diff --git a/README.rst b/README.rst
index 6a81192..6d420fe 100644
--- a/README.rst
+++ b/README.rst
@@ -1439,6 +1439,38 @@
       compute:
         security_driver: apparmor
 
+
+Change files/directories permissions for nova service:
+=======================================
+In order to change file permissions the following should be set:
+
+'files' - block to set permissions for files.
+- full path to file
+- user ( default value is 'root' ) this parameter is optional.
+- group ( default value is 'nova' ) this parameter is optional
+- mode ( default value is '0640' ) this parameter is optional
+
+'directories' - block to set permissions for directories.
+- full path to directory
+- user ( default value is 'root' ) this parameter is optional
+- group ( default value is 'nova' ) this parameter is optional
+- mode ( default value is '0750' ) this parameter is optional
+
+.. code-block:: yaml
+
+    nova:
+      files:
+        /etc/nova/nova.conf:
+          user: 'root'
+          group: 'nova'
+          mode: '0750'
+      directories:
+        /etc/nova:
+          user: 'root'
+          group: 'nova'
+          mode: '0750'
+
+
 Upgrades
 ========