zfs_status_twittter.rb

#!/usr/bin/env ruby
# Uses some commands to determine the OpenSolaris system state and 
require 'rubygems'
gem 'twitter'
require  'twitter'

ME_ON_TWITTER = 'mrtoto'
httpauth = Twitter::HTTPAuth.new('email', 'password')

$twitter = Twitter::Base.new(httpauth)

field_names = ['Pool', 'Size', 'Used Space', 'Avalible Space', 'Capacity Used', 'Health', 'Alternative Root']
pool_states = %w{ DEGRADED FAULTED ONLINE OFFLINE REMOVED UNAVAIL }


def twitter!(status)
  $twitter.update(status) if status
  STDERR.puts "Twitter: #{status}" if $DEBUG
end

zpool_list = `/usr/sbin/zpool list -H`

states = []

zpool_list.each_line do |line|
  states << line.split("\t").collect{|e| e.strip}
end

states.each do |pool_state|
  # check health
  health = pool_state[field_names.index('Health')]
  if health != 'ONLINE'
    twitter!("@#{ME_ON_TWITTER} ZFS Pool #{pool_state.first} on #{`hostname`.strip} is in #{health} condition")
  end
  
  # check free space
  used_capacity = (pool_state[field_names.index('Capacity Used')].to_f) / 100
  if used_capacity > 0.9
    used = pool_state[field_names.index('Used Space')]
    total = pool_state[field_names.index('Avalible Space')]
    twitter!("@#{ME_ON_TWITTER} Pool #{pool_state.first} on #{`hostname`.strip} has low free space. #{used} of #{total} used (#{used_capacity*100}%)")

  end

  str = %Q{#{`hostname`.strip}: #{pool_state.first} - Used: #{pool_state[field_names.index('Used Space')]}, Free: #{pool_state[field_names.index('Avalible Space')]}, Used: #{pool_state[field_names.index('Capacity Used')]}, Health: #{pool_state[field_names.index('Health')]}}
  twitter!(str)
end