add configoption for pm=ondemand

manifests/fpm/pool.pp

@@ -42,6 +42,8 @@
 #
 # [*pm_max_requests*]
 #
+# [*pm_process_idle_timeout*]
+#
 # [*pm_status_path*]
 #
 # [*ping_path*]
@@ -128,6 +130,7 @@
   $pm_min_spare_servers      = '5',
   $pm_max_spare_servers      = '35',
   $pm_max_requests           = '0',
+  $pm_process_idle_timeout   = '10s',
   $pm_status_path            = undef,
   $ping_path                 = undef,
   $ping_response             = 'pong',

templates/fpm/pool.conf.erb

@@ -63,6 +63,12 @@ group = <%= @group_final %>
 ;                                    state (waiting to process). If the number
 ;                                    of 'idle' processes is greater than this
 ;                                    number then some children will be killed.
+;  ondemand - no children are created at startup. Children will be forked when
+;             new requests will connect. The following parameter are used:
+;             pm.max_children           - the maximum number of children that
+;                                         can be alive at the same time.
+;             pm.process_idle_timeout   - The number of seconds after which
+;                                         an idle process will be killed.
 ; Note: This value is mandatory.
 pm = <%= @pm %>
 
@@ -91,6 +97,11 @@ pm.min_spare_servers = <%= @pm_min_spare_servers %>
 ; Note: Mandatory when pm is set to 'dynamic'
 pm.max_spare_servers = <%= @pm_max_spare_servers %>
 
+; The number of seconds after which an idle process will be killed.
+; Note: Used only when pm is set to 'ondemand'
+; Default Value: 10s
+pm.process_idle_timeout = <%= @pm_process_idle_timeout %>
+
 ; The number of requests each child process should execute before respawning.
 ; This can be useful to work around memory leaks in 3rd party libraries. For
 ; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.