Contents

#! /usr/bin/env ruby
#  encoding: UTF-8
#
#   disk-metrics
#
# DESCRIPTION:
#
# OUTPUT:
#   metric data
#
# PLATFORMS:
#   Linux
#
# DEPENDENCIES:
#   gem: sensu-plugin
#   gem: socket
#
# USAGE:
#
# NOTES:
#
# LICENSE:
#   Copyright 2012 Sonian, Inc <[e-mail]>
#   Released under the same terms as Sensu (the MIT license); see LICENSE
#   for details.
#

require 'sensu-plugin/metric/cli'
require 'socket'

#
# Disk Graphite
#
class DiskGraphite < Sensu::Plugin::Metric::CLI::Graphite
  option :scheme,
         description: 'Metric naming scheme, text to prepend to metric',
         short: '-s SCHEME',
         long: '--scheme SCHEME',
         default: "#{Socket.gethostname}.disk"

  # this option uses lsblk to convert the dm-<whatever> name to the LVM name.
  # sample metric scheme without this:
  # <hostname>.disk.dm-0
  # sample metric scheme with this:
  # <hostname>.disk.vg-root
  option :convert,
         description: 'Convert devicemapper to logical volume name',
         short: '-c',
         long: '--convert',
         default: false

  # Main function
  def run # rubocop:disable all
    # http://www.kernel.org/doc/Documentation/iostats.txt
    metrics = %w(reads readsMerged sectorsRead readTime writes writesMerged sectorsWritten writeTime ioInProgress ioTime ioTimeWeighted)

    File.open('/proc/diskstats', 'r').each_line do |line|
      stats = line.strip.split(/\s+/)
      _major, _minor, dev = stats.shift(3)
      if config[:convert]
        dev = `lsblk -P -o NAME /dev/"#{dev}"| cut -d\\" -f2`.lines.first.chomp! if dev =~ /^dm-.*$/
      end
      next if stats == ['0'].cycle.take(stats.size)

      metrics.size.times { |i| output "#{config[:scheme]}.#{dev}.#{metrics[i]}", stats[i] }
    end

    ok
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
sensu-plugins-disk-checks-1.0.1	bin/metrics-disk.rb
sensu-plugins-disk-checks-1.0.0	bin/metrics-disk.rb
sensu-plugins-disk-checks-0.0.4	bin/disk-metrics.rb
sensu-plugins-disk-checks-0.0.2	bin/disk-metrics.rb
sensu-plugins-disk-checks-0.0.1	bin/disk-metrics.rb