System monitoring

Most of the system here runs on Raspberry PI's and native IP devices (like internet connected radio's and a TV with an IP connection). Besides logging human activity the system also keeps track of itself (temperatures, CPU & memory usage etc). 

RaspberryLast readingCurrent temperatureLowest temp.Highest temp.
Attic Raspberry CPU27-May-2017 00:44:2853.5028.2060.54
Databaseserver27-May-2017 00:43:500.000.0012.00
Garage Raspberry CPU27-May-2017 00:43:4650.3024.1261.68
Livingroom Raspberry CPU27-May-2017 00:44:1543.3031.7453.27
Raspberry Doorbell CPU27-May-2017 00:42:0841.2034.3445.48
Study Raspberry CPU27-May-2017 00:43:5559.1026.1082.92
Utility Closet Raspberry CPU27-May-2017 00:41:2859.5047.9461.89