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Proxmox VE Cloud VPS For WHMCS

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About Proxmox VE Cloud VPS For WHMCS

Proxmox VE Cloud VPS For WHMCS offers your clients the flexibility to create, remove and freely resize their own virtual servers within resource limits defined by you.

Your customers will be able to create as many servers as they need, manage such essential aspects like backups or firewall, and access noVNC, SPICE, or Xterm.js console.
The module supports Cloud-Init for the KVM virtualization type, and features Proxmox Addon allowing you to easily manage servers, IP addresses and clusters.

ModulesGarden is official Proxmox Solution Partner and this module is recommended by Proxmox Server Solutions GmbH.

  • Admin Area Features:
✔ Create/Suspend/Unsuspend/Terminate User Account
✔ Change Package
✔ Change User Role
✔ Reset Bandwidth
✔ Migrate/Import/Delete Server
✔ View Available Resources (Memory, vCPUs, Disks, Networks)
✔ Display Disk And Bandwidth Usage Of Each Product
✔ View Servers Status And Details
✔ View Available IP Addresses
✔ View User Details
✔ Set Up KVM And LXC Product Configuration:
✔ Main Configuration Limits
✔ Server Limits
✔ Mount Point (LXC)
✔ Backup
✔ Network And Private Network Settings With SDN Support
✔ Hard Disk (KVM)
✔ Additional Disks (KVM)
✔ Boot
✔ Firewall
✔ Firewall Options (KVM)
✔ Cloud-Init (KVM)
✔ Guest Agent (KVM)
✔ User
✔ Miscellaneous
✔ Load Balancer
✔ KVM And LXC Configuration
✔ Additional KVM And LXC Configuration
✔ High Availability Cluster
✔ Console
✔ Client Area Features
✔ Configurable Option Units
✔ CPU Priority
✔ Generate Configurable Options
✔ Additional Configuration Features:
✔ Define Resource Limits:
✔ Static
✔ Dynamic
✔ Define Server Minimum And Maximum Resource Values
✔ Import IP Address To Hosting IP Addresses Table
✔ Return IP Address To IP Addresses Subnet
✔ Add Additional IP Address To VM
✔ Enable Backups Routing
✔ Enable Auto VM Backups Before Reinstallation
✔ Enable Reset Usage First Day Of Month
✔ Define Node Selection:
✔ Server-Node
✔ Auto-Node
✔ Custom Chosen Node
  • Proxmox Addon Features:
✔ Display Servers:
✔ List Per VPS And Cloud
✔ Clusters List
✔ VMs List
✔ KVM Templates
✔ Recovery VM Configurations List With Export To Backup File
✔ Tasks History
✔ Statuses, Resources Usage, IP Assignments And Details
✔ Manage Public And Private IP Addresses Per Server/VLAN/Tag/Node/Bridge:
✔ IPv4 Addresses
✔ IPv6 Addresses
✔ IPv6 Subnets
✔ View Logs Of IP Assignment Changes
✔ VM Cleaner - Manage VM Not Existing In Your WHMCS
✔ Convert KVM VPS To KVM Template
✔ Define VM ID Ranges Per Server
✔ Set Minimum VM ID For Product Without ID Ranges Defined
✔ Provide Server Credentials For Cloud-Init Scripts
✔ Configure Scheduled Backups, Firewall And Operating Systems Templates
✔ Configure Resource Weights For Load Balancer Prioritization
✔ Configure Tasks Repetition Threshold And Email Notifications
✔ Configure Console Proxy
✔ Synchronize User Permissions
✔ Create And Manage Custom Cloud-Init Scripts
  • Proxmox VE Widget
✔ View Faulty VM Deployments
✔ View Failed Tasks
✔ View Cluster Remaining Resources
✔ View Node Resources
  • Client Area Features:
✔ Create/Edit/Delete Servers
✔ Create/Edit/Delete Virtual Networks
✔ View Available Resources And Usage (Memory, vCPUs, Disks, Networks)
✔ Set Up Virtual Machines:
✔ Define Machine Settings:
✔ Name
✔ Type
✔ Description
✔ Define Machine Parameters:
✔ Location
✔ Sockets (KVM)
✔ Cores (LXC)
✔ vCPU (KVM)
✔ CPU Priority
✔ Disk Size
✔ Default User (KVM)
✔ Password
✔ SSH Key
✔ Search Domain (KVM)
✔ Name Servers (KVM)
✔ Add Virtual Networks
✔ Add Additional Disks
✔ Start/Reboot/Stop/Shut Down/Delete Server
✔ Reconfigure Server Network
✔ Access noVNC, SPICE, And Xterm.js Console
✔ View And Manage Machine Details
✔ View And Manage Disks
✔ View And Manage Virtual Networks And Interfaces
✔ Take, Manage, Schedule And Restore Snapshots
✔ Create, Manage And Restore Backups
✔ Schedule Automatic Backups In Defined Periods
✔ Edit Firewall Options And Manage Its Rules
✔ View Tasks History
✔ View CPU/Disk/Memory/Network Graphs Usage
✔ Reinstall Server Using:
✔ OS Templates (KVM)
✔ ISO Images
✔ Choose Server Resources While Ordering And Upgrade/Downgrade Them Freely
  • Configurable Options:
KVM Limits:
✔ CPU Sockets
✔ CPU Cores
✔ CPU Limit
✔ CPU Units Limit
✔ Memory
✔ Storage
✔ IPv4 Addresses
✔ IPv6 Addresses
✔ IPv6 Subnets
✔ Backups Size
✔ Backups Files
✔ Snapshots
✔ Bandwidth
✔ Network Rate
✔ Virtual Networks
✔ Snapshot Jobs
✔ Storage Disk Space
LXC Limits:
✔ CPU Limit
✔ CPU Units Limit
✔ Memory
✔ Storage
✔ IPv4 Addresses
✔ IPv6 Addresses
✔ IPv6 Subnets
✔ Backups Size
✔ Backups Files Limit
✔ Snapshots
✔ Bandwidth
✔ Network Rate
✔ Virtual Networks
✔ Snapshot Jobs
✔ Storage Disk Space
  • General Info:
✔ Supports Cloud-Init (KVM)
✔ Supports PVE And PAM Authentication
✔ Supports KVM And LXC Virtualization
✔ Supports Proxy For Proxmox Console Connections
✔ Integrated With Advanced Billing For WHMCS - Actual Server Resource Usage Billing
✔ Integrated With Proxmox VE VPS For WHMCS - Remote Provisioning And Management Of Virtual Servers
✔ Integrated With IP Manager For WHMCS - Complete Control And Easy Assignment Of IP Subnets (LXC)
✔ Fully Integrated With Lagom Client Theme
✔ Multi-Language Support
✔ Supports Proxmox VE 6.X, 7.X And 8.X
✔ Supports IPv4 And IPv6
✔ Supports PHP 8.1 Back To PHP 7.4
✔ Supports WHMCS Themes "Six" And "Twenty-One"
✔ Supports V8.10 Back To WHMCS V8.8
✔ Requires ionCube Loader V12 Or Later
✔ Easy Module Upgrade To Open Source Version

Installation and Configuration

This tutorial will show you how to successfully install and configure Proxmox VE Cloud VPS For WHMCS.

We will guide you step by step through the whole installation and configuration process.

Note: If you are still using any of the module's previous versions prior to v3.0, follow these instructions.


1. Log in to our client area and download the module.
PXC3 1.png
2. In the downloaded file you will two packages that support different PHP versions.

The first one that supports PHP 7.3 up to PHP 7.4, and the second one addressed to PHP 8.1.
Note: Keep in mind that PHP versions 5.6 up to 7.2 are no longer officially supported and their security issues are not fixed or released any more. Find more info here.

PHP proxmox.png
Note: You can check the current PHP version in your WHMCS. To do so, proceed to 'Utilities' → 'System' → 'PHP Info'.
3. Extract the package and upload its content into the main WHMCS directory.

The content of the package to upload should look like this.

PX2 2 1.png
Warning: The next step is important, make sure you do not skip it!
4. Open 'UploadOnProxmoxServer' and upload content of the proper version on all Proxmox Virtual Environment servers into the '/' path.
You should upload these files not only during the first installation of the module but also each time you update it.

Note 1: If the version of the Proxmox server you are using is not available, choose the package with the highest version number that is lower than the one you are currently using.
Note 2: If you wish to allow noVNC consoles, you need to configure a product using the PVE realm and set user permissions to 'PVEVMUser.'
Important: Open Folder UploadOnProxmoxServer/5.2-10 and upload content on all your proxmox servers. Scripts must be updated on proxmox server v2.6.0 to allow Xterm.js console work.

5. When you install Proxmox VE Cloud VPS For WHMCS for the first time, you have to rename the 'license_RENAME.php' file.

This file is located in 'modules/servers/proxmoxCloudVps/license_RENAME.php'. Rename it from 'license_RENAME.php' to 'license.php'.

PXC3 3.png
6. In order to configure your license key, you have to edit a previously renamed 'license.php' file.

Enter your license key between quotation marks as presented on the following screen.
You can find your license key in our client area → 'My Products'.

PXC3 4.png
7. In the next step, set up the 'storage' folders as recursively writable.

These folders are available under two locations:

  • your_whmcs/modules/addons/proxmoxAddon/
  • your_whmcs/modules/servers/ProxmoxCloudVps/
PX2 4 1.png

Activation of Proxmox Addon

8. Firstly, you should activate Proxmox Addon.

To do so, log in into your WHMCS and navigate to 'System Settings' → 'Addon Modules'. Find 'Proxmox Addon' and press 'Activate'.

Note: The Proxmox addon version might not match the current version of the provisioning module itself. This is completely normal due to the specific structure of the product.

PXC3 5.png
9. In the next step, you need to permit access to this module.

To do so, click on the 'Configure' button. Tick 'Full Administrator' and press 'Save Changes'.

PXC3 6.png

Configuration of Server

10. Now, we will show you how to configure a new product.

Go to 'System Settings' 'Servers' and press 'Add New Server'.

PXC3 7.png
11. Next, enter your server name, IP address, username and password.

Choose 'Proxmox Cloud VPS' from a dropdown menu and press 'Save Changes'.
The last step is choosing authentication from the 'Authentication' dropdown menu.
Note: Authentication depends on the realm used by the user on a Proxmox VE server.

PXC3 8.png
12. After you have configured your server correctly, you will see the following screen.

You can check connection with the Proxmox Virtual Environment server. To do so, simply press 'Test Connection' as shown on the screen below.

PXC3 9.png
13. It is time to create a server group. To do so, click on 'Create New Group'.
PXC3 10.png
14. Enter name, click on your previously created server, press 'Add' and afterwards 'Save Changes'.
PXC3 11.png

Configuration of Product

15. In order to create and configure a product, go to 'Setup' → 'Products/Services' → 'Products/Services'.

Click on 'Create a New Group'.

PXC3 12.png
16. Enter the product group name and press 'Save Changes'.
PX3 13.png
17. When you have a product group, you are able to create your product.

To create a product, click on 'Create a New Product'.

PX3 14.png
18. Afterward, choose your product group from dropdown menus and point its type, enter your product name and choose 'Proxmox Cloud VPS' as a module name.
Press 'Continue'.

'Product Type' can be set to 'Server/VPS' but nameservers will need to be added later.
If you do not want to fill out nameservers, please select 'Shared Hosting' .

PXC3 15.png
19. Now, go to the 'Module Settings' section and choose your previously created server group from the dropdown menu.

Next, click on 'Save Changes'.

PXC3 16.png
20. Firstly, choose 'Virtualization Type' from the dropdown menu. Then, proceed to the next section which is 'Main Configuration' and set proper values here.

Available virtualization types:

  • KVM
  • LXC

You can also choose how often the bandwidth usage should be calculated.
Afterwards, press 'Save Changes'.
Note: If you choose 'Auto-Node' as 'Default Node', new virtual servers will be created on the least used node.
Note 2: An advanced tool is available for you to automatically manage a node selection with the best count of resources. Read more about Load Balancer.

PXC3 17.png

KVM Virtualization Type

21. The setting of the KVM virtualization type (skip this step if you have chosen the LXC virtualization type).

There are a few sections underlined that need your attention. Please, complete carefully the 'KVM Configuration' , 'Additional Disks' , 'Client Area Features' sections.
As you can see, there are more options available. Look through them and decide which ones you want to modify and adjust to your and your clients' needs.
Do not forget about the 'Network' section where you can determine a model, bridge, and rate limits of the network.
If you are going to allow your clients to manage their private networks, you have to select 'Private Bridge' and set up VLAN TAG Range.
Once you make sure that the configuration is completed, click 'Save Changes'.
Important: Keep in mind that the root password is generated automatically for KVM virtualization upon its creation and reset.
'If you want to set your own password on KVM virtualization, use the Cloud-Init option.

Note: If you want to allow creating VMs based on 'Installation From Archive' remember to enable and select 'Archives' for the clients to choose from.
List of 'Archives' to select from can be found under 'Client Area Features'.

PXC3 18.png

LXC Virtualization Type

22. Setting of the LXC virtualization type (skip this step if you have chosen the KVM virtualization type).

Firstly, complete the 'General' configuration and then proceed to the 'Main Configuration' , 'LXC Configuration' , 'Network' , and 'Client Area Features' sections.
There are more options available so you may easily modify the configuration of your products. Once you complete everything, click on the 'Save Changes' button.

Remember! This virtualization type is supported only by Proxmox VE 4.0. and later.
If you are using the previous version of a Proxmox server, you will not be able to start this virtualization.

PXC3 18 1.png

Finalizing The Configuration

23. Private Network Management - in order to allow clients to manage their private networks, set up the 'Network' and 'Private Network' sections properly.
  • Define 'Private Network Model'
  • Select 'Bridge' as well as 'Private Bridge' from the dropdown menus.
  • Enter ranges for VLAN TAG

Note: Configure these three options for the KVM and LXC virtualization.
If you skip this step, clients will not be allowed to add private networks.

Note2: For SDN Private Network type please refer to Tips section, point 12.

PXC3 20 1.png
24. The next step is setting up the configuration of backups.

Define backup settings in the 'Backup' section through defining 'Storage' and enabling 'Backups Routing' .
Backups routing automatically removes the oldest backup when a new backup is created and the established backup limit is reached.
Additionally, you can limit the time period for storing backups by providing the number of days into the 'Backups Storing Period' field.
Furthermore, you can define the limit of firewall rules and the interface to apply the rules to.
Finish the configuration in the 'Module Settings' tab through pressing 'Save Changes'.

PXC3 20.png
25. Set up server limits to control the size of created servers.
PXC3 21 1.png
26. The final step is generating 'Configurable Options' .

Click on the 'Create Configurable Options' button.
Note: While generating 'Configurable Options', it is advisable to delete the ones you do not use, e.g. the swap option or IPv6 for the KVM virtualization.

PXC3 21.png
Now, you may decide which options should be generated for your product.

Adjust configurable options to your needs and press 'Confirm' .
Note: Please remember that 'Custom Fields' can be edited in the next tab of the product's configuration.

PXC3 21 2.png
27. In the end of the product configuration, you have to add a cron job that is shown below (5 minutes interval suggested).
php -q /your_whmcs/modules/addons/proxmoxAddon/cron/cron.php queue

Do not forget to replace 'your_whmcs' with your WHMCS root location. The cron can be also executed every single minute in order to perform the action more often.
In the Configuration of Addon settings, you will find the personalized URL for the cron on your server as well as more possible crons to set up for execution.

Congratulations! You have just finished the installation and configuration of the module.

Configuration of Addon

28. Proceed to 'Addons' 'Proxmox Addon' 'Settings' 'General Settings' and set up cron jobs listed under the 'Cron' section.

Please note that there are separate cron jobs dedicated to Proxmox VE VPS and Proxmox VE Cloud VPS modules - these jobs are the most important to assure fluent work of the modules, suggested frequency is 5 minutes.
If you are using only Proxmox VE VPS, there is no need to set up the second one and the other way round.
The other ones are responsible for:

  • Users synchronization - run only once
  • VM recovery synchronization - optionally run every 24 hours
  • VM migration synchronization - optionally run every 24 hours or just after the VM migration
  • Tasks synchronization - optionally run every one hour
  • VM names synchronization - run only once
PXC3 35.png
29. Next, under the Cron settings, find the 'Minimum VMID' field.
Fill it in with a number that will be used as an ID of the first VM, the second VM will be asigned the next ID number.
Define the limit of tasks that will be executed with a single cron run, just type in the required number into the 'Tasks Limit' field.

Here it is also possible to turn on 'Debug Mode' if you need to register module logs.

PXC2 35 1.png
30. Adding a new IP address (if you are not using IP Manager For WHMCS).

In order to create a new product, you have to add 'Dedicated IP ' to the 'IP Addresses' list in 'Proxmox' addon module.
To do so, go to 'IP Management' and press 'New IP Addresses'.
Note: You can add IPv4, IPv6 addresses and IPv6 subnets. The process is the same for all types.

PXC3 30.png
31. Start with defining the IP address type, choose among: 'IPv4', IPv6' and 'IPv6 subnet'.

Then, depending on the selected type, provide:

For IPv4 and IPv6 addresses types

  • "Network Address" (eg:
  • "Gateway"
  • "First IP Address" and "Last IP Address" - defines the border from which and up to which of the IP address the generation (including the provided addresses)
PX2 23.png

For "IPv6 Subnet" address type

  • "Network Address" (eg: 2a00:1911:5::/64)
  • "Gateway"
  • 'Number of Subnets"
  • "CIDR"
  • "First IP Address" and "Last IP Address" - defines the border from which and up to which of the IP address the generation (including the provided addresses)

Decide whether the created addresses will be private or not.

PX2 23 1.png
Move to the 'Details' tab. Choose a server from the 'Server' dropdown menu and define which virtualization it should be applied to through selecting it from the 'Virtualization' dropdown menu.

Remember to press 'Confirm' button when ready.

PX2 23 2.png
32. You are now able to create new virtual machines at the product.

The client area of a successfully created product should look similar to the one presented on the screen below.

PXC3 24 1.png

Proxy Installation For Console Connection

A comprehensive guide detailing the installation, update instructions, and operational flow for the Proxmox Proxy application can be found in a dedicated article accessible through the following link.

We encourage you to refer to it for further insight into the Proxmox Proxy application.

The proxy feature can be looked on as an added security boost for your infrastructure.

It hides your Proxmox server so that your clients will not get to know its actual address when connecting to the server via the console in your system.
To work properly, the proxy must be accessible from both the public and private net as clients connect with the proxy from the public net, without the need to connect directly to proxmox.

Proxy must be connected with Proxomx server. To verify if the connection between these two is successful, you may run the following command:
curl -v

where is the node IP address.

Before you begin the process of connecting the console to the server through a proxy, you need to download the proxy application file.

The file can be found under the following link after you have logged in to your ModulesGarden account.

1. Create a new VPS server, which you may run on a Proxmox server.

It is advised to use the KVM virtualization type.

Warning! The used VPS may NOT have any services running, such as: PHP, WebServer (e.g. apache, nginx) or MySQL server.

2. Configure the network on the virtual machine, make sure the network works correctly, to do so you may use the below command:

If everything is fine, assure that basic server security settings have been established.
You may turn off login with a password and turn on login with a key, change the SSH port, set up firewalls etc.

3. Log into the machine on which you are going to set up proxy.
4. Install the docker engine and the docker compose:

5. Upload the application files into a proper directory, eg: /root/proxmox-proxy (create if needed).

Then unzip the files.

6. Move to the following catalog:
cd /root/proxmox-proxy  

Note that the exact directory depends on the previous step where you uploaded te files.

7. Purchase or generate your own SSL certificate, and then use the certificate to overwrite the following files: 'nginx/localhost.crt' and 'nginx/localhost.key' .
8. Find the 'example.env' file and rename it to '.env'.

Then open the just renamed '.env' file and provide a random set of signs to create the database and root passwords: DB_PASSWORD and MYSQL_ROOT_PASSWORD
These data will be automatically used when creating the database.

9. Run the below command:
docker-compose up --build -d
10. Move to docker container:
docker exec -it proxyphp bash 

and run the installation script:

php -q /var/www/html/installer.php install 

When ready, find the API Key and keep it safe, you will need it later on when pasting the data into the Proxmox Addon, see point 12 for details.

11. Next, copy your machine IP address to WHMCS. You may check the IP address using the below command:
ip a

Note: Remember to check the IP address in your virtual machine, not in the proxyphp conatiner.

12. Configure all the required data in the Proxomox addon in your WHMCS.

Move to 'Addons' → 'Proxmox Addon' → 'Settings'. At the bottom you will find section 'Console Proxy' with 'Host' and 'API Key' fields.

Note that the Host field may include either an IP address or a domain. It is extremely important that you paste here the same data as the ones used in the SSL certificate.
The below screen shows an example with an IP address which is not the only correct possible option here.

Provide the necessary data and confirm the changes.

PX3 4 2.png
13. Make sure the server works. In order to do so, please open the address: https://{vmip}:8443.

Remember to replace {vmip} with a valid virtual machine IP address, for example:
When you see {"errors":["Invalid API Endpoint"]} it means that the servers correctly responds.

14. Finally, try to open the noVNC console on your WHMCS Proxmox product to check if the proxy configuration is working properly.
Important: If your certificate expires in the meantime, you will need to buy/generate a new one and follow the below steps:
  • move to the '/root/proxmox-proxy catalog (the directory may differ depending on your setup)
  • replace the nginx/localhost.crt and nginx/localhost.key files
  • run the following command:
docker-compose up --build -d
Note: If you ever encounter an iconcube error while rerunning the 'docker-compose up' command, delete all local docker images related to your docker file using the following command and try again.
$ docker rmi -f $(docker images -a -q)
For instruction on how to react in case an update is required, please refer to the dedicated article including all details on the Proxmox Proxy application.

Cloud-Init (KVM)

Use Cloud-Init to configure the system during installation, first-boot and package change.
Cloud-Init was initially developed to provide early initialization of cloud instances.
Click here to learn more about Cloud-Init configuration.
Note: Cloud-Init functionality is supported for the KVM virtualization only.

Custom Configuration In Addon

Cloud-Init Scripts

The Cloud-Init Scripts section allows adding ready scripts that will be available to choose from in the products' configuration page.
The selected there script will be used while crating the virtual machine.

Press 'Add New' to manually add your script.

PX3 50 0.png
Name your new Cloud-Init script and type in or paste a ready configuration. The configuration must include:
  • Username
  • Hostname
  • Password

Here is an exemplary configuration of a Cloud-Init script. You may alter it to fit your settings and paste into the 'Script' ' field:

hostname: {$domain}
manage_etc_hosts: true
fqdn: {$domain}
user: {$username}
password: {$passwordHash}
  expire: False
  - default
package_upgrade: true
PX3 50 1.png
A full list of available variables related to a Proxmox VE Cloud VPS type of the product/service:
{$} {$} {$vm.password} {$vm.passwordHash} {$vm.ipv4Addresses} {$vm.ipv6Addresses} {$vm.ciuser} {$vm.sshkeys}


  • $model variables - stands for following services
  • $customfields variable - stands for all custom fields that exist in your service

Important: If you want to use a {} sign in your script that has no variable inside, you must place it inside: {literal}{/literal}, for example: '{literal}{"X": "Y"}{/literal}'.
Otherwise, errors will occur.

Manage created Cloud-Init scripts, edit/delete singe scripts or use mass action to delete numerous scripts.
PX3 50 2.png

Server Details

In order to use the Cloud-Init successfully, you need to also provide SSH details to let the script send the IP addresses to the Proxmox server.

Move to Servers → Servers List → Details → Settings, there you will find fields that are responsible for the correct SSH connection.

  • SSH Host
  • SSH Port
  • SSH User
  • SSH Password or SSH Private Key

You also have to select the 'Snippet Storage' to locate the Cloud-Init script in the correct catalog.

PX3 50 3.png

Configuration Of Product

To to allow you clients to use cloud-init you need to enable it in the Proxmox product configuration.

Before you start we recommend learning the details about cloud-init configuration on your Proxmox server - click here for more details.
Once you get familiar with Proxmox cloud-init proceed to the Cloud-Init group of your KVM configuration where you can enable it and set the following:

  • Enable Cloud-Init
  • Default User - provide the username that will be used for the VM instead of using the 'Service Username' field or the default user of the configured image. Otherwise, leave empty.
  • Custom Cloud-Init Configuration - specify custom files to replace the automatically generated ones at the start.
  • Storage - the directory on which the CD-ROM ISO image is stored
PXC3 51 new.png
Among other client area features, find 'Cloud-Init Script' and select the scripts that your clinets will be allowed to choose from when creating a new virtual machine.
PXC3 51 0.png

Configuration Of Proxmox Server

The process of setting up Cloud-Init on the Proxmox server is described here.

Additionally, you can use the following commands that can be useful for debugging.

  • Re-run cloud init scripts
rm -rf /var/lib/cloud/sem/* /var/lib/cloud/instance /var/lib/cloud/instances/* &&
cloud-init init  &&
cloud-init modules -m final
  • Logs
cat /var/log/cloud-init.log
cat /var/log/cloud-init-output.log


Proxmox VE Cloud VPS For WHMCS allows your customers to manage their PVE servers in the WHMCS client area.

At the same time, you can monitor and handle each product from your WHMCS admin area.
You can find here:

  • Module Commands
  • Available Resources
  • Virtual Machines:
    • Import VM
    • Delete VM
    • Migrate VM
      You may enable 'Online' migration (no need to shut down the server before migration) and toggle 'Migration With Local Disks'.
  • IP Addresses
  • User Details
PXC3 26.png

Management of Addon

Servers Management

Servers List

In 'Addons' 'Proxmox Addon' 'Servers' 'Servers List' you can find the configured Proxmox servers.

RAM details:

Assigned - RAM assigned to the server (hosting services only)
Total - full server RAM
Free - difference between Total Server RAM and Assigned RAM

Suspended - number of suspended accounts per size in MB E.g.: (1/500 MB) when there is only one suspended account (occupying 500MB of that account) assigned to Proxmox VE VPS server.

PXC2 28.png
Through pressing 'Edit' icon you will be moved to the server edit page - see point number 10 of Server Configuration.

Press 'More Details' icon and you will get extended information on the selected server. See below for more details.

The 'VMs' tab includes a list of created virtual machines on this server. Take a quick look at information on domain, status, bandwidth and IP addresses.

To view information about a VM, simply press the more info icon.

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Check the node and VMID:
PX2 29 1.png
The next tab contains the list of clusters with information on uptime, CPU as well as CPU, SWAP, memory and disk usage data.

Important: Defined here node limits are strongly connected with the Load Balancer and node prioritization method used by the module to create new virtual machines.

PXC2 29 2.png
Press the "Edit" icon to manage the node and its limits.
  • Allow To Create VM - if enabled, a VM can be created on this node
  • Virtual Machines Number - define the maximum number of VM that can be created on this node
  • Maximum Number of CPUs - set the top limit of CPUs on this single node
  • Maximum Disk Size - set the top storage size allowed on this node
  • Maximum RAM Size - set the maximum amount of RAM allowed on this node
  • Default Storage - select the default storage for the VM created on this node

Setting node limits is crucial as creating virtual machines is largely based on them, once reached, a new virtual machine cannot be created on that node.

PX2 29 3.png
Press 'Node Details' and you will get all the summary and usage graphs:
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VM Cleaner
VM Cleaner allows you to track VMs existing only on your Proxmox server and that are not visible in your WHMCS.
Consequently, you are allowed to sort and delete only those VMs that cannot be managed from your WHMCS.
PXC2 31 1.png
Under this page you can view the list of templates. You can easily convert any KVM VM on your server to a template.

In order to convert a VM, press 'Create Template' button.

PXC2 31 3.png
Next, choose a VM to convert.

Fill out 'Description' field and press 'Confirm'.
Important: Selected VM will be destroyed in the process.

PX2 31 4.png
You may also delete unused templates here. Delete single templates or use the mass action to delete templates in bulk.
PXC2 31 2.png
Server Settings
Here you can define the VM IDs range that will be used for newly created VMs on this server. Please note that to use this feature, you also need to enable the "Use VM Ranges" setting in the product configuration.
Define ID range and save changes.

Note: VM ID range allows you to sort created VMs depending on the server they were created on.
SSH Data - fill out the SSH connection details (Host, User, Posrt, Password or Private Key) to allow to locate the IP addresses on the Proxmox server (Cloud-Init)
Snippet Storage - select the catalog where the file will be uploaded (Cloud-Init)

PXC2 34.png
Node Groups
Under the 'Node Groups' subsection, you can create new groups and assign nodes to them.
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Provide a name of your group and allot preferred nodes from the dropdown menu.
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Now, navigate to the 'Module Settings' of your product and find the 'Load Balancer' section.
Here you can select one or more of the previously created groups.
PX2 34 3.png

VMs List

In 'Addons' 'Proxmox Addon' 'Servers' 'VMs List' you can find details of any Proxmox product.
PXC4 35.png
Press 'More Details' button to get the node and VMID information.
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Recovery VM Lists

In 'Addons' 'Proxmox Addon' 'Servers' 'Recovery VM List' you can details on the created VM.

Run the 'VM recovery synchronization' cron job to create and store full backups of VMs configuration, you can find it at point no 26 of the configuration instructions.
Use the 'Export to File' button to save information in a TXT copy file.

PXC4 36.png
On pressing the 'Details' icon, you will get any information on Configuration, Status and DNS:
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PX2 36 2.png
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Tasks History

Tasks History includes a list o all module tasks with the most crucial details on them.
You may delete single tasks or use mass action button to remove them in bulk.

Run the 'Tasks synchronization' cron job to synchronize the tasks and view all tasks from the server, you can find it at point no 26 of the configuration instructions.

PXC4 37.png

IP Management

In the 'IP Management' tab you can manage the IP addresses of Proxmox products.
You can create both single IP addresses (IPv4 and IPv6 are supported) and IP pools which then can be assigned to created VMs.

Important!: In order to create a virtual machine, you must previously add public IP addresses.
In case you do not own any public IP addresses in the database, you must previously enable the "cloud-init" option, only then it will be possible to create a VM with a private IP address.

PXC3 30.png
When you are creating a new IP address or a pool, you may define:
  • private/public address
  • servers or nodes that will use them
  • virtualization types (different VMs will use different IP pools)

Note: please go back to point 31 of the addon configuration to learn more details about adding IP addresses.

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IP Logs

The 'IP Logs' includes the history of the IP addresses that were removed by the admin and which are again available in the proxmox addon IP Management pool.

Keep in mind that only addresses that were automatically added when creating the VM. Removed IP addresses, that were the manually assigned, are not logged here.

PXC2 30 0.png

IP Manager Integration

Owing to the integration with IP Manager For WHMCS, you are able to easily create subnets with IP addresses, and assign them to the desired products.

By activating the IP Manager submodule, settings concerning IP addresses such as 'Configurable Options' and 'Default Options' will be ignored by Proxmox VPS.
Note: This integration works for LXC and KVM virtualization types.

1. Proceed to the IP Manager For WHMCS → Subnets tab in order to prepare the IP addresses subnet for Proxmox VPS For WHMCS.
2. Edit the previously created subnet, and create a custom field 'MAC Address' with a desired MAC address at each IP address in the subnet.
Note: Setting up the MAC address is optional and can be skipped.
More details about creating custom fields can be found here.

PX 49.png
3. Afterward, create a new configuration, and assign the previously created subnet to it.
Note: Multiple subnets can be assigned to a single configuration.

4. Now, link the configuration with Proxmox VPS product via a product, server or configurable option.
On the following screen, we have carried out the linking via a product.

PX 50b.png
4. When Proxmox starts creating a virtual machine, it retrieves the assigned IP address to the service and assigns it directly to the virtual machine.

It is possible to add VLAN Tag Custom Filed in the very same way as the "MAC Address" field.
The only element you need to change is the custom field name, which should be 'Tag' in this case.

PX 49 1.png

General Settings

Load Balancer

Load Balancer is an advanced tool that allows smooth rotation between nodes to find the most preferable one and create virtual machine on it.

Set the weight of the resource that will prioritize its selection when sorting the Nodes according to the free resources.
Note: The lowest possible weight is 1. You cannot set for example 0,5.

To learn more about nodes and their allowed limits please go back to the Clusters section of this documentation.

PX2 30 4.png
In order to use Load Balancer you must previously enable it in the product's configuration:

Define the behavior of the tool:

  • On Upgrade - select action to perform:
    • None - if selected, no action will be triggered
    • Block - the upgrade process will be blocked as there are insufficient resources on the node
    • Migrate - the upgrade process will be performed after the previous migration of the VM to a server with sufficient free space
  • Shutdown VM on Upgrade
  • Stop VM If Shutdown Fails
PXC3 30 5.png
Node Prioritization Method
Let us take a look at how the sorting process works and the rules that it obeys.

Let's take exemplary weights for each resource just like presented on the screen above.

VMs Number Weight: 1,5
CPU Weight: 2
Disk Weight: 4
RAM Weight: 2,5

Disk Weight with the highest weight which means it has the highest priority and VMs Number Weight as the least crucial factor on a given node.

In our situation, there are four nodes created, named A, B, C, D with current resources as shown below:

Node A (Free Ram: 60%, Free CPU: 20%, Free Disk Space: 50%, Number of VMs: 5) 
Node B (Free Ram: 30%, Free CPU: 70%, Free Disk Space: 40%, Number of VMs: 10)
Node C (Free Ram: 90%, Free CPU: 50%, Free Disk Space: 20%, Number of VMs: 20)
Node D (Free Ram: 80%, Free CPU: 60%, Free Disk Space: 70%, Number of VMs: 15)

The next step is sorting the nodes according to each resource, by assigning them corresponding priorities from 1 to 4.
The higher the priority, the more free resources available.

Priority Free Ram Free CPU Free Disk Space Number of VMs
4 Node C Node B Node D Node A
3 Node D Node D Node A Node B
2 Node A Node C Node B Node D
1 Node B Node A Node C Node C
Now, the final calculation to sort nodes according to free resources, taking into account previously defined weights, is performed

Sorting nodes is based on the following calculation method:

Final Node Priority = (RAM Priority x RAM Weight) + (CPU Priority x CPU Weight) + (Free Disk Priority x Disk Weight) + (No. VMs  Priority x VMs Weight)

The results for nodes A, B, C and D (with weights and sorting priority) are following:

Node A: (2 x 2,5) + ( 1 x 2 ) + ( 3 x 4 ) + ( 4 x 1,5 ) = 25
Node B: (1 x 2,5) + ( 4 x 2 ) + ( 2 x 4 ) + ( 3 x 1,5 ) = 23
Node C: (4 x 2,5) + ( 2 x 2 ) + ( 1 x 4 ) + ( 1 x 1,5 ) = 19,5
Node D: (3 x 2,5) + ( 3 x 2 ) + ( 4 x 4 ) + ( 2 x 1,5 ) = 32,5

As you can see, Node D has got the highest priority value with a result: 32,5.
It will be selected by Load Balancer to create a new VM there, to migrate or upgrade an existing VM if its current node does not have sufficient resources.

The above described calculations are performed every time, a 'Create' or 'Upgrade' actions are executed based on the current usage of resources on available nodes.

Important: In case a given client already has an existing VM on a node, this very node will NOT be taken into account during the prioritization of resources process.
This is due to security measures to make sure, that in case of failure of this node, the client will still have access to the other VM server, created on another, working node.
However, if this client has VMs on every node already, all of them will be taken into account during the selection prioritization process again.

If you decide to use the 'Load Balancer' tool, define the resource weights to adjust their prioritization of nodes according to your needs.

Global Limitations

  • 'VLANs Limit' - enter the maximum number of allowed VLANS per customer
  • 'Default Limit of Backup Tasks Per Node' - put a global limit on the number of allowed tasks to create backups per node.
    This general limit may be overwritten per single node in the cluster settings section at: Addon → Servers → Server Details → Edit Cluster → Tasks Limit
PXC3 30 5 0.png

Task Settings

This setting can help you stay informed about failed tasks. When a threshold of task retries is reached a notification email message will be sent out.

You can set up a three-tier notification system with separate email contents.

PXC3 30 5 1.png
The default email templates include:
  • Task name
  • Task ID
  • Client ID
  • Service ID
  • Product/Service information
  • Domain
  • Error Message

You can pick different email templates from the dropdown fields in the tasks settings or edit the default templates by navigating to 'System Settings' 'Email Templates'.

PXC3 30 5 2.png

Admin Area Features

The 'Admin area Features' section includes a list of all possible features that can be activated and then available or not for the admin under the product's details.
Below you can find a list of features dedicated to:
  • Proxmox VE Cloud VPS
    • Virtual Machines
  • Proxmox VE VPS
    • Start
    • Stop
    • Reboot
    • Shut Down
    • Reinstall
    • Spice Console
    • noVNC console
    • Xterm.js Console
    • Information
    • IP Set
    • Graphs
  • Both
    • Available Resources
    • IP Addresses
    • Migrate
    • User Details
    • Reconfigure Network
PXC3 30 6.png

Scheduled Backups Templates

In this section, you can create scheduled backup templates, that can be included in your products by default.

Preparing a template means there will be no need for the clients to set up their own scheduled backups and their virtual machines will be backed up on a predefined schedule from the get-go.
Start by creating and naming a scheduled backups template.

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Once the template has been created, backup tasks can be included in it.
Click on the 'Create Task Template' button.
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Configure the backup schedule as you see fit, you can create as many task templates in the scheduled backups template as you need.
  • Start Time - The time when the task for a backup will be issued. Make sure the time you input meets the format: 24-hour time notation with the zeroes included. For example, 07:05, 20:30
  • Day of the Week - The days the backups should take place each week.
  • Compression type - Compression method to be used.
  • Backup Mode - Decide on the backup mode.
  • Send Email Message - Decide if an email notification about the backup should be sent always, never, or only on failure.
  • Recipients - include the email addresses you would like the notification to be sent to. Separate each address with a comma.
    You can include the {clientEmail} variable to include the client's default address in the list or leave the field empty to only send the notification to that default address.

Click on 'Confirm' when ready.

PX3 30 6 3.png
You can add more task templates if you wish, edit or delete them.
PX3 30 6 4.png
The scheduled backup template you create can be included as the default backup schedule of your products.

The 'Scheduled Backup template' field can be found in the product's module settings under 'Backup'. You can also select the 'Scheduled Backup Email' under 'Client Notifications'.
Finally, you may allow your clients to change their scheduled backups by enabling the 'Backup Schedule' option under 'Client Area Features'.

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Firewall Templates

Proxmox VE VPS For WHMCS allows you to prepare firewall templates for your clients. Those templates can be added to the product's configuration and will be applied in virtual machine creation.

Start by clicking on the 'Create Template' button and naming your new template.

PX3 30 6 6.png
Configure the firewall options according to the needs of your clients. Make sure to click on 'Submit' to save the changes.
PX3 30 6 7.png
Next, click on the 'Add Rule' button and add as many firewall rules as you need.
PX3 30 6 8.png
The last step is to add the firewall template to a product. Navigate to your product's module settings and find the firewall section.
PX3 30 6 9.png

Operating Systems Groups

Create Operating Systems Groups in the Proxmox Addon to allow clients to reinstall their virtual machines using the virtual machine templates that you allow.

In this section, the process of creating operating systems groups will be showcased.
Navigate to 'Settings' 'Operating Systems Groups' and create a new group and name it.

PX3 30 6 10.png
Next we need to add templates that we want to include in this group.

Click on the 'Add Template' button and type in the name of the template that you want to include.
It is crucial the name you input in the following window does not contain any typos.
If you are not sure how your virtual machine template is named exactly. You can always check the list at a product module settings → Client Area Features → OS Templates.

PX3 30 6 11.png
Add all the templates you want to include in the group.

When finished all that remains is to add the group to the product's configuration.
Note: Keep in mind that clients will not be able to transfer from one group to another after the creation of the initial virtual machine, and will only be able to pick templates from the same group when reinstalling.

PX3 30 6 12.png


Under the 'Tasks' tab, you can check a list of performed tasks along with their status.
Moreover, you are granted the possibility to check 'Info' for a particular task, run the task again by clicking the 'Run Task' button, or delete it.
PXC4 30 5.png


Proxmox VE VPS For WHMCS features a dedicated widget that displays crucial information about the module right in the WHMCS dashboard.

The information displayed includes:

  • Faulty VM Deployments - a list of virtual machines that failed to be created.
    • Related Domain
    • Virtual Machine's ID
    • Related Task
    • Message
  • Failed Tasks - a list of tasks that failed to complete
    • Job ID
    • Related Customer
    • Related Task
    • Message
  • Cluster Remaining Resources - a list of resources still available
    • Server Name
    • Remaining Virtual Machine slots
    • Remaining IPv4 Addresses
    • Remaining IPv6 Addresses
    • Remaining IPv6 Subnet
  • Node Resources - a list of the nodes available
    • Server Name
    • Node
    • Virtual Machine Limit

Each list can be hidden by disabling it in the addon's general settings.
Make sure to enable the widget in the 'Show/Hide Widgets' menu.

PX3 32 2.png
You can change the height of the widget by editing the 'widget.tpl' file located in '/whmcs/modules/widgets/ModulesGardenProxmoxAddon/templates'.

Find this code fragment:

        height: 300px;

and change it to include max-height: none !important;, like this:

        height: 300px;
        max-height: none !important;

Now you will be able to adjust the widget's height by editing the height: value; from the default '300px' to any value that fits your needs.

Client Area

Client area interface of Proxmox VE Cloud VPS For WHMCS allows your clients to create their own virtual servers.

They can also view resources used and manage existing virtual machines.

PXC3 24 1.png

New Virtual Machine

In order to add a new virtual machine, press the 'Add New Virtual Machine' button.
PXC4 38 1.png
Now, provide a name of your new virtual machine and choose a proper type from the dropdown menu.

Moreover, you can add 'New Virtual Network' and 'New Additional Disk' here. Confirm creation through pressing 'Save Changes'.
Note! Data to be filled in may differ according to which type LXC or KVM you have chosen.

PXC4 38.png
You can now easily 'Edit' (1) or 'Delete' (2) your virtual machine.

You can find information about managing your virtual servers in next section.

PXC4 39.png

Virtual Network Management

Move to 'Virtual Networks' section to add, delete and edit your virtual networks.

Please keep in mind that this option must be enabled by administrator in your product's 'Module Settings' previously and a private IP address must be added in the Proxmox Addon.
Otherwise you will not be able to add any virtual network successfully.
If you have reached the set by the admin limit of allowed networks, the button will not be active either.
Moreover, you can also 'Edit' (1) or 'Delete' (2) existing private networks.

PXC4 60.png

Templates Management (KVM Only)

Once you press 'Templates', you will be redirected to a site where you will find the list of currently created templates along with their details and access to basic actions.
PXC4 62.png
You may edit or delete existing templates. To add a new one, simply press 'Add Template' button.

OS templates do not consume any resources such as CPU sockets, memory etc.
Important! When you convert server into a template, it is consumed in the process! There is no possibility to revert it back.

PXC4 63.png
Select server from dropdown menu and type in its short description. Save changes when ready.
PXC4 64.png

Client Area - VM Management

The client area interface of your virtual machine should look like the one on the screen below.

As you can see, the control panel contains useful options needed for managing VPS.
The module allows your customers to easily boot, stop, reboot, and shut down their VM by pressing a specific button.
Clients can also upgrade servers and access VNC, SPICE, and noVNC consoles.
Any additional tools are described in detail below.

PXC4 41.png

noVNC Console

noVNC console allows your clients to connect with their server in the easiest possible way.
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SPICE Console

Spice console enables you to connect with virtual machine using SPICE.

Note: Your client needs to download and install client side SPICE application in order to connect with VM.

PX2 40.png

Xterm.js Console

Xterm.js console enables you to connect to virtual machine using Xterm.js.

You must update the scripts on Proxmox v2.6.0. To do so open folder: UploadOnProxmoxServer/5.2-10 and upload content on all your proxmox servers.

PX2 40 1.png

Client Area - Additional Tools


The 'Reinstall' section is divided into two parts. There are 'OS Template' and 'ISO Images' subsections.

Note: The ISO images can only be used for the KVM virtualization type, while VM templates can be used either for KVM or LXC.
Additionally the new OS password for the KVM OS reinstallation will be set based on the previous service password while for the LXC user can define it before the new installation.

PXC4 38 5.png
Remember to gain your clients access to selected reinstallation types in the 'Client Area Features' of the product's configuration.
PXC4 38 4.png


Backups List

To create a single backup, proceed to 'Backups List' section and click 'Create Backup' .
PXC4 47.png
Now choose 'Compress' and 'Mode' from dropdown menus.

Afterwards, press 'Add' button.

PXC4 48.png
To restore VM from a backup simply press 'Restore' and then click 'OK' button in a popup window to confirm.
PXC4 49.png

Backup Jobs

By pressing 'Backup Jobs' in the client area, you will be carried to a backup jobs management page.

To add a new backup job press 'Create Backup Job' .

PXC4 50.png
Now, define backup time, mark days to run it and choose 'Compression' and 'Mode' from dropdown menus.

Next, press 'Add' button. You may also enable email notifications here.

PXC4 51.png

Available Resources

NExt to the 'Backup Jobs', there is a table with information on 'Available Resources'.
You will find there data on limits put on backups:
  • Backup Size: used/allowed
  • Backup Files: used/allowed

Next to the statistics there is a comfortable and easy to read progressive chart to illustrate the usage. If size is set to 'Unlimited', the chart does not show any progress.
Once you have reached the limits, the option to create new backups is blocked. .

PXC4 51 0.png


Under 'Graphs' page, a client can find graph with CPU usage, memory usage, network traffic and disc I/O.

They can also switch the timeline of the graphs by choosing it from a dropdown menu pointed on the following screen.

PXC4 46.png


All changes of VM status are listed in the 'Tasks' section.

Additionally, each access to the VM through SPICE console is shown here.

PXC4 52.png


Under the 'Network' section, you will find 'Virtual Network' and 'Interfaces' subsections.

Depending on the settings of the product (private network is used), they can also create/remove them. This feature is optional.

PXC4 53.png


Use snapshots to remember the contents of virtual machine memory current state. You may use them later to restore the VM settings.
PXC4 52 1.png
It is also possible to set up 'Snapshot Jobs' where snapshots can be created according to your preferences (daily or hourly). Click on 'New Job' in order to add a new snapshot job.
PXC3 52 2.png
As you complete the form, remember to fill in the 'Name' field without spaces or special characters- only capital letters and numbers are allowed here.
PXC3 52 3.png


Firewall Rules

Owing to 'Firewall' page, your clients can set up firewall rules and enable security group for theirs servers from your WHMCS client area.

As you can see, you can easily modify and remove previously added rules and security groups.

PXC4 53 1.png
You can add a firewall rule in two ways. Both of them require choosing direction, action, interface, source and destination.

The first way (red) is by choosing macro from a 'Macro' dropdown field.
The second way (blue) consist of choosing protocol and filling source and destination ports out.
Additionally, you can enable rule and add a comment to it.
Press 'Add' to create a rule.

PXC4 53 2.png
Inserting a security group consists of choosing security group and interface on which group has to be used.

Additionally, you can enable security group and add a comment to it.
Click 'Add' to use the security group.

PXC4 53 3.png
Additional Actions:
  • Download Rules - use this option to simply create a backup, once pressed, a file will be downloaded
  • Restore Rules - restore any of the previously created backups created. Select one of the previously downloaded files with rules
PXC4 53 01.png
You may manage the hierarchy of rules on the list. In front of each rule, you can find its 'Position' marker.
The higher the rule is on the list, the higher priority the rule has assigned.You may change the rule position using the 'Move up/down' arrows.
PXC4 53 0.png

Firewall Options

Under this subsection, you can easily view and edit firewall options.
PXC4 53 4.png

Disks (KVM only)

View and manage hard disk within defined limits, add new one or remove additional disks if you wish.
PXC4 52 2.png

IP Manager Integration

Owing to the integration with IP Manager For WHMCS, you are able to easily create subnets with IP addresses, and assign them to the desired products.

By activating the IP Manager submodule, settings concerning IP addresses such as 'Configurable Options' and 'Default Options' will be ignored by Proxmox VPS.
Note: This integration works for LXC and KVM virtualization types.

1. Proceed to the IP Manager For WHMCS → Subnets tab in order to prepare the IP addresses subnet for Proxmox VPS For WHMCS.
2. Edit the previously created subnet, and create a custom field 'MAC Address' with a desired MAC address at each IP address in the subnet.
Note: Setting up the MAC address is optional and can be skipped.
More details about creating custom fields can be found here.

PX 49.png
3. Afterward, create a new configuration, and assign the previously created subnet to it.
Note: Multiple subnets can be assigned to a single configuration.

4. Now, link the configuration with Proxmox VPS product via a product, server or configurable option.
On the following screen, we have carried out the linking via a product.

PX 50.png
4. When Proxmox starts creating a virtual machine, it retrieves the assigned IP address to the service and assigns it directly to the virtual machine.

It is possible to add VLAN Tag Custom Filed in the very same way as the "MAC Address" field.
The only element you need to change is the custom field name, which should be 'Tag' in this case.

PX 49 1.png

Importing VM

Our module allows you to easily import VM into your cloud product.

To do so, press 'Import Virtual Machine' as shown on the following screen.

PXC3 45 3.png
Afterwards, choose the preferred virtual machine from the dropdown menu and complete the 'Password' field..

Confirm importing through pressing 'Save Changes' button.

PXC3 45 4.png

Configurable Options

When you successfully set up a product, your clients can order it by choosing from the default configurable options.

Note! If automatically generated configurable options do not seem to fulfill your clients needs, you can edit them using this guide.
If you decide to set up pricing per server resource ordered, you can find instruction to proceed here.


Management of Billing

When you combine Proxmox Cloud VPS For WHMCS with Advanced Billing For WHMCS, you will be able to set up additional billing options.

Module allows you to charge your customers basing on the server resources used by them.

With Advanced Billing For WHMCS module, you can also display your customers current server resource usage and their cost.


1. Operations performed on the virtual servers are not executed immediately. Give your Proxmox Virtual Environment some time for processing the request and execution of operation.
2. Multiple physical Proxmox servers can be joined into one cluster.

When they are joined into one cluster, you can access all of them by connecting to any of them.
While auto-node creates new VM on the server(node) with the most free resources, server-node creates VM on the server(node) which IP address it has (WHMCS's server configuration).

3. OS Templates are not automatically downloaded while configuring a product.
For each virtualization type, templates are downloaded from the Proxmox server depending on which one of them they are generated for.
4. To name the location accordingly to your needs, within the module change the lang into:
$_LANG['node_X']='Your friendly name for node_X';
5. When PAM authentication is used it is necessary to create a client first in order to change the password correctly. Read more about it here.
6. As this module supports templates system, any changes made in the module's templates files will be saved after the upgrade process.
7. If you currently use the module in the 2.3.2 version or previous, and would like to migrate to Proxmox VE V5.X, you need to update the files on your Proxmox server to the new version from the 'UploadOnProxmoxServer' folder.
8. You can use the 'IPSet IP Filter' option for firewall to prevent IP spoofing. Click here to read more about IP Sets.
9. 'Minimum Network Rate Limit' option allows you to change the previously entered 'Network Rate Limit' value to a new one if the current 'Bandwidth Limit' is already exceeded.
Note that the 'Bandwidth Limit' can also be used for WHMCS overage billing calculation as described here.
PXC2 70 1.png
10. Configuring 'Default User' per template. Move to 'Proxmox Addon' → 'Servers' → 'Server Details' → 'Templates' → 'Create/Edit Template'.

You may assign a default user to a single template, that user will be automatically assigned to the newly created VM.

11. Creating a VM without any CPU limits. In the module settings, under 'Server Limits', set up 'CPU Limit' to: 0-1. Next, make sure that all values under 'CPU Priority' section are cleared.
12. SDN Support:

The module supports SDN private network type. It is possible to create virtual networks (vnets) at datacenter level thanks to the Software Defined Network (SDN).
To learn all the details on SDN in proxmox, please navigate to the official proxmox documentation.

In the module, the whole configuration of SDN is located in 'Module Settings' → 'Private Network' section. There you will find dedicated options, these are:

  • Private Network Type
  • SDN Zone
  • SDN TAG Range Minimum Number
  • SDN TAG Range Maximum Number
PXC2 32.png

Update Instructions

1. Essential guidance through the process of updating the module is offered here.

Ensure successful completion of the module update by carefully following each step, thereby preventing data loss or any unforeseen issues.
Additionally, you will find a current list of supplementary actions necessary for a smooth update process there.

2. To upgrade the module from Proxmox Cloud For WHMCS to Proxmox VE Cloud VPS For WHMCS correctly, you need to follow these steps:
  • Delete all old files of 'Proxmox VE Cloud For WHMCS' from:
  • Delete the previous cron job:
  • Add new cron jobs (A full list of cron jobs can be found here):

5-minute interval suggested for:

 php -q your_whmcs/modules/addons/proxmoxAddon/cron/cron.php queue 
 php -q your_whmcs/modules/addons/proxmoxAddon/cron/cron.php update-server-usage 

1-hour interval suggested for:

 php -q your_whmcs/modules/addons/proxmoxAddon/cron/cron.php rrddata 
  • Now, upload new files of 'Proxmox Cloud VPS For WHMCS' to the main WHMCS directory.

Important! Please remember to reissue the licence in the client area after uploading new files to the main WHMCS directory.
If you do not do this, you will get a notification about the wrong licence, and the upgrade process will not succeed.

  • Finally, proceed to the configuration of your server and change the module type to Proxmox Cloud VPS
    and the 'Module Name' to Proxmox VE Cloud VPS in the 'Module Settings' tab of your product configuration.

Upgrade Guide

Seeking a solution that offers greater flexibility, customization tailored to your precise needs, and unrestricted availability?
There is an option that not only proves to be cost-effective in the long run but also includes prioritized support services, making it a truly valuable investment.

Opt for the Open Source version of your Proxmox VE Cloud VPS For WHMCS module to unlock these benefits.
Simply click on either the Get Source Code or Upgrade To Lifetime button found on the product's page in our client area to complete the one-step upgrade process, with a dedicated discount already applied.

Follow a comprehensive guide covering the transition process, the advantages it brings, and step-by-step instructions on what to do next after the order has been successfully finalized.

Common Problems

1. When you have problems with connection, check whether your SELinux or firewall does not block ports.
2. Error 'Could not create PVE2_API object' during connecting via noVNC console.

Reason: User account does not have permission to access noVNC console.
Solution: Proceed to product's 'Module Settings' tab and check whether selected user permission grant right for noVNC console.
Afterwards, proceed to client's hosting and run 'Change User Role' on it.

3. Error 'This connection is untrusted' during connecting via noVNC console.

Reason: Your certificate is not valid.
Quick Solution: Your client needs to add Proxmox address to certificate exception list.
Best Solution: Configure valid certificate.

4. Blank page during connecting via noVNC console.

Reason: You have not uploaded the additional files on the Proxmox server.
Solution: Open 'UploadOnProxmoxServer' and upload content of proper version on all Proxmox servers into the '/' path.

5. Error 'Function "ssh2_connect" does not exist. Please Install SSH2 PECL before you start using the script.'

Reason: You have not updated php.ini file
Solution: After SSH2 PECL installation be sure that you have updated php.ini files for CLI and webserver.

6. After you have updated your Proxmox Cloud For WHMCS to Proxmox Cloud For WHMCS V2.0.0, it is always required to save your product configuration in module settings again.
7. If you see an error: 'Invalid VLAN TAG Range' configuration or other when trying to add a new private network, please make sure you have completed all required options in Module Settings.
These are: 'Network Device' → 'Private Bridge', 'VLAN TAG Range From' and 'VLAN TAG Range To'.
8. 'OS Architecture Type ' option for LXC virtualization type is currently not supported as it not implemented in Proxmox itself.
We are sorry for inconvenience.
9. Error: "Only root can set 'serial0' config".

Solution: Turn off the Xterms.js console in the product configuration.

10. Error "Parameter verification failed. ([maxfiles] - Only root may set this option.)"

Reason: User is other than "root" or server authentication is set to Proxmox VE
Solution: In server configuration, set the root details and select PAM as the authentication type.

WHMCS Modules
WHMCS Widgets
cPanel Modules
Proxmox VE Cloud VPS For WHMCS