Fix x509 on Pike

Change-Id: I0fa44c510d6af091386f63e2f19fe596358d4e27
Related-Prod: https://mirantis.jira.com/browse/PROD-25028
diff --git a/README.rst b/README.rst
index 4c1d819..7b512c4 100644
--- a/README.rst
+++ b/README.rst
@@ -335,6 +335,41 @@
               sinks:
                 - meter_sink
 
+Enable x509 and ssl communication between Ceilometer and Rabbitmq cluster.
+---------------------
+By default communication between Ceilometer and Rabbitmq is unsecure.
+
+ceilometer:
+  server:
+    message_queue:
+      x509:
+        enabled: True
+
+ceilometer:
+  agent:
+    message_queue:
+      x509:
+        enabled: True
+
+You able to set custom certificates in pillar:
+
+ceilometer:
+  server:
+    message_queue:
+      x509:
+        ca_file: (ca certificate path)
+        cert_file: (certificate path)
+        key_file: (key path)
+
+ceilometer:
+  agent:
+    message_queue:
+      x509:
+        ca_file: (ca certificate path)
+        cert_file: (certificate path)
+        key_file: (key path)
+
+
 
 More Information
 ================