gistfile1.txt

Vagrant.configure("2") do |config|
  config.vm.box = "dummy"
 
  config.ssh.private_key_path = "/home/myuser/.ssh/id_rsa_my_private_key"
 
  config.vm.provider :rackspace do |rs|
    rs.username        = "YOUR USERNAME"
    rs.api_key         = "YOUR API KEY"
    rs.flavor          = /512MB/
    rs.image           = /Ubuntu/
    rs.public_key_path = "my_custom_key.pub"
  end
end