Hello, I have trying to install ocata on Ubuntu 16.04 , for the time being i have 2 nodes . just can't figure this out.

I have setup Placement API. But get error after restart nova service or reboot

" 017-08-18 08:27:41.496 1422 WARNING nova.scheduler.client.report [req-17911703-827e-402d-85e8-a0bb25003fe3 - - - - -] The placement API endpoint not found. Placement is optional in Newton, but required in Ocata. Please enable the placement service before upgrading.  "


And on the controller node when I run the command .
openstack@controller:~$ sudo nova-status  upgrade check
+-------------------------------------------------------------------+
| Upgrade Check Results                                             |
+-------------------------------------------------------------------+
| Check: Cells v2                                                   |
| Result: Success                                                   |
| Details: None                                                     |
+-------------------------------------------------------------------+
| Check: Placement API                                              |
| Result: Failure                                                   |
| Details: Placement API endpoint not found.                        |
+-------------------------------------------------------------------+
| Check: Resource Providers                                         |
| Result: Warning                                                   |
| Details: There are no compute resource providers in the Placement |
|   service but there are 1 compute nodes in the deployment.        |
|   This means no compute nodes are reporting into the              |
|   Placement service and need to be upgraded and/or fixed.         |
|   See                                                             |
|   http://docs.openstack.org/developer/nova/placement.html         |
|   for more details.                                   

I followed the the ocata guide given in the documentation by the letter .

Divneet