George Monappallil wrote:
Does anybody have a detailed doc on how I can configure Nagios to use
SNMP to monitor hosts and network equipment.
Is there a way of getting info on remote hosts ( disks, cpu etc )
without installing the NRPE or other addons on the remote hosts. Most of
the time, it is not feasible to do so.
I have NET:SNMP installed on my Nagios ( 2.3.1) box (Solaris 9).
Chances are if you can poll devices with SNMP, then someone has already
written the plugins necessary to process that data.
Check out:
<http://www.nagiosexchange.org/>
check_snmp_disk.pl -- disk usage info
check_snmp_mem.pl -- memory info
check_snmp_procs.pl -- processes info and so on...
These kinds of plugins require a little more overhead for Nagios to
process, but if you don't have a huge network to monitor it seems to
work fine.
A lot of the plugins written to monitor these things are written in
Perl, so you'll need Perl installed on the machine. An example of
check_snmp_disk.pl in action would be:
In checkcommands.cfg:
# 'snmp_disk' Let's try to check for free space on remote disks
define command{
command_name snmp_disk
command_line $USER1$/check_snmp_disk.pl -H $HOSTADDRESS$ -C
public -w $ARG1$ -c $ARG2$
}
You'll have to specify the services to correspond in services.cfg, but
hopefully this will get you started in the right direction.
Also to note, you'll need to specify the partitions or disks in the SNMP
configuration files on your remote hosts. I'm not sure what Solaris does
for SNMP, but for example in RHEL, under /etc/snmpd.conf you have to
specify the parameters that SNMP is allowed to report.
Hopefully this gets you started!
Max
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