add a timer to kill childrens not serving a request

files/fpm/kill-pool.service

+[Unit]
+Description=Kill fpm pools not serving requests
+
+[Service]
+ExecStart=/usr/local/sbin/fpm-kill-pool.sh
+
+[Install]
+WantedBy=default.target
+

files/fpm/kill-pool.sh

+#!/bin/bash
+
+shopt -s nullglob
+for fpm in /run/fpm-*/pid; do
+  CHILDREN=$(ps -o pid --no-headers --ppid `cat ${fpm}` | wc -l)
+
+  if [ "${CHILDREN}" == "0" ]; then
+    kill `cat ${fpm}`
+  fi
+done

manifests/fpm.pp

@@ -43,6 +43,7 @@ define php::fpm(
   } ~> Exec['systemctl-daemon-reload']
 
   if $ensure == 'present' {
+    include ::php::fpm::base
     File[ "${etcdir}/php-fpm.d/${name}.conf"]{
       group => $run_group,
     }

manifests/fpm/base.pp

+# fpm base stuff
+class php::fpm::base {
+  file{
+    '/usr/local/sbin/fpm-kill-pool.sh':
+      source => 'puppet:///modules/php/fpm/kill-pool.sh',
+      owner  => root,
+      group  => 0,
+      mode   => '0755',
+  } -> systemd::unit_file{
+    'fpm-kill-pool.service':
+      source => 'puppet:///modules/php/fpm/kill-pool.service',
+  } -> systemd::unit_file{
+    'fpm-kill-pool.timer':
+      content => content('php/fpm/fpm-kill-pool.timer.erb'),
+  } ~> service{
+    'fpm-kill-pool.timer':
+      ensure => running,
+      enable => true,
+  }
+}