hetzner.com/assets/Uploads/Hetzner-Logo-slogan_space-trans.png)

- Creates a Hetzner Cloud instance.
- Creates a Hetzner Cloud volume.
- Sets up a default inbound firewall policy.
- Attaches volumes and firewall policies to the instance.
- Offers the option to install code-server based on user preference.

## Updated Terraform Versions

- coder/coder: 0.23.0
- hetznercloud/hcloud: 1.47.0

## Changes

- added metadata blocks for stats
- included .tar file for template upload

## Default Variables

- `instance_location`: fsn1/Falkenstein (eu-central)
- `instance_type`: cpx11
  - Hetzner Cloud server with shared AMD vCPU
  - **Specifications:**
    - **Name:** CPX11
    - **vCPUs:** 2
    - **RAM:** 2 GB
    - **SSD:** 40 GB
    - **Traffic:** 20 TB
    - **Price:** €0.008/h, €4.66/mo, €0.61/IPv4
- `instance_os`: ubuntu-24.04
- `volume_size`: 10 GB (minimum) persistent volume

## Credits

- [ntimo/coder-hetzner-cloud-template](https://github.com/ntimo/coder-hetzner-cloud-template)
- [coder/terraform-provider-coder](https://github.com/coder/terraform-provider-coder)
- [hetznercloud/terraform-provider-hcloud](https://github.com/hetznercloud/terraform-provider-hcloud)