define nagios::host (
        $address = $ipaddress,
        $alias = $hostname,
        $use = 'generic-host',
        $hostgroups = "generic-linux-host",
        #$hostgroups = ["generic-linux-host","$operatingsystem","$customer_code"],
        $notes = ["[${customer_code}] ${customer_name}"]
        )
        {
            @@nagios_host { "${name}":
                address => $address,
                alias => $alias,
                use => $use,
                hostgroups => $hostgroups,
                notes => $notes,
            }

            if ($nagios_parents != '') {
                Nagios_host["${name}"] { parents => $nagios_parents }
            }
}