Nagios tips

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Good plugin for check CPU:

check_cpu.pl

To make it work you need to install some Perl modules:

    cpan -i Nagios::Plugin Getopt:Compact

I usually use this plugin with the fillowing parametres:

$USER1$/check_nrpe -H $HOSTADDRESS$ -c check_cpu -a -w 50 -c 80

Another plugin for checking CPU is check_cpu.sh.

It is more accurate because it produces two CPU checks, using -i (interval) option. When there is only one check, false aletrts may happen. For example, if one program occupies 100% of CPU for 2 seconds and exactly at this time Nagios checks CPU, critical alert would be sent.

Memory plugin, that I usually use:

check_memory.pl

Send SMS with gammu

~/.gammurc

[gammu]

port = /dev/ttyUSB0

model = connection = at19200

synchronizetime = yes

logfile =

logformat = nothing

use_locking =

gammuloc =

gammu sendsms text 07874454543