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

Extracted files in your WHMCS directory should look like this:

The file is located in '/yourWHMCS/modules/servers/GoogleCloudVirtualMachines/license_RENAME.php'. Rename it from 'license_RENAME.php' to 'license.php'.

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

This folder is available at '/yourWHMCS/modules/servers/GoogleCloudVirtualMachines/'.

Underneath, you will find instructions where to find them.

Click 'Go to APIs overview' as presented below.

Important! Once you proceed, the file with your private key will be downloaded to your computer.
Remember to store this file in a secure place because it is not possible to regain the key when the file is lost.

Now, provide your Google Cloud project ID as 'Username' and paste the content of the previously downloaded file with your key details in the 'Access Hash' field.
Finally, check the 'Test Connection' and save the changes.

Click on 'Create a New Group'.

To do so, first click on 'Create a New Product'.

The module should automatically save and reload the settings. If not, click on the 'Save Changes' option manually.

• Configuration:
  • Region - is a particular geographical location where you can host your resources. Each region consists of one or more zones.
  • Hostname Prefix - you can provide a hostname prefix.
  • OS Distribution - choose a preferred OS distribution from the dropdown menu.
  • Disk Type - Standard persistent disks are efficient and practical for handling sequential read/write operations while SSD persistent disks are dedicated to enterprise applications
    and high-performance database needs that demand lower latency and more IOPS.
  • Zone - is a location within a region. Once the 'Region' is selected, then you can define a zone.
  • Machine Type - you can choose from many predefined machine types in each machine type family.
  • Image - select a preferred OS image.
  • Disk Size - provide the disk size in GB.
  • Tags - you may fill in network tags separated by commas or spaces.
  • User Data - choose the 'cloud-config' file or 'Bash' script which may be used to configure the virtual machine on the first boot.
• Client Area Features:
  • Snapshots - enable if you want clients to access the 'Disk Snapshots' section in the client area.
• Network:
  • Network - choose a network.
  • Network Tier - there are two tiers available, 'Standard' and the ' Premium' one. More about differences between them can be found here
  • IPv4 Address - you can enable the IPv4 Address.

Configurable options can be used by your clients to select each virtual machine parameters individually during order placement.
Otherwise, if configurable options are not defined, then the fixed parameters specified in the earlier configuration will be used instead.
If you decide to use configurable options, press on the 'Create Configurable Options' button.

Your SSH key must be an RSA key with a key size of either 2048 bits or 4096 bits.
If you would like to limit the possibility of entering the key e.g. only to the 'ssh-rsa' format, you can use the regular expression in the validation field, such as:

#ssh-rsa AAAA[0-9A-Za-z+/]+[=]{0,3}( [^@]+@[^@]+)?# 

Remember that API allows such action only once, during the initial VM creation.
Note: If you disable the 'Show on Order Form' option, a client will not be able to provide SSH Key while placing an order.

This includes supervision of such features as:

1. Configurable options which enable you to view the chosen server details
2. Module commands to allow easy and quick management of the server
   
3. Service actions, including: Start, Stop and Reboot the server
4. Instance details that provide the current status, resources and options set.
5. Network Interface section that informs about the chosen network, private and public IPs.
6. Disk section that gathers all the information about the disk.

At this moment you also have to provide the SSH key. Note that this key should be in one of the OpenSSH standard formats which are supported by API, e.g. ssh-rsa.

1. Firstly, manually create an order for your customer in WHMCS. Choose a client and in the summary, view click on the ' Add New Order' button. Next, select a 'Product/Service' and press 'Submit Order' .
What is important, do not perform the 'Create' action. The status has to remain as 'Pending' .
More info about placing orders can be found here
2. Proceed to the newly created product's card in your admin area. Find the following empty fields:

• Instance ID
• Region
• Zone

The above-mentioned information has to be consistent with the data from your Google Cloud panel. Now, complete these fields as presented below.
Important! Remember to make sure that the format of the provided data is compatible with the format supported by the module. You can preview it for another product of the module you have already created and enter it in a similar way.
If you completed the required data, now change the status from 'Pending' to 'Active' and 'Save Changes' .

The module allows your customers to easily start, stop and reboot their server instance through pressing the appropriate buttons.

Keep in mind there is a quick and easy option in our client area that will let you upgrade the license of your module to an open source version at any time - and at a lower price!
To take advantage of it, simply use the License Upgrade button located on the product's page and a discounted invoice will be generated automatically.