On Mon, 2009-02-16 at 09:59 +0800, Fajar Priyanto wrote: > Hi all, > I have a situation like this: > Our little server room is always on. It has an air conditioning unit, > but barely enough. > So sometimes during weekend, the temperature could reach unhealthy > level, like 29 degree Celsius. > Currently, there's no personnel to monitor it 24 hours a day. > I'm thinking of using a tool to monitor the temperature, and then send > sms/email when it reaches certain threshold. > Anyone has an idea? Could be software based or hardware one. > Thank you. If you've got an APC UPS, there's a chance you can get a temperature sensor that attaches to it. That can be checked from Nagios, which can send alerts when thresholds are reached. You can also graph temperature over time (via SNMP) using Cacti, so that you can verify that Nagios is doing the right thing. Note that even if you use lm_sensors rather than an external temperature sensor[1], it's still a good idea to use Nagios and/or Cacti in conjunction with it. I believe Nagios has a check_lmsensors plugin available. ;) -I [1] - lm_sensors reports internal temperature, which is usually much higher than external temperature. So tune your thresholds accordingly...