add inventory script

group_vars/all

@@ -1,4 +0,0 @@
----
-# Variables listed here are applicable to all host groups.
-
-ansible_python_interpreter: /usr/bin/python2

inventory/localhost

@@ -0,0 +1,2 @@
+[host]
+localhost ansible_connection=local ansible_python_interpreter="/usr/bin/python2"

inventory/lxc.rb

@@ -0,0 +1,18 @@
+#!/usr/bin/env ruby
+
+require 'json'
+
+json = JSON.load(File.open("/etc/lxc/container.json"))
+containers = {"_meta" => {"hostvars" => {}}}
+json["network"].each do |host, data|
+  next if data["lxc"] == false
+  role = data["group"] || "container"
+
+  hostvars = { ansible_connection: "lxc", ansible_python_interpreter: "/usr/bin/python2" }
+  hostvars.merge!(data["vars"]) if data["vars"]
+
+  containers[role] ||= []
+  containers[role] << host
+  containers["_meta"]["hostvars"][host] = hostvars
+end
+puts JSON.pretty_generate(containers)