Installing Nagios on Debian Jessie and SNMP (UPS) monitoring
sudo apt-get update;apt-get install nagios3 nagios-plugins nagios-nrpe-plugin apache2 snmp
You will be prompted to set a nagios password during installation. And can now navigate to http://localhost/nagios3/ to access nagios. The admin username is nagiosadmin, and the password is that which you set during installation.
The following is based on the example here. It’s probably better to refer to that for full APC UPS monitoring instructions. I’m going to be looking at monitoring the Arduino I previously setup.
Add the following to /etc/nagios3/:
cfg_file=/etc/nagios3/objects/ups.cfg
Then create the file /etc/nagios3/objects/ups.cfg, with the following contents (you will also need to create the objects directory):
###############################################################################
# HOST DEFINITIONS
###############################################################################
# Define the UPS that we'll be monitoring
define host{
use generic-host
host_name ArduinoVoltMon
alias Arduino Voltage Monitor
notification_period 24x7
check_period 24x7
# contacts nagiosadmin
address 192.168.2.64
}
###############################################################################
# HOST GROUP DEFINITIONS
###############################################################################
define hostgroup{
hostgroup_name ups
alias ups
members ArduinoVoltMon
}
###############################################################################
# SERVICE DEFINITIONS
###############################################################################
# Ping UPS
define service{
use generic-service
host_name ArduinoVoltMon
check_period 24x7
notification_interval 10
service_description PING
check_command check_ping!100.0,20%!500.0,60%
}
define service{
use generic-service
host_name ArduinoVoltMon
service_description UPS Capacity
check_command snmp_ups_capacity! -H $HOSTADDRESS$ -C public
}
Then add the following to the end of /etc/nagios3/commands.cfg:
# 'snmp_ups_capacity' command definition
define command{
command_name snmp_ups_capacity
command_line $USER1$/check_snmp -H $HOSTADDRESS$ -C $ARG1$ -o .1.3.6.1.4.1.318.1.1.1.2.2.1.0 -l '\Battery Charge\' -u '\%\'
}
If you click on Services in Nagios you should now see the following:
I might try this with cacti next. Which in my previous experience seems a lot better than Nagios.
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