metatable.__index=function(t,k)
  local data=io.popen('timeout -s 9 10 curl -s http://'..k..'.bluevm.com/uptime.php -o /dev/stdout'):read'*a'
  if data:sub(1,1)=="<" then return 'script not found' end
  return json:decode(data)
end
setmetatable(bluevm,metatable)