memcached_munin_plugin.rb

#!/usr/bin/ruby
# memcached munin plugin

require 'rubygems'
require 'memcache'

if ENV['HOST'].nil? or ENV['PORT'].nil?
  puts "Define a HOST and PORT!"
  Kernel.exit(1)
end

if ARGV.first == "config"
  puts "graph_title #{server_str} - 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