Sample to gather stats using SNMP (process list is valid only for Sun Solaris operating System)

snmp_walk.rb

#!/usr/bin/ruby
require 'snmp'
require 'ipaddress'

include SNMP

# ARGV[0] is an IP address or a network in CIDR notation
raise "Missing IP address or network" if ARGV[0].nil?

@list = IPAddress.parse(ARGV[0])
@list.each do |ip|
  puts "Asking #{ip.to_s} for info using 'public' SNMP community"
  Manager.open(:Host => ip.to_s, :Community => 'public') do |manager|
    response = manager.get([ObjectId.new("1.3.6.1.2.1.1.1.0"), ObjectId.new("1.3.6.1.2.1.1.3.0")])
    response.each_varbind do |vb|
      puts "#{vb.name.to_s}  #{vb.value.to_s}  #{vb.value.asn1_type}"
    end

    # Sun Process Table - http://www.alvestrand.no/objectid/1.3.6.1.4.1.42.3.12.1.html
    processTable = ObjectId.new("1.3.6.1.4.1.42.3.12.1")
    manager.walk(processTable) { |varbind|  puts "#{varbind.value.to_s}" if varbind.name.to_s.start_with?("SNMPv2-SMI::enterprises.42.3.12.1.10")}
  end
end