ArkHost Hetzner VPS Module

WHMCS server module for Hetzner Cloud VPS management.

Features

Core

• VPS lifecycle: create, suspend, unsuspend, terminate
• Server control: start, stop, restart, shutdown
• Automatic provisioning on payment

Advanced

• Floating IP management with reverse DNS
• Backup creation and restoration
• Firewall rule management
• Performance graphs (CPU, network, disk I/O)
• Rescue mode with temporary passwords
• ISO mounting
• OS reinstallation

Interface

• Bootstrap 4 responsive design
• Multiple language translations included
• Real-time status updates
• VNC console access

Requirements

• WHMCS 8.9+
• PHP 7.4+
• Hetzner Cloud API token
• cURL extension
• HTTPS connection

Installation

1. Upload files to /path/to/whmcs/modules/servers/ArkHostHetznerVPS/
2. Create server and add it to a server group:
   • Setup → Products/Services → Servers → Create New Group
   • Name: Hetzner Cloud
   • Type: ArkHostHetznerVPS
   • Hostname: localhost
   • Username: Hetzner Project ID (optional)
   • Password: Hetzner Cloud API Token
3. Create products:
   • Setup → Products/Services → Products/Services → Create New Product
   • Type: VPS/Dedicated Server
   • Module: ArkHostHetznerVPS
   • Server Group: Select Hetzner Cloud

Configuration

Module Settings

• Server Type: cx11, cx21, cx31, cx41, cx51 , etc.
• Operating System: ubuntu-20.04, debian-11, etc.
• Datacenter: fsn1, nbg1, hel1, ash, hil
• Backups: On/Off
• Create Floating IP: On/Off

Custom Field (Required)

• Field Name: ArkHostHetznerVPS|VPS ID
• Type: Text Box
• Admin Only: Yes

For ModulesGarden migration, keep existing serverID|Server ID field.

Configurable Options

Create in Setup → Products/Services → Configurable Options:

1. Floating IP Add-on

• Option Name: Floating IP
• Option Type: Yes/No
• Options:
  • No|None
  • Yes|1 Floating IP

2. Datacenter Selection

• Option Name: datacenter
• Option Type: Dropdown
• Options:
  • fsn1|Falkenstein, Germany
  • nbg1|Nuremberg, Germany
  • hel1|Helsinki, Finland
  • ash|Ashburn, USA
  • hil|Hillsboro, USA

3. Server Type

• Option Name: planid
• Option Type: Dropdown
• Options:
  • cx11|CX11 (1 vCPU, 2GB RAM, 20GB SSD)
  • cx21|CX21 (2 vCPU, 4GB RAM, 40GB SSD)
  • cx31|CX31 (2 vCPU, 8GB RAM, 80GB SSD)
  • cx41|CX41 (4 vCPU, 16GB RAM, 160GB SSD)
  • cx51|CX51 (8 vCPU, 32GB RAM, 240GB SSD)

4. Operating System

• Option Name: osid
• Option Type: Dropdown
• Options:
  • ubuntu-20.04|Ubuntu 20.04 LTS
  • ubuntu-22.04|Ubuntu 22.04 LTS
  • debian-11|Debian 11
  • debian-12|Debian 12
  • centos-stream-8|CentOS Stream 8
  • centos-stream-9|CentOS Stream 9
  • rocky-8|Rocky Linux 8
  • rocky-9|Rocky Linux 9

Client Interface

Overview: Server status, information, control buttons Graphs: CPU, network, disk I/O monitoring Backups: Create, restore, delete backups Settings: Hostname, ISO, password reset, reinstall, firewall, rescue mode, floating IP

SSH Key Management

Why no SSH key feature?

Hetzner's API stores SSH keys at the project level, not per-server. In a multi-tenant WHMCS environment, this creates security risks:

• Potential key exposure across customers
• No proper isolation between services
• Complex workarounds that compromise security

Current recommended approach:

1. Use password authentication for initial access
2. Add your SSH key manually: ssh-copy-id root@your-server-ip
3. Secure your server:

sed -i 's/PasswordAuthentication yes/PasswordAuthentication no/' /etc/ssh/sshd_configsystemctl restart sshd

This ensures proper key isolation and security for each customer.

Future development:

We're exploring secure implementations using cloud-init or per-server user data to enable SSH key management while maintaining proper isolation.

Screenshots

Troubleshooting

API Connection Failed: Check API token in server group settings Server Not Found: Verify VPS ID custom field exists Floating IP Issues: Enable in configurable options

Enable module debugging: Configuration → System Logs → Module Log

Support

support@arkhost.com

License

MIT License - see LICENSE file for details.

Free and open source. Commercial support available.

Other ArkHost Modules

Check out our other WHMCS modules at arkhost.com/whmcs-modules.php

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