In order to monitor system parameters like memory and CPU load on Linux systems we recommend to install an SNMP daemon on the system. Then you can monitor the parameters using SNMP. Today I found a tutorial on the debianhelp website that explains in detail how you can install the NET-SNMP service on a Debian Linux system. As soon as this service is installed and configured you can monitor system information like CPU load on a Linux system using PRTG Traffic Grapher and IPCheck Server Monitor.
In short the steps you need to install the software are:
  • run #apt-get install snmpd to install the software
  • edit /etc/snmp/snmpd.conf to allow access to the SNMP service from the outside
  • restart the service
The details are explained in the tutorial on the debianhelp website. Now you should be able to monitor vital system data (e.g. the CPU load) using PRTG Traffic Grapher and IPCheck Server Monitor. Simply create a new sensor, choose "SNMP Library Sensor" and select the "Basic Linux Library" from the list of available libraries.


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