module-nginx/templates/vhost/vhost_header.erb

server {
  listen                <%= listen_ip %>;
  <% # check to see if ipv6 support exists in the kernel before applying %>
  <% if ipv6_enable == 'true' && (defined? ipaddress6) %>
  listen [<%= ipv6_listen_ip %>]:<%= ipv6_listen_port %> default ipv6only=on;
  <% end %>
  server_name           <%= rewrite_www_to_non_www ? name.gsub(/^www\./, '') : name %>;
  access_log            <%= scope.lookupvar('nginx::params::nx_logdir')%>/<%= name %>.access.log;