HostTemplate.txt

cd /usr/local/nagios/etc/
mkdir mydevice myservices
chown nagios:nagios mydevice/ myservices/
nano /usr/local/nagios/etc/nagios.cfg

cfg_dir=/usr/local/nagios/etc/mydevice
cfg_dir=/usr/local/nagios/etc/myservices

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
systemctl reload nagios
systemctl status nagios

###################

nano mydevice/device.cfg
###################
define host{
name linux-box ; 
use generic-host ;
check_period 24x7
check_interval 1
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 ;
}
#####################
#Host-Declearation
#####################
define host{
use linux-box ; 
host_name commmon-pc ; 
alias windows ; 
address 192.168.10.132 ;
}
###################

nano myservices/device.cfg
###################
define service{
use generic-service
host_name commmon-pc
service_description check-host-alive
check_command check-host-alive
}

##################

define hostgroup {

    hostgroup_name          Dolonchapa
    alias                   Dolonchapa
    members                 Dolonchapa-C01
}


##################
define hostgroup {
 hostgroup_name  hostgroup name
 alias           alias name
 members         
}

define servicegroup {
    servicegroup_name  service name
    alias              alias name
}

define servicegroup{
servicegroup_name service name
members hostname,servicename,hostname,servicename,...
}

########################

define host{
 use generic-switch
 host_name cisco_router
 alias cisco_router
 address 192.168.10.1
 hostgroups switches
 }
# Define the switch that we'll be monitoring
define host{
 use generic-switch
 host_name switch#1
 alias switch#1
 address 192.168.10.5
 hostgroups switches
 }
define host{
 use generic-switch
 host_name switch#2
 alias switch#2
 address 192.168.11.5
 hostgroups switches
 parents cisco_router
}
define hostgroup{
 hostgroup_name switches
 alias Network Switches
 members switch#1, switch#2
}

# Define the Nagios Server (NMS)
define host{
 use linux-server
 host_name UbuntuNagios
 alias UbuntuNagios
 address 192.168.10.3
 }

# Define host for the adjoining PCs
define host{
 use linux-server
 host_name cclinux
 alias cclinux
 address 192.168.11.3
 parents switch#2
 }
define host {
 use linux-server
 host_name cclinux#2
 alias cclinux#2
 address 192.168.10.4
 parents switch#2
 }

#SERVICE DEFINITIONS
# Create a service to PING to switch
define service{
 use generic-service
 host_name switch#1, switch#2, cclinux, cclinux#2,
UbuntuNagios, cisco_router
 service_description PING
 check_command check_ping!200.0,20%!600.0,60%
 normal_check_interval 5
 retry_check_interval 1
 }

# Monitor uptime via SNMP
define service{
 use generic-service
 host_name switch#2
 service_description Uptime
 check_command check_snmp!-C public -o sysUpTime.0
}

# Monitor Port 1 status via SNMP
define service{
 use generic-service
 host_name switch#1
 service_description Port 1 Link Status
 check_command check_snmp!-C public -o ifOperStatus.3 -r 1
-H 192.168.10.5
}

# Monitor bandwidth via MRTG logs
define service{
 use generic-service
 host_name cisco_router
 service_description Port 1 Bandwidth Usage
 check_command
check_local_mrtgtraf!/var/lib/mrtg/192.168.10.1_2.log!
AVG!1000000,1000000!5000000,5000000!10
}

# Define a service to check for PCs.
define service {
 use local-service
 host_name cclinux, cclinux#2
 service_description Root Partition
 check_command check_local_disk!20%!10%!/ }

define service{
 use local-service
 host_name cclinux, cclinux#2, UbuntuNagios
 service_description Current Users
 check_command check_local_users!20!50
 }
define service{
 use local-service
 host_name cclinux, cclinux#2
 service_description Total Processes
 check_command check_local_procs!250!400!RSZDT
 }

# Define a service to check the load on the PCs
define service{
 use local-service
 host_name cclinux, cclinux#2
 service_description Current Load
 check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0
 }

define service {
 use local-service
 host_name cclinux, cclinux#2, UbuntuNagios
 service_description Swap Usage
 check_command check_local_swap!20!10
 }