CentOS Stream 8
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Nagios 4 : Add Target Host (Ping)
2021/06/03
 
It's possible to monitor other servers on the network.
[1] For exmaple, add a Host as monitoring target with simply Ping command.
[root@dlp ~]#
vi /etc/nagios/nagios.cfg
# line 51 : uncomment

cfg_dir=/etc/nagios/servers
[root@dlp ~]#
mkdir /etc/nagios/servers

[root@dlp ~]#
chgrp nagios /etc/nagios/servers

[root@dlp ~]#
chmod 750 /etc/nagios/servers

[root@dlp ~]#
vi /etc/nagios/servers/node01.cfg
# create new

define host {
    use                     linux-server
    host_name               node01
    alias                   node01
    address                 10.0.0.51
}
define service {
    use                     generic-service
    host_name               node01
    service_description     PING
    check_command           check_ping!100.0,20%!500.0,60%
}

[root@dlp ~]#
systemctl restart nagios

[2] It's possible to see the status for a new server on the admin site.
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