Munin contributed plugins

#!/usr/bin/env ruby

#

# [passenger_processes]

# user root

# env.process_stats_command /opt/ruby-enterprise-1.8.6-20080810/bin/passenger-status

#

process_stats_command = ENV['process_stats_command'] || '/opt/ruby-enterprise-1.8.6-20080810/bin/passenger-status'

if ARGV.length > 0 && ARGV[0] == 'config'

  puts "graph_title Passenger Processes"

  puts "graph_category webserver"

  puts "graph_vlabel processes"

  puts "max.label Max processes"

  puts "count.label Total processes"

  puts "active.label Active processes"

  puts "queued.label Queued requests"

  exit(0)

end

max = nil

count = nil

active = nil

queued = nil

`#{process_stats_command}`.each_line do |line|

  if /max\s+=\s+(\d+)/.match(line)

    max = $~[1]

  elsif /count\s+=\s+(\d+)/.match(line)

    count = $~[1]

  elsif /^active\s+=\s+(\d+)/.match(line)

    active = $~[1]

  elsif /Waiting on global queue\s+=\s+(\d+)/.match(line)

    queued = $~[1]

  end

end

puts "max.value #{max}"

puts "count.value #{count}"

puts "active.value #{active}"

puts "queued.value #{queued.to_i}"