diff --git a/manifests/site.pp b/manifests/site.pp
index 0f93705e08..8ae5747d74 100644
--- a/manifests/site.pp
+++ b/manifests/site.pp
@@ -211,7 +211,7 @@ node 'cacti.openstack.org' {
   include openstack_project::ssl_cert_check
   class { 'openstack_project::cacti':
     sysadmins   => hiera('sysadmins', []),
-    cacti_hosts => hiera('cacti_hosts'),
+    cacti_hosts => hiera_array('cacti_hosts'),
   }
 }
 
diff --git a/modules/openstack_project/manifests/cacti.pp b/modules/openstack_project/manifests/cacti.pp
index 17fbf0e6fc..2c6a69eca1 100644
--- a/modules/openstack_project/manifests/cacti.pp
+++ b/modules/openstack_project/manifests/cacti.pp
@@ -73,5 +73,20 @@ class openstack_project::cacti (
     require => File['/var/lib/cacti/linux_host.xml'],
   }
 
-  openstack_project::cacti_device { $cacti_hosts: }
+  file { '/var/lib/cacti/devices':
+    ensure  => present,
+    content => join($cacti_hosts, " "),
+    mode    => '0744',
+    owner   => 'root',
+    group   => 'root',
+  }
+
+  cron { 'add cacti hosts':
+    ensure  => present,
+    user    => root,
+    command => 'for host in $(cat /var/lib/cacti/devices); do /usr/local/bin/create_graphs.sh $host; done',
+    minute  => '0',
+  }
+
+
 }
diff --git a/modules/openstack_project/manifests/cacti_device.pp b/modules/openstack_project/manifests/cacti_device.pp
deleted file mode 100644
index 9bc980cf73..0000000000
--- a/modules/openstack_project/manifests/cacti_device.pp
+++ /dev/null
@@ -1,9 +0,0 @@
-# Define that adds a host to a cacti installation.
-# Takes the fqdn of the host as the namevar for this define.
-define openstack_project::cacti_device()
-{
-  exec { "cacti_create_${name}":
-    command => "/usr/local/bin/create_graphs.sh ${name}",
-    require => Exec['cacti_import_xml']
-  }
-}