update ceph-deploy quick start to add a note for mgr create command

Signed-off-by: Vasu Kulkarni <vasu@redhat.com>

diff --git a/doc/start/quick-ceph-deploy.rst b/doc/start/quick-ceph-deploy.rst
index cc3899a7086f04969c2cf5519ad96a988de4f3c0..f86d7567431c0d293d392b3770cc6e9f6472728b 100644 (file)
--- a/doc/start/quick-ceph-deploy.rst
+++ b/doc/start/quick-ceph-deploy.rst
@@ -118,9 +118,9 @@ configuration details, perform the following steps using ``ceph-deploy``.
 
        ceph-deploy admin node1 node2 node3
 
-#. Deploy a manager daemon.::
+#. Deploy a manager daemon. (Required only for luminous+ builds)::
 
-     ceph-deploy mgr create node1
+     ceph-deploy mgr create node1  *Required only for luminous+ builds, i.e >= 12.x builds*
 
 #. Add three OSDs. For the purposes of these instructions, we assume you have an
    unused disk in each node called ``/dev/vdb``.  *Be sure that the device is not currently in use and does not contain any important data.*