Create a databag through Chef's REST API

upload_chef_databag.rb

#!/usr/bin/ruby

require 'chef/config'
require 'chef/log'
require 'chef/rest'

$chef_server_url = "https://localhost"
$client_name = "chef-admin"
$signing_key_filename="/root/.chef/chef-admin.pem"

rest = Chef::REST.new($chef_server_url, $client_name, $signing_key_filename)

unless rest.get_rest('/data/').include? 'users'
  databag = {
    "name" => "users"
  }
  rest.post_rest('/data/',databag)
end