[ABANDONED] A ruby client library providing an interface to libvirt via FFI.
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WARNING: This gem is abandoned. It will not be worked on anymore. Please use the official libvirt libraries.

Libvirt Ruby Library

A ruby client library providing the raw interface to libvirt via FFI. The library is backwards compatible to libvirt 0.6.0. The library consists of two namespaces:

  • Libvirt - All objects under this namespace provide a very Ruby-like object oriented interface above the raw libvirt API. This is the recommended way of using libvirt with Ruby. These objects are mostly compatible with the FFI layer as well (you may pass in a Connection object in place of a virConnectPtr for example).
  • FFI::Libvirt - A direct interface to the libvirt API using FFI. This is for the power players out there who need extremely customized functionality, with the tradeoff being that it is more complicated to use and you must manage your own pointers.

Project Status

Functional beta. The project has been initially released with complete FFI coverage and extensive coverage with the nicer Ruby objects. More functionality will constantly be developed. If you'd like to see a specific feature come first, please open an issue.


This library will be a gem. First, you need to install libvirt, using your OS's respective package manager. On OS X the recommended way is using homebrew:

brew install libvirt

After installing libvirt, install the gem:

gem install libvirt

If you'd like to try the bleeding edge version of libvirt-rb, we try to keep master pretty stable and you're welcome to give it a shot. To do this just clone out the repository and run this from the working directory:

rake install


For detailed usage and examples, please view the documentation. But a small example is shown below so you can get a feel for how the library is meant to be used:

require 'libvirt'

conn = Libvirt.connect

# Output some basic information
puts "You are connected to: #{cxn.hypervisor}"
puts "Hypervisor version: #{cxn.hypervisor_version}"
puts "Libvirt version: #{cxn.lib_version}"

# Output the names of all the domains
conn.domains.each do |domain|
  puts "Domain: #{domain.name}"

# Start a domain and stop another

# Create a new domain (assuming `xml` is defined somewhere)
# to an XML string
new_domain = conn.domains.create(xml)
puts "New domain created: #{new_domain.name}"

As I said earlier, please read the full usage page in the documentation and also check out the examples in the examples/ directory.


To contribute to the project, fork it and send me pull requests of any changes made. For more information, see the Hacker's Guide and the Contributor's Guide.