snmpinform.rb

#! /usr/bin/env ruby

require 'net-snmp2'

Net::SNMP.init
Net::SNMP::Debug.logger = Logger.new(STDOUT)

session = Net::SNMP::TrapSession.open(
  peername: 'localhost:199',
  version: '2c',
  community: 'public'
)

probe_oid = '.1.3.6.1.4.1.2021.2'

session.inform(
  oid: probe_oid,
  uptime: nil,
  varbinds: [
    { oid: probe_oid + '.1', value: trigger_hostname },
    { oid: probe_oid + '.2', value: severity },
    { oid: probe_oid + '.3', value: trigger_name },
    { oid: probe_oid + '.4', value: item_value },
    { oid: probe_oid + '.5', value: trigger_hostgroup_name },
    { oid: probe_oid + '.6', value: application_name },
    { oid: probe_oid + '.7', value: server_name }
  ]
)