etc-hosts

127.0.0.1	localhost localhost.localdomain
10.93.54.53	someserver.example.com someserver
10.93.55.250	filer5-dd
10.93.55.250	filer5-dd

mounts-attributes-mounts.rb

default[:mount_aliases] = Array.new

mounts-recipes-default.rb

template "/etc/hosts" do
  source "hosts.erb"
  owner "root"
  group "root"
  mode 0644
  backup false
  variables(:mount_aliases => node[:mount_aliases])
  not_if { node[:mount_aliases].empty? }
end

mounts-templates-default-hosts.erb

127.0.0.1	localhost localhost.localdomain
<%= node[:ipaddress] %>	<%= node[:fqdn] %> <%= node[:hostname] %>
<% @mount_aliases.each do |host| %>
<%= host[:ip] %>	<%= host[:names] %>
<% end %>

role.rb

name "some role"
description "blah blah"
recipes "mounts"
override_attributes(
  "mount_aliases" => [
    {'ip' => '10.93.55.250', 'names' => 'filer5-dd'}
  ]
)