diff --git a/aodh/server/cluster.yml b/aodh/server/cluster.yml
index fb6839b..fb8f747 100644
--- a/aodh/server/cluster.yml
+++ b/aodh/server/cluster.yml
@@ -8,6 +8,12 @@
     openstack_event_alarm_topic: alarm.all
     # Keep alarm history in database for 30 days
     aodh_alarm_history_ttl: 2592000
+  linux:
+    system:
+      cron:
+        user:
+          aodh:
+            enabled: true
   aodh:
     server:
       enabled: true
diff --git a/aodh/server/single.yml b/aodh/server/single.yml
index 6fec2a6..8442a2d 100644
--- a/aodh/server/single.yml
+++ b/aodh/server/single.yml
@@ -5,6 +5,12 @@
     openstack_event_alarm_topic: alarm.all
     # Keep alarm history in database for 30 days
     aodh_alarm_history_ttl: 2592000
+  linux:
+    system:
+      cron:
+        user:
+          aodh:
+            enabled: true
   aodh:
     server:
       ttl: ${_param:aodh_alarm_history_ttl}
diff --git a/cassandra/backup/server/single.yml b/cassandra/backup/server/single.yml
index ffb43cf..c441529 100644
--- a/cassandra/backup/server/single.yml
+++ b/cassandra/backup/server/single.yml
@@ -3,6 +3,12 @@
 parameters:
   _param:
     cassandra_backup_public_key: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCzLUiHKAjfFXiZ3fsgx35uXF6VivfC5WFafu4QMalxmj6W+s277oCfdWA8Du5f1wtQXM73VQ5nHkXhM2UIfUMarsyhXK+BxKVrcgEBNHdKlDytaecUPyuOxTDdGWhN/DPv5/vL8NYWweEYBbNbLgU0Td7Rvm52TUXKThIDjeF7XDxX4ShXWipBSwU4boOUBtR8KWfga8fsqeBN+eacuAQFR3MrrOfVvAuWW6Bsf047cmd+V6Qv0raoW73Nu4M/ZAdTsaR5k62a0cHsSRoi3hCmNRqw+CZaQi8prQU6t26eWPEtznjp5EkPF+LLh8LxUoCfWqWT+Lxe8QQwT1nx/LCN
+  linux:
+    system:
+      cron:
+        user:
+          cassandra:
+            enabled: true
   cassandra:
     backup:
       server:
diff --git a/ceph/backup/server/single.yml b/ceph/backup/server/single.yml
index ca36297..896a6cc 100644
--- a/ceph/backup/server/single.yml
+++ b/ceph/backup/server/single.yml
@@ -1,2 +1,9 @@
 classes:
 - service.ceph.backup.server
+parameters:
+  linux:
+    system:
+      cron:
+        user:
+          ceph:
+            enabled: true
diff --git a/elasticsearch/server/curator.yml b/elasticsearch/server/curator.yml
index fe7383d..a73ef44 100644
--- a/elasticsearch/server/curator.yml
+++ b/elasticsearch/server/curator.yml
@@ -2,6 +2,12 @@
   _param:
     elasticsearch_curator_indices_pattern: "^(log|notification)-.*$"
     elasticsearch_curator_retention_period: 31
+  linux:
+    system:
+      cron:
+        user:
+          elasticsearch:
+            enabled: true
   elasticsearch:
     server:
       curator:
diff --git a/glance/control/cluster.yml b/glance/control/cluster.yml
index e218835..ae2b3c1 100644
--- a/glance/control/cluster.yml
+++ b/glance/control/cluster.yml
@@ -6,6 +6,10 @@
 parameters:
   linux:
     system:
+      cron:
+        user:
+          glance:
+            enabled: true
       package:
         python-pymysql:
           fromrepo: ${_param:openstack_version}
diff --git a/glance/control/single.yml b/glance/control/single.yml
index 63e1b48..cd5a6fe 100644
--- a/glance/control/single.yml
+++ b/glance/control/single.yml
@@ -3,6 +3,10 @@
 parameters:
   linux:
     system:
+      cron:
+        user:
+          glance:
+            enabled: true
       package:
         python-pymysql:
           fromrepo: ${_param:openstack_version}
diff --git a/keystone/server/fernet_rotation/cluster.yml b/keystone/server/fernet_rotation/cluster.yml
index a4aad33..7da8b5b 100644
--- a/keystone/server/fernet_rotation/cluster.yml
+++ b/keystone/server/fernet_rotation/cluster.yml
@@ -24,6 +24,10 @@
         credential_rotation_driver: ${_param:credential_rotation_driver}
   linux:
     system:
+      cron:
+        user:
+          keystone:
+            enabled: true
       job:
         keystone_fernet_rotate_rsync:
           command: '/var/lib/keystone/keystone_keys_rotate.sh -r -s -t fernet >> /var/log/keystone/keystone-rotate.log 2>> /var/log/keystone/keystone-rotate.log'
diff --git a/keystone/server/fernet_rotation/single.yml b/keystone/server/fernet_rotation/single.yml
index de5ca6a..bb6f234 100644
--- a/keystone/server/fernet_rotation/single.yml
+++ b/keystone/server/fernet_rotation/single.yml
@@ -10,6 +10,10 @@
         credential_rotation_driver: ${_param:credential_rotation_driver}
   linux:
     system:
+      cron:
+        user:
+          keystone:
+            enabled: true
       job:
         keystone_fernet_rotate_rsync:
           command: '/var/lib/keystone/keystone_keys_rotate.sh -r -t fernet >> /var/log/keystone/keystone-rotate.log 2>> /var/log/keystone/keystone-rotate.log'
diff --git a/linux/system/single/simple.yml b/linux/system/single/simple.yml
index 2b4e919..45be219 100644
--- a/linux/system/single/simple.yml
+++ b/linux/system/single/simple.yml
@@ -8,6 +8,16 @@
     local_package_repos: false
   linux:
     system:
+      at:
+        enabled: true
+        user:
+          root:
+            enabled: true
+      cron:
+        enabled: true
+        user:
+          root:
+            enabled: true
       local_package_repos: ${_param:local_package_repos}
       timezone: UTC
       locale:
diff --git a/panko/server/cluster.yml b/panko/server/cluster.yml
index d641f36..3a4cb65 100644
--- a/panko/server/cluster.yml
+++ b/panko/server/cluster.yml
@@ -11,6 +11,12 @@
     panko_memcached_node03_address: ${_param:cluster_node03_address}
     # Keep events in database for 30 days
     panko_event_time_to_live: 2592000
+  linux:
+    system:
+      cron:
+        user:
+          panko:
+            enabled: true
   panko:
     server:
       role: ${_param:openstack_node_role}
@@ -32,4 +38,4 @@
       expirer:
         cron:
           minute: 0
-          hour: 2
\ No newline at end of file
+          hour: 2
diff --git a/panko/server/single.yml b/panko/server/single.yml
index 497b21e..4ba2787 100644
--- a/panko/server/single.yml
+++ b/panko/server/single.yml
@@ -5,6 +5,12 @@
   _param:
     # Keep events in database for 30 days
     panko_event_time_to_live: 2592000
+  linux:
+    system:
+      cron:
+        user:
+          panko:
+            enabled: true
   panko:
     server:
       role: ${_param:openstack_node_role}
@@ -13,4 +19,4 @@
       expirer:
         cron:
           minute: 0
-          hour: 2
\ No newline at end of file
+          hour: 2
diff --git a/xtrabackup/server/single.yml b/xtrabackup/server/single.yml
index f72a92a..ad06a94 100644
--- a/xtrabackup/server/single.yml
+++ b/xtrabackup/server/single.yml
@@ -4,3 +4,9 @@
   _param:
     xtrabackup_qpress_source: pkg
     xtrabackup_qpress_source_name: qpress
+  linux:
+    system:
+      cron:
+        user:
+          xtrabackup:
+            enabled: true
diff --git a/zookeeper/backup/server/single.yml b/zookeeper/backup/server/single.yml
index 6796d8a..a97df06 100644
--- a/zookeeper/backup/server/single.yml
+++ b/zookeeper/backup/server/single.yml
@@ -3,6 +3,12 @@
 parameters:
   _param:
     zookeeper_backup_public_key: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCzLUiHKAjfFXiZ3fsgx35uXF6VivfC5WFafu4QMalxmj6W+s277oCfdWA8Du5f1wtQXM73VQ5nHkXhM2UIfUMarsyhXK+BxKVrcgEBNHdKlDytaecUPyuOxTDdGWhN/DPv5/vL8NYWweEYBbNbLgU0Td7Rvm52TUXKThIDjeF7XDxX4ShXWipBSwU4boOUBtR8KWfga8fsqeBN+eacuAQFR3MrrOfVvAuWW6Bsf047cmd+V6Qv0raoW73Nu4M/ZAdTsaR5k62a0cHsSRoi3hCmNRqw+CZaQi8prQU6t26eWPEtznjp5EkPF+LLh8LxUoCfWqWT+Lxe8QQwT1nx/LCN
+  linux:
+    system:
+      cron:
+        user:
+          zookeeper:
+            enabled: true
   zookeeper:
     backup:
       server: