upstream tile_cache_backend {
server 127.0.0.1;
<% @caches.each do |cache| -%>
+ <% if cache[:hostname] != node[:hostname] -%>
#Server <%= cache[:hostname] %>
<% cache.ipaddresses(:family => :inet, :role => :external).sort.each do |address| -%>
server <%= address %> backup;
<% end -%>
<% end -%>
+ <% end -%>
keepalive 32;
}