hi,
   i am facing an issue while introspect the bare metal nodes,

error message
"4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf | 2021-04-22T01:41:32 | 2021-04-22T01:41:35 | Failed to set boot device to PXE: Failed to set boot device for node 4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf: Client Error for url: http://10.0.1.202:6385/v1/nodes/4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf/management/boot_device, Node 4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf is locked by host undercloud.localdomain, please retry after the current operation is completed"


(undercloud) [stack@undercloud ~]$ cat /etc/*release
CentOS Linux release 8.3.2011

ussuri version

(undercloud) [stack@undercloud ~]$ openstack image list
/usr/lib/python3.6/site-packages/requests/__init__.py:91: RequestsDependencyWarning: urllib3 (1.26.4) or chardet (3.0.4) doesn't match a supported version!
  RequestsDependencyWarning)
+--------------------------------------+------------------------+--------+
| ID                                   | Name                   | Status |
+--------------------------------------+------------------------+--------+
| 8ddcd168-cc18-4ce2-97c5-c3502ac471a4 | overcloud-full         | active |
| 8d9cfac9-400b-4570-b0b1-baeb175b16c4 | overcloud-full-initrd  | active |
| c561f1d5-41ae-4599-81ea-de2c1e74eae7 | overcloud-full-vmlinuz | active |
+--------------------------------------+------------------------+--------+

Using the command to introspect the node, it was able to discover the node and I could provision the node boot via pxe, and load the image on the node. I could see the login prompt on the server, after some time of provision shut the node down.

openstack overcloud node discover --range 10.0.40.5 --credentials admin:XXXX --introspect --provide

/usr/lib/python3.6/site-packages/requests/__init__.py:91: RequestsDependencyWarning: urllib3 (1.26.4) or chardet (3.0.4) doesn't match a supported version!
  RequestsDependencyWarning)
Successfully probed node IP 10.0.40.5
Successfully registered node UUID 4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf
/usr/lib/python3.6/site-packages/requests/__init__.py:91: RequestsDependencyWarning: urllib3 (1.26.4) or chardet (3.0.4) doesn't match a supported version!
  RequestsDependencyWarning)

PLAY [Baremetal Introspection for multiple Ironic Nodes] ***********************
2021-04-22 07:04:28.978299 | 002590fe-0d22-76eb-1a70-000000000008 |       TASK | Check for required inputs
2021-04-22 07:04:29.002729 | 002590fe-0d22-76eb-1a70-000000000008 |    SKIPPED | Check for required inputs | localhost | item=node_uuids
2021-04-22 07:04:29.004468 | 002590fe-0d22-76eb-1a70-000000000008 |     TIMING | Check for required inputs | localhost | 0:00:00.069134 | 0.0
....
....
....

2021-04-22 07:11:43.261714 | 002590fe-0d22-76eb-1a70-000000000016 |       TASK | Nodes that failed introspection
2021-04-22 07:11:43.296417 | 002590fe-0d22-76eb-1a70-000000000016 |      FATAL | Nodes that failed introspection | localhost | error={
    "msg": " 4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf"
}
2021-04-22 07:11:43.297359 | 002590fe-0d22-76eb-1a70-000000000016 |     TIMING | Nodes that failed introspection | localhost | 0:07:14.362025 | 0.03s

NO MORE HOSTS LEFT *************************************************************

PLAY RECAP *********************************************************************
localhost                  : ok=4    changed=1    unreachable=0    failed=1    skipped=5    rescued=0    ignored=0   
2021-04-22 07:11:43.301553 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Summary Information ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2021-04-22 07:11:43.302101 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Total Tasks: 10         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2021-04-22 07:11:43.302609 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Elapsed Time: 0:07:14.367265 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2021-04-22 07:11:43.303162 |                                 UUID |       Info |       Host |   Task Name |   Run Time
2021-04-22 07:11:43.303740 | 002590fe-0d22-76eb-1a70-000000000014 |    SUMMARY |  localhost | Start baremetal introspection | 434.03s
2021-04-22 07:11:43.304248 | 002590fe-0d22-76eb-1a70-000000000015 |    SUMMARY |  localhost | Nodes that passed introspection | 0.04s
2021-04-22 07:11:43.304814 | 002590fe-0d22-76eb-1a70-000000000016 |    SUMMARY |  localhost | Nodes that failed introspection | 0.03s
2021-04-22 07:11:43.305341 | 002590fe-0d22-76eb-1a70-000000000008 |    SUMMARY |  localhost | Check for required inputs | 0.03s
2021-04-22 07:11:43.305854 | 002590fe-0d22-76eb-1a70-00000000000a |    SUMMARY |  localhost | Set node_uuids_intro fact | 0.02s
2021-04-22 07:11:43.306397 | 002590fe-0d22-76eb-1a70-000000000010 |    SUMMARY |  localhost | Check if validation enabled | 0.02s
2021-04-22 07:11:43.306904 | 002590fe-0d22-76eb-1a70-000000000012 |    SUMMARY |  localhost | Fail if validations are disabled | 0.02s
2021-04-22 07:11:43.307379 | 002590fe-0d22-76eb-1a70-00000000000e |    SUMMARY |  localhost | Set concurrency fact | 0.02s
2021-04-22 07:11:43.307913 | 002590fe-0d22-76eb-1a70-00000000000c |    SUMMARY |  localhost | Notice | 0.02s
2021-04-22 07:11:43.308417 | 002590fe-0d22-76eb-1a70-000000000011 |    SUMMARY |  localhost | Run Validations | 0.02s
2021-04-22 07:11:43.308926 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ End Summary Information ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2021-04-22 07:11:43.309423 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ State Information ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2021-04-22 07:11:43.310021 | ~~~~~~~~~~~~~~~~~~ Number of nodes which did not deploy successfully: 1 ~~~~~~~~~~~~~~~~~
2021-04-22 07:11:43.310545 |  The following node(s) had failures: localhost
2021-04-22 07:11:43.311080 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ansible execution failed. playbook: /usr/share/ansible/tripleo-playbooks/cli-baremetal-introspect.yaml, Run Status: failed, Return Code: 2
Exception occured while running the command
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/tripleoclient/command.py", line 34, in run
    super(Command, self).run(parsed_args)
  File "/usr/lib/python3.6/site-packages/osc_lib/command/command.py", line 41, in run
    return super(Command, self).run(parsed_args)
  File "/usr/lib/python3.6/site-packages/cliff/command.py", line 187, in run
    return_code = self.take_action(parsed_args) or 0
  File "/usr/lib/python3.6/site-packages/tripleoclient/v1/overcloud_node.py", line 462, in take_action
    retry_timeout=parsed_args.retry_timeout,
  File "/usr/lib/python3.6/site-packages/tripleoclient/workflows/baremetal.py", line 193, in introspect
    "retry_timeout": retry_timeout,
  File "/usr/lib/python3.6/site-packages/tripleoclient/utils.py", line 728, in run_ansible_playbook
    raise RuntimeError(err_msg)
RuntimeError: Ansible execution failed. playbook: /usr/share/ansible/tripleo-playbooks/cli-baremetal-introspect.yaml, Run Status: failed, Return Code: 2
Ansible execution failed. playbook: /usr/share/ansible/tripleo-playbooks/cli-baremetal-introspect.yaml, Run Status: failed, Return Code: 2


(undercloud) [stack@undercloud ~]$ openstack baremetal introspection list
/usr/lib/python3.6/site-packages/requests/__init__.py:91: RequestsDependencyWarning: urllib3 (1.26.4) or chardet (3.0.4) doesn't match a supported version!
  RequestsDependencyWarning)
+--------------------------------------+---------------------+---------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| UUID                                 | Started at          | Finished at         | Error                                                                                                                                                                                                                                                                                                                                                                    |
+--------------------------------------+---------------------+---------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf | 2021-04-22T01:41:32 | 2021-04-22T01:41:35 | Failed to set boot device to PXE: Failed to set boot device for node 4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf: Client Error for url: http://10.0.1.202:6385/v1/nodes/4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf/management/boot_device, Node 4bdd55bd-c4d9-4af0-b619-2e0b7b0107cf is locked by host undercloud.localdomain, please retry after the current operation is completed. |
| 3d091348-e9c7-4e99-80e3-df72d332d935 | 2021-04-21T12:36:30 | 2021-04-21T12:36:32 | Failed to set boot device to PXE: Failed to set boot device for node 3d091348-e9c7-4e99-80e3-df72d332d935: Client Error for url: http://10.0.1.202:6385/v1/nodes/3d091348-e9c7-4e99-80e3-df72d332d935/management/boot_device, Node 3d091348-e9c7-4e99-80e3-df72d332d935 is locked by host undercloud.localdomain, please retry after the current operation is completed. |
+--------------------------------------+---------------------+---------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+