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second compute added, command "nova-status upgrade check" warning for Check: Resource Providers

Hi there, I want you guys asked about Cell_V2. Recently I added a second compute node to Ocata/Ubuntu deployment followed oficial Openstack guide. it was OK with only one compute node. Also now compute nodes are OK: root@controller:~# openstack compute service list

| ID | Binary | Host | Zone | Status | State | Updated At |

| 3 | nova-consoleauth | controller | internal | enabled | up | 2017-08-08T19:20:44.000000 |

| 4 | nova-scheduler | controller | internal | enabled | up | 2017-08-08T19:20:45.000000 |

| 5 | nova-conductor | controller | internal | enabled | up | 2017-08-08T19:20:44.000000 |

| 6 | nova-compute | compute | nova | enabled | up | 2017-08-08T19:20:45.000000 |

| 7 | nova-compute | compute2 | nova | enabled | up | 2017-08-08T19:20:49.000000 |

nova cell is OK too

root@controller:~# nova-manage cell_v2 list_cells

| Name | UUID |

| cell0 | 00000000-0000-0000-0000-000000000000

| cell1 | e518718f-4c4e-404f-8a4e-78e71d50c7cc |

However for command "nova-status upgrade check". there is a messages that second compute node cannot be use

| Upgrade Check Results |

| Check: Cells v2 | Result: Success | Details: None |

| Check: Placement API | Result: Success | Details: None |

| Check: Resource Providers | | Result: Warning |

| Details: There are 1 compute resource providers and 2 compute nodes in the deployment. Ideally the number of compute resource providers should equal the number of enabled compute nodes otherwise the cloud may be underutilized. |

I checked question related to cell/Placement in Ask.openstack.org but not find any similar issue answered. how can I added second or subsequently compute node to Cell_V2.

thanks in advance