doc: rgw: make a note abt system users vs normal users

Mention that system users don't behave like normal users in context of
normal rest operations

Fixes: http://tracker.ceph.com/issues/18889
Signed-off-by: Abhishek Lekshmanan <abhishek@suse.com>

diff --git a/doc/radosgw/multisite.rst b/doc/radosgw/multisite.rst
index 67d0ea9c51dbf7a0b6021bdb590d0dbd637f54a9..f6cdd3ddac1f11d349f4f9914ea8aed1399fa2fa 100644 (file)
--- a/doc/radosgw/multisite.rst
+++ b/doc/radosgw/multisite.rst
@@ -294,6 +294,12 @@ keys would be used when configuring the second zone::
   }
 
 
+.. note:: Please note that system users have super user privileges over the
+          entire zone, and will not behave like normal users for rest operations
+          like creating buckets, objects etc. as the output would contain
+          additional json fields for maintaining metadata.
+
+
 Update the period
 -----------------