Automated Installation Of Nagios Client on Linux Server

client_on_server.sh

#! /bin/bash
#Author   : MANGESHKUMAR B. BHARSAKLE
#Date     : 26,27 JAN 2015
#  Install NRPE Plugin on Server Side

cd /tmp/
wget http://garr.dl.sourceforge.net/project/nagios/nrpe-2.x/nrpe-2.15/nrpe-2.15.tar.gz

tar -xzf nrpe-2.15.tar.gz
cd nrpe-2.15

./configure

make all

make install-daemon

# Verify NRPE Daemon Remotely

echo " Verify NRPE Daemon Remotely "

read -p "Hey KING Please Enter Remote Linux Client IP:  " ip_address

# /usr/local/nagios/libexec/check_nrpe -H $ip_address

# Adding Remote Linux Host to Nagios Monitoring Server

echo "*****Adding Remote Linux Host to Nagios Monitoring Server ****"

cd /usr/local/nagios/etc/

touch hosts.cfg

touch services.cfg

# add these two files to main Nagios configuration file

echo "cfg_file=/usr/local/nagios/etc/hosts.cfg" >> /usr/local/nagios/etc/nagios.cfg

echo "cfg_file=/usr/local/nagios/etc/services.cfg" >> /usr/local/nagios/etc/nagios.cfg

read -p "Please Enter Remote Host IP Address : " remote_ip

echo " ## Default Linux Host Template ##
define host{
name                            linux-box               ; Name of this template
use                             generic-host            ; Inherit default values
check_period                    24x7
check_interval                  5
retry_interval                  1
max_check_attempts              10
check_command                   check-host-alive
notification_period             24x7
notification_interval           30
notification_options            d,r
contact_groups                  admins
register                        0                       ; DONT REGISTER THIS - ITS A TEMPLATE
}

## Default
define host{
use                             linux-box               ; Inherit default values from a template
host_name                       client_server                   ; The name we're giving to this server
alias                           CentOS 6                ; A longer name for the server
address                         $remote_ip           ; IP address of Remote Linux host
}

"  >> /usr/local/nagios/etc/hosts.cfg

#********************open services.cfg File  *****************

echo " define service{
        use                     generic-service
        host_name               client_server
        service_description     CPU Load
        check_command           check_nrpe!check_load
        }

define service{
        use                     generic-service
        host_name               client_server
        service_description     Total Processes
        check_command           check_nrpe!check_total_procs
        }

define service{
        use                     generic-service
        host_name               client_server
        service_description     Current Users
        check_command           check_nrpe!check_users
        }

define service{
        use                     generic-service
        host_name               client_server
        service_description     SSH Monitoring
        check_command           check_nrpe!check_ssh
        }

define service{
        use                     generic-service
        host_name               client_server
        service_description     FTP Monitoring
        check_command           check_nrpe!check_ftp
        }


"  >> /usr/local/nagios/etc/services.cfg

#**************NRPE command definition needs to be created in commands.cfg file. **********************

echo "

# Command to use NRPE to check remote host systems


define command{
        command_name check_nrpe
        command_line \$USER1\$/check_nrpe -H \$HOSTADDRESS\$ -c \$ARG1\$
        }

" >> /usr/local/nagios/etc/objects/commands.cfg

# ********************Finally, verify Nagios Configuration files for any errors. *********

echo "Finally, verify Nagios Configuration files for any errors."

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

#*****************************************************************************************

# Start Nagios Service

service nagios restart