gistfile1.txt

#!/usr/bin/ruby
#Set the environment to maestro

# lists hosts whose chef-client hasn't checked in with the server for a while

# how many seconds before we alert
threshold = 86400

# requires that your user account is set up for Chef's "knife" utility

me = ENV["USER"]
if not File.exists?(File.expand_path("~#{me}/.chef/knife.rb"))
  puts "Please set up knife first."
  exit 1
end

require 'rubygems'
require 'chef/rest'
require 'chef/config'
require 'chef/search/query'
require 'chef/node'
require 'pony'

config = Chef::Config.from_file('.chef/knife.rb')
q = Chef::Search::Query.new

time_now = Time.now.to_i
time_threshold = Time.now.to_i - threshold

host_list = Array.new

# use Solr query as much as possible
q.search(:node, "ohai_time:[0 TO #{time_threshold}]") do |item|
  delay = (Time.now.to_i - item[:ohai_time].to_i)
  host_list.push([item[:hostname], item[:domain], item[:ipaddress], "#{delay/3600} hours ago"])
end
if not host_list.empty?
  File.new("MissingNodes.txt", "w+")
  File.open('MissingNodes.txt', 'w') do |f|
    f.write("Chef nodes that have not checked in in more than 24 hours\n")
    host_list.each do |item|
      f.write("#{item}\n")
    end
  end
end

Pony.mail(
  :to => 'systems-notify@wwwh.com',
  :from =>'Chef',
  :subject => 'Nodes that didnt call home in the last day',
  :html_body => 'Chef Nodes that have not checked-in in more than 24 hours',
  :attachments => {"MissingNodes.txt" => File.read("MissingNodes.txt")},
  :body_part_header => { content_disposition: "inline" }
)