How to Monitor Domain Expire Date With Nagios

$ wget -O /usr/local/nagios/libexec/check_domain.sh https://raw.githubusercontent.com/glensc/monitoring-plugin-check_domain/master/check_domain.sh
$ chmod  a+x /usr/local/nagios/libexec/domain.sh

$ vim /usr/local/nagios/etc/hostgroups/domain.cfg
define hostgroup{
        hostgroup_name  CHECK_DOMAIN
        alias           Domain Expiry Check
        members         example.com,test.com
}

$ vim /usr/local/nagios/etc/services/domain.cfg
define service{
        use                             local-service         ; Name of service template to use
        service_description             Domain Expiry
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              3
        normal_check_interval           3
        retry_check_interval            1
        contact_groups                  oncall-admins
        hostgroup_name                  CHECK_DOMAIN
        notification_interval           30
        notification_period             24x7
        notification_options            c,r
        check_command                   check_domain
}

$ vim /usr/local/nagios/etc/commands/domain.cfg
define command{
        command_name    check_domain
        command_line    $USER1$/check_domain.sh -d $HOSTADDRESS$ -w30 -c 15
#-a 1 -C /usr/local/nagios/cache -w 30 -c 15
}