+property :fpm_start_servers, :kind_of => Integer, :default => 2
+property :fpm_min_spare_servers, :kind_of => Integer, :default => 1
+property :fpm_max_spare_servers, :kind_of => Integer, :default => 3
+property :fpm_request_terminate_timeout, :kind_of => Integer, :default => 300
+property :fpm_prometheus_port, :kind_of => Integer