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;
}

server {
    listen       443 ssl http2 default_server;
    server_name  localhost;

    proxy_buffers 8 64k;

    ssl_certificate      /etc/ssl/certs/<%= @certificate %>.pem;
    ssl_certificate_key  /etc/ssl/private/<%= @certificate %>.key;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers <%= node[:ssl][:ciphers] -%>;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:50m;
    ssl_session_timeout 30m;
    ssl_stapling on;
    ssl_dhparam /etc/ssl/certs/dhparam.pem;
    resolver <%= @resolvers.join(" ") %>;

    location / {
      proxy_pass http://tile_cache_backend;
      proxy_set_header X-Forwarded-For $remote_addr;
      proxy_http_version 1.1;
      proxy_set_header Connection "";
    }
}