Amazon Route 53 Health CheckでYAMAHAルータを監視するためのLuaスクリプト

health_check_server.lua

tcp = rt.socket.tcp()
tcp:setoption("reuseaddr", true)
res, err = tcp:bind("0.0.0.0", 3800)

if not res and err then
  print(err)
  os.exit(1)
end

res, err = tcp:listen()
if not res and err then
  print(err)
  os.exit(1)
end

while 1 do
  control = assert(tcp:accept())
  control:settimeout(10)
  sent, err = control:send("I'm alive.\n")
  control:close()
  rt.sleep(1)
end