Windows Guest Environment for Google Compute Engine
This repository stores the collection of Windows packages installed on Google supported Compute Engine images.
Table of Contents
- Instance Setup
- Metadata Scripts
- Packaging and Package Distribution
The Windows guest environment is the Google provided configuration and tooling inside of a Google Compute Engine (GCE) virtual machine. The metadata server is a communication channel for transferring information from a client into the guest. The Windows guest environment includes a set of scripts and binaries that read the content of the metadata server to make a virtual machine run properly on Google Compute Engine.
The agent is configurable through metadata or a local config file.
The agent handles creating user accounts and setting/resetting passwords.
The agent uses IP forwarding metadata to setup or remove IP routes.
- Only IPv4 IP addresses are currently supported.
Windows Failover Cluster Support
The following fields on instance metadata or instance_configs.cfg can control the behavior:
enable-wsfc: If set to true, all IP forwarding info will be ignored and agent will start responding to the health check port. Default false.
wsfc-agent-port: The port which the agent will respond to health checks. Default 59998.
wsfc-addrs: A comma separated list of IP address. This is an advanced setting to enable user have both normal forwarding IPs and cluster IPs on the same instance. If set, agent will only skip-auto configuring IPs in the list. Default empty.
Main code can be found here: wsfc.go
instance_setup.ps1 is configured by GCE sysprep to run on VM first boot.
The script performs the following tasks:
- Set the hostname to the instance name.
- Runs user provided 'specialize' startup script.
- Activates Windows using a KMS server.
- Sets up RDP and WinRM to allow remote login.
Packaging and Package Distribution
The guest code is packaged in GooGet packages and published to Google Cloud repositories.
We build and install the following packages for the Windows guest environment:
google-compute-engine-windows- Windows agent executable.
google-compute-engine-sysprep- Utilities for running sysprep on new Windows virtual machines.
cmdfiles to run startup and shutdown scripts.
google-compute-engine-powershell- PowerShell module for common functions used by other packages.
google-compute-engine-auto-updater- Automatic updater for core Google packages.
google-compute-engine-vss- Google Compute Engine VSS agent and provider
The package build specs are published in this project.
To setup GooGet and install packages run the following commands in an elevated PowerShell prompt:
Download and install GooGet:
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 Invoke-WebRequest https://github.com/google/googet/releases/download/v2.13.0/googet.exe -OutFile $env:temp\googet.exe & "$env:temp\googet.exe" -root C:\ProgramData\GooGet -noconfirm install -sources https://packages.cloud.google.com/yuck/repos/google-compute-engine-stable googet Remove-Item "$env:temp\googet.exe"
On installation GooGet adds content to the system environment, launch a new PowerShell console after installation or provide the full path to googet.exe (C:\ProgramData\GooGet\googet.exe).
google-compute-engine-stable repo, this must be done in a new console if you just installed GooGet:
googet addrepo google-compute-engine-stable https://packages.cloud.google.com/yuck/repos/google-compute-engine-stable
Install the core packages
googet -noconfirm install google-compute-engine-windows google-compute-engine-sysprep google-compute-engine-metadata-scripts google-compute-engine-vss
Install optional packages,
googet -noconfirm install google-compute-engine-auto-updater
You can view available packages using the
googet available and installed
packages using the
googet installed command. Running
googet update will
update to the latest versions available. To view additional commands run
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All files in this repository are under the Apache License, Version 2.0 unless noted otherwise.