Munin contributed plugins

#!/usr/bin/env ruby

def output_config

  puts <<-END

graph_category passenger

graph_title status

graph_vlabel count

graph_info This graph shows how much passenger process are working, available and how much queries are waiting.

max.label max processes

max.draw AREA

max.info Maximum processes allowed to run simultaneously.

sessions.label queued requests

sessions.draw LINE2

sessions.info Requests queued, waiting to be processed.

running.label running processes

running.draw LINE1

running.info The number of application instances that are currently alive.

active.label active processes

active.draw LINE1

active.info The number of application instances that are currently processing requests.

waiting.label waiting requests

waiting.draw LINE2

waiting.info Requests waiting to be queued.

END

  exit 0

end

def output_values

  status = `sudo passenger-status`

  unless $?.success?

    $stderr.puts "failed executing passenger-status"

    exit 1

  end

  status =~ /max\s+=\s+(\d+)/

  puts "max.value #{$1}"

  status =~ /count\s+=\s+(\d+)/

  puts "running.value #{$1}"

  status =~ /active\s+=\s+(\d+)/

  puts "active.value #{$1}"

  status =~ /Waiting on global queue:\s+(\d+)/

  puts "waiting.value #{$1}"

  total_sessions = 0

  status.scan(/Sessions: (\d+)/).flatten.each { |count| total_sessions += count.to_i }

  puts "sessions.value #{total_sessions}"

end

if ARGV[0] == "config"

  output_config

else

  output_values

end