class ntp::config {

    File{
        require => Class['ntp::install'],
        notify  => Class['ntp::service'],
    }

    $default_ntp_servers = [
        '0.pool.ntp.org',
        '1.pool.ntp.org',
        '2.pool.ntp.org'
    ]

    $servers = extlookup('ntp_servers', $default_ntp_servers)

    file { '/etc/ntp.conf':
        replace => 'true',
        content => template('ntp/ntp.conf.erb'),
    }

}