I have registered the ironic's node and associated the resource class,Here are the details.
(virtualenv) [root@openstack01 ~]# openstack baremetal node show baremetal-node
+------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field                  | Value                                                                                                                                                                                                                                   |
+------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| allocation_uuid        | None                                                                                                                                                                                                                                    |
| automated_clean        | None                                                                                                                                                                                                                                    |
| bios_interface         | no-bios                                                                                                                                                                                                                                 |
| boot_interface         | pxe                                                                                                                                                                                                                                     |
| chassis_uuid           | None                                                                                                                                                                                                                                    |
| clean_step             | {}                                                                                                                                                                                                                                      |
| conductor              | openstack02                                                                                                                                                                                                                             |
| conductor_group        |                                                                                                                                                                                                                                         |
| console_enabled        | False                                                                                                                                                                                                                                   |
| console_interface      | no-console                                                                                                                                                                                                                              |
| created_at             | 2020-03-11T09:50:09+00:00                                                                                                                                                                                                               |
| deploy_interface       | iscsi                                                                                                                                                                                                                                   |
| deploy_step            | {}                                                                                                                                                                                                                                      |
| description            | None                                                                                                                                                                                                                                    |
| driver                 | ipmi                                                                                                                                                                                                                                    |
| driver_info            | {u'ipmi_port': 623, u'ipmi_username': u'zhangss', u'deploy_kernel': u'47de6011-e4c6-4ffc-b762-deaa0a7d5c2e', u'ipmi_address': u'10.16.136.22', u'deploy_ramdisk': u'bf47e3ec-e329-4405-93bd-e38790acaa4f', u'ipmi_password': u'******'} |
| driver_internal_info   | {}                                                                                                                                                                                                                                      |
| extra                  | {}                                                                                                                                                                                                                                      |
| fault                  | None                                                                                                                                                                                                                                    |
| inspect_interface      | no-inspect                                                                                                                                                                                                                              |
| inspection_finished_at | None                                                                                                                                                                                                                                    |
| inspection_started_at  | None                                                                                                                                                                                                                                    |
| instance_info          | {}                                                                                                                                                                                                                                      |
| instance_uuid          | None                                                                                                                                                                                                                                    |
| last_error             | None                                                                                                                                                                                                                                    |
| maintenance            | False                                                                                                                                                                                                                                   |
| maintenance_reason     | None                                                                                                                                                                                                                                    |
| management_interface   | ipmitool                                                                                                                                                                                                                                |
| name                   | baremetal-node                                                                                                                                                                                                                          |
| network_interface      | flat                                                                                                                                                                                                                                    |
| owner                  | None                                                                                                                                                                                                                                    |
| power_interface        | ipmitool                                                                                                                                                                                                                                |
| power_state            | power on                                                                                                                                                                                                                                |
| properties             | {u'memory_mb': 49152, u'cpu_arch': u'x86_64', u'local_gb': 477, u'cpus': 16}                                                                                                                                                            |
| protected              | False                                                                                                                                                                                                                                   |
| protected_reason       | None                                                                                                                                                                                                                                    |
| provision_state        | available                                                                                                                                                                                                                               |
| provision_updated_at   | 2020-03-11T10:08:13+00:00                                                                                                                                                                                                               |
| raid_config            | {}                                                                                                                                                                                                                                      |
| raid_interface         | no-raid                                                                                                                                                                                                                                 |
| rescue_interface       | no-rescue                                                                                                                                                                                                                               |
| reservation            | None                                                                                                                                                                                                                                    |
| resource_class         | baremetal-resource-class                                                                                                                                                                                                                |
| storage_interface      | noop                                                                                                                                                                                                                                    |
| target_power_state     | None                                                                                                                                                                                                                                    |
| target_provision_state | None                                                                                                                                                                                                                                    |
| target_raid_config     | {}                                                                                                                                                                                                                                      |
| traits                 | []                                                                                                                                                                                                                                      |
| updated_at             | 2020-03-11T14:24:19+00:00                                                                                                                                                                                                               |
| uuid                   | e73df8d1-dd61-4c44-ab90-c2d4c59417be                                                                                                                                                                                                    |
| vendor_interface       | ipmitool                                                                                                                                                                                                                                |
+------------------------+----------------------------------------------------------------------------------------------

(virtualenv) [root@openstack01 ~]# openstack flavor show my-baremetal-flavor 
+----------------------------+-----------------------------------------------+
| Field                      | Value                                         |
+----------------------------+-----------------------------------------------+
| OS-FLV-DISABLED:disabled   | False                                         |
| OS-FLV-EXT-DATA:ephemeral  | 0                                             |
| access_project_ids         | None                                          |
| disk                       | 477                                           |
| id                         | e5a95e46-c9b7-432f-b376-ec31c7f0eebc          |
| name                       | my-baremetal-flavor                           |
| os-flavor-access:is_public | True                                          |
| properties                 | resources:CUSTOM_BAREMETAL_RESOURCE_CLASS='1' |
| ram                        | 49152                                         |
| rxtx_factor                | 1.0                                           |
| swap                       |                                               |
| vcpus                      | 16                                            |
+----------------------------+-----------------------------------------------+