Invalid machine group (virtualbox)

[Félix Barbeira]

I want to create a vagrant machine that automatically adds itself to the group "Vagrant" in my virtualbox mac installation. The group is already created. I add the following lines in the "Vagrantfile" but it fails:

config.vm.provider "virtualbox" do |v|

  v.name = "Ubuntu 12 LTS x64"

  v.customize ["modifyvm", :id, "--groups", "Vagrant"]

end

This is the output:

fbarbeira@station:~/VagrantLab$ vagrant up precise

Bringing machine 'precise' up with 'virtualbox' provider...

[precise] Importing base box 'precise64'...

[precise] Matching MAC address for NAT networking...

[precise] Setting the name of the VM...

[precise] Clearing any previously set forwarded ports...

[precise] Creating shared folders metadata...

[precise] Clearing any previously set network interfaces...

[precise] Preparing network interfaces based on configuration...

[precise] Forwarding ports...

[precise] -- 22 => 2222 (adapter 1)

[precise] Running 'pre-boot' VM customizations...

A customization command failed:

["modifyvm", "910a92bd-35e3-43d4-9c13-2b4adfea5cd9", "--groups", "Vagrant"]

The following error was experienced:

VBoxManage: error: Invalid machine group 'Vagrant'

VBoxManage: error: Details: code NS_ERROR_INVALID_ARG (0x80070057), component VirtualBox, interface IVirtualBox, callee nsISupports

VBoxManage: error: Context: "COMSETTER(Groups)(ComSafeArrayAsInParam(groups))" at line 485 of file VBoxManageModifyVM.cpp

Please fix this customization and try again.

fbarbeira@station:~/VagrantLab$

[Vit Chernomor]

prepend "Vagrant" by forwar dslash as below

v.customize ["modifyvm", :id, "--groups", "/Vagrant"]

i found similar in example:

https://blogs.oracle.com/fatbloke/entry/creating_and_using_vm_groups