Define A Host Group

View existing configuration:

# cd /etc/nagios/objects/

# ls

Analog_system.cfg  contacts.cfg   localhost.cfg     OpenKM.cfg   switch.cfg     

commands.cfg       printer.cfg    templates.cfg     windows.cfg  timeperiods.cfg

 

# cat Analog_system.cfg | grep -A 5 host{

define host{

        use                     linux-server,host-pnp

        host_name               Analog_system

        alias                   Analog_system

        address                 192.168.60.11

        }

 

# cat OpenKM.cfg | grep -A 5 host{

define host{

        use                     linux-server,host-pnp

        host_name               OpenKM

        alias                   OpenKM

        address                 192.168.60.5

}

 

# cat localhost.cfg | grep -A 9 host{

define host{

        use                     linux-server,host-pnp

        host_name               Monitor

        alias                   Monitor

        address                 127.0.0.1

        }

 

 

Built Category and mobile file:

# cd /etc/nagios/

# mkdir Linuxhosts

# mkdir Switches

# mv objects/switch.cfg Switches/

# mv objects/Analog_system.cfg Linuxhosts/

# mv objects/OpenKM.cfg Linuxhosts/

# mv objects/localhost.cfg Linuxhosts/

# chown -R nagios:nagios Switches/

# chown -R nagios:nagios Linuxhosts/

 

 

Configuring Host Groups file:

# cd hostgroups/

# vi hostgroup.cfg 

define hostgroup{

        hostgroup_name  linux-hosts                     ; The name of the hostgroup

        alias           Linux-hosts                     ; Long name of the group

        members         Monitor,OpenKM,Analog_system    ; Comma separated list of hosts that belong to this group

        }

 

# chown -R nagios:nagios ../hostgroups/

 

 

View the main configuration file:

# cat ../nagios.cfg | grep -v '#' | grep cfg_file

cfg_file=/etc/nagios/objects/commands.cfg

cfg_file=/etc/nagios/objects/contacts.cfg

cfg_file=/etc/nagios/objects/timeperiods.cfg

cfg_file=/etc/nagios/objects/templates.cfg

cfg_file=/etc/nagios/objects/localhost.cfg

cfg_file=/etc/nagios/objects/OpenKM.cfg

cfg_file=/etc/nagios/objects/Analog_system.cfg

cfg_file=/etc/nagios/objects/switch.cfg

 

 

Modify the main configuration file:

# vi ../nagios.cfg

 

#cfg_file=/etc/nagios/objects/localhost.cfg

#cfg_file=/etc/nagios/objects/OpenKM.cfg

#cfg_file=/etc/nagios/objects/Analog_system.cfg

#cfg_file=/etc/nagios/objects/switch.cfg

 

#Add by Kingcraft

cfg_dir=/etc/nagios/hostgroups

cfg_dir=/etc/nagios/Linuxhosts

cfg_dir=/etc/nagios/Switches

 

 

Check the syntax and restart:

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

# service nagios restart