puppet-managed nagios resources with purging

example.pp

  $config_dir = '/etc/nagios'

  Nagios_host <<||>> {
    target => "${config_dir}/nagios_host.cfg",
    before => File["${config_dir}/nagios_host.cfg"],
  }

  file { "${config_dir}/nagios_host.cfg":
    ensure  => file,
    owner   => $nagios_user,
    group   => $nagios_group,
    mode    => '0644',
    backup  => false,
    replace => false,
  }