hosts.conf

object Host "me.owntracks.alr.st" {
  import "owntracks-host"
}

object Host "5s.owntracks.alr.st" {
  import "owntracks-host"
}

object Host "sm.owntracks.alr.st" {
  import "owntracks-host"
}

ot-recorder.lua

local icinga2Cmd

function otr_init()
    otr.log("recorder lua hooks starting")
    icinga2Cmd = io.open("/var/run/icinga2/cmd/icinga2.cmd", "a")
end

function otr_hook(topic, _type, data)
    if _type == "location" then
        local batt = data['batt']
        local status = 0;
        local code = "OK"
        if batt < 20 then
                status = 1
                code = "WARNING"
        end
        if batt < 10 then
                status = 2
                code ="CRITICAL"
        end
        local locationOut = "[" .. data['tst'] .. "] PROCESS_SERVICE_CHECK_RESULT;" .. data['tid'] ..  ".owntracks.alr.st;location;0;" .. data['addr'] .. "\n"
        local batteryOut = "[" .. data['tst'] .. "] PROCESS_SERVICE_CHECK_RESULT;" .. data['tid'] ..  ".owntracks.alr.st;battery;" .. status .. ";BATTERY " .. code .. " - " .. batt .. "%\n"
        icinga2Cmd:write(locationOut)
        icinga2Cmd:write(batteryOut)
        icinga2Cmd:flush()

    end
end

function otr_exit()
end

services.conf

apply Service "location" {
  import "generic-service"
  check_command = "dummy"
  vars.dummy_state =  3
  vars.dummy_text = "No Passive Check Result Received."
  assign where host.vars.os == "owntracks"
  enable_active_checks = false
  max_check_attempts = 3
  retry_interval = 1m
  check_interval = 12h
}

apply Service "battery" {
  import "generic-service"
  check_command = "dummy"
  vars.dummy_state =  3
  vars.dummy_text = "No Passive Check Result Received."
  assign where host.vars.os == "owntracks"
  enable_active_checks = false
  max_check_attempts = 3
  retry_interval = 1m
  check_interval = 12h
}

templates.conf

template Host "owntracks-host" {
  check_command = "dummy"

  max_check_attempts = 3
  vars.os = "owntracks"
  vars.dummy_state = 0
}