how to get trap messages about cpu usage using snmpd.conf

Question

i'm trying to create a threshold for cpu usage in snmpd.conf.

i included the MIB in the configuration file for the cpu usage:

.1.3.6.1.4.1.2021.11.10.0

but i really don't know what are the flags needed for me to monitor that. it is not like

load 10 11 12 and how to invoke the monitor command that will send the trap message when the cpu percentage exceeds the threshold

Answer 1

To monitor CPU usage and other system resources I use nagios3.

Nagios can read data from SNMP and draw graphs and raise notifications if certain threshold is reached, nagios server should have apache install.

Since nagios needs configuration here is nice page for start Nagios installation

target computer needs to have SNMPd installed

Answer 2

There is DisMan Event MIB which is usually built with snmpd.

Basically you need to addin your snmpd.conf:

• trapsink/trap2sink/informsink

• monitor Statement

  Here is the man page for DisMan and some examples from Stack Overflow