Memcached Munin Plugin

memcached_munin_plugin.rb

#!/usr/bin/ruby
# memcached munin plugin
# requirements: memcached and the memcache gem (sudo gem install memcache)

require 'rubygems'
require 'memcache'

HOST = ENV['HOST'].nil? ? '127.0.0.1' : ENV['HOST']
PORT = ENV['PORT'].nil? ? 11211 : ENV['PORT']

if ARGV.first == "config"
  puts "graph_title Memcached - items"
  puts 'graph_category Memcached'
  puts 'graph_vlabel Items'
  puts 'curr_items.label Current items'
  puts 'evictions.label Items ousted'
else
  mem = Memcache::Server.new(:host => ENV['HOST'], :port => ENV['PORT'])
  stats_hash = mem.stats
  puts "curr_items.value #{stats_hash['curr_items']}"
  puts "evictions.value #{stats_hash['evictions']}"
end