Bug 1369591 - When stack is deleted, nodes are not freed up
Summary: When stack is deleted, nodes are not freed up
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: documentation
Version: 9.0 (Mitaka)
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
: 11.0 (Ocata)
Assignee: RHOS Documentation Team
QA Contact: RHOS Documentation Team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-08-23 21:18 UTC by bigswitch
Modified: 2018-04-24 00:34 UTC (History)
14 users (show)

Fixed In Version:
Doc Type: Known Issue
Doc Text:
When you enter the `openstack stack delete` command while the nodes are still being deployed, it is possible that they remain in that being-deployed state and will not be deleted. Consequently, you will not be able to deploy any new nodes onto the space, blocked by the undeleted nodes. To avoid this situation, wait until all the nodes have been deployed completely, before entering the `openstack stack delete` command. Alternatively, you can manually delete the nodes with the `nova delete <node>` command.
Clone Of:
Environment:
Last Closed: 2018-04-24 00:34:32 UTC
Target Upstream Version:

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System ID Private Priority Status Summary Last Updated
Launchpad 1477490 0 None None None 2016-09-19 15:43:32 UTC

Description bigswitch 2016-08-23 21:18:07 UTC 
Description of problem:
Seen in rhosp9 RC release. When a stack is deleted, deployed nodes are still showing in ironic and not freeup. Because of this subsequent deployment will fail with no host found error:


[stack@vm-239-rhosp9 images]$ nova list
+----+------+--------+------------+-------------+----------+
| ID | Name | Status | Task State | Power State | Networks |
+----+------+--------+------------+-------------+----------+
+----+------+--------+------------+-------------+----------+
[stack@vm-239-rhosp9 images]$ ironic node-list
+--------------------------------------+------+--------------------------------------+-------------+--------------------+-------------+
| UUID                                 | Name | Instance UUID                        | Power State | Provisioning State | Maintenance |
+--------------------------------------+------+--------------------------------------+-------------+--------------------+-------------+
| 5a542281-4ce7-4464-b544-f6cf49a95574 | None | 41b73bd1-5a72-4952-ae0f-4ada8a977790 | power on    | active             | False       |
| 8b60a104-fabc-45af-99d5-b03fb02fcbd7 | None | a255e2b6-2196-4997-af16-03eccbfc3923 | power on    | active             | False       |
| ea079ff3-ef70-4755-b857-5746274d6de4 | None | eb927b79-5f4f-49db-8fbc-ab8b5bc2afd1 | power on    | active             | False       |
| a3e473a6-fa3d-40c4-903b-ae9a84a29c51 | None | 99138ff1-5986-4d33-911c-00e0a79d03ab | power on    | active             | False       |
| 795955e0-67d7-4c85-bd03-8a9a30a18b1f | None | 4bb68f6d-4056-456a-b147-e51404f6e3c1 | power on    | active             | False       |
| fa03f0aa-e781-4299-950f-035ad5a5b9d8 | None | fab10619-b409-4d8c-8c0f-d8219e157a2f | power on    | active             | False       |
+--------------------------------------+------+--------------------------------------+-------------+--------------------+-------------+
[stack@vm-239-rhosp9 images]$ heat stack-list
WARNING (shell) "heat stack-list" is deprecated, please use "openstack stack list" instead
+----+------------+--------------+---------------+--------------+
| id | stack_name | stack_status | creation_time | updated_time |
+----+------------+--------------+---------------+--------------+
+----+------------+--------------+---------------+--------------+

[stack@vm-239-rhosp9 images]$ ironic node-show 5a542281-4ce7-4464-b544-f6cf49a95574
+------------------------+--------------------------------------------------------------------------+
| Property               | Value                                                                    |
+------------------------+--------------------------------------------------------------------------+
| chassis_uuid           |                                                                          |
| clean_step             | {}                                                                       |
| console_enabled        | False                                                                    |
| created_at             | 2016-08-22T23:30:23+00:00                                                |
| driver                 | pxe_ipmitool                                                             |
| driver_info            | {u'ipmi_password': u'******', u'ipmi_address': u'10.8.68.143',           |
|                        | u'ipmi_username': u'root', u'deploy_kernel': u'34b0ed6f-204d-4396-b76e-  |
|                        | f18a0f93d502', u'deploy_ramdisk': u'7a11d1ee-                            |
|                        | fad3-439c-8608-684074e636cc'}                                            |
| driver_internal_info   | {u'agent_url': u'http://192.0.2.11:9999', u'root_uuid_or_disk_id':       |
|                        | u'b54ea848-41bd-44e5-be53-307e44c9845e', u'is_whole_disk_image': False,  |
|                        | u'agent_last_heartbeat': 1471984424}                                     |
| extra                  | {u'hardware_swift_object': u'extra_hardware-                             |
|                        | 5a542281-4ce7-4464-b544-f6cf49a95574'}                                   |
| inspection_finished_at | None                                                                     |
| inspection_started_at  | None                                                                     |
| instance_info          | {u'ramdisk': u'320fc4f0-2194-435f-80f7-b02867764fd7', u'kernel': u       |
|                        | '37a1e30c-afcb-41cc-8108-08b257b51cf8', u'root_gb': u'40',               |
|                        | u'display_name': u'overcloud-controller-pvfabric-0', u'image_source':    |
|                        | u'f5ed4d30-0871-4fc7-b52d-f7309596485d', u'capabilities': u'{"profile":  |
|                        | "control", "boot_option": "local"}', u'memory_mb': u'4096', u'vcpus':    |
|                        | u'1', u'deploy_key': u'RDG4UF3UJHHO5AR5SH09C53JVYL7RRY8', u'local_gb':   |
|                        | u'464', u'configdrive': u'H4sICC+yvFcC/3RtcGY0ZzlHZgDt3Wtz49h54HFo7LWdXl |
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|                        | 3/yFIDAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
|                        | AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
|                        | AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
|                        | AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
|                        | AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
|                        | AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
|                        | AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
|                        | AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
|                        | AAAAAAAAAAAAAAAAAAAAAAAAAAAL4B/j8n/6Q4AEAHAA==', u'swap_mb': u'0'}       |
| instance_uuid          | 41b73bd1-5a72-4952-ae0f-4ada8a977790                                     |
| last_error             | None                                                                     |
| maintenance            | False                                                                    |
| maintenance_reason     | None                                                                     |
| name                   | None                                                                     |
| power_state            | power on                                                                 |
| properties             | {u'memory_mb': u'16384', u'cpu_arch': u'x86_64', u'local_gb': u'464',    |
|                        | u'cpus': u'4', u'capabilities':                                          |
|                        | u'profile:control,node:controller-0,boot_option:local'}                  |
| provision_state        | active                                                                   |
| provision_updated_at   | 2016-08-23T21:04:25+00:00                                                |
| raid_config            |                                                                          |
| reservation            | None                                                                     |
| target_power_state     | None                                                                     |
| target_provision_state | None                                                                     |
| target_raid_config     |                                                                          |
| updated_at             | 2016-08-23T21:04:25+00:00                                                |
| uuid                   | 5a542281-4ce7-4464-b544-f6cf49a95574                                     |
+------------------------+--------------------------------------------------------------------------+


Version-Release number of selected component (if applicable):
RHOSP9 RC

Steps to Reproduce:
1.Deploy overcloud
2.delete overcloud stack before its complete
3.delete might fail a few times, keep repeating till the stack is deleted
4.stack will be deleted and nova list is empty, but ironic node-list shows node with instance deployed

Actual results:


Expected results:


Additional info:
Comment 2 Dmitry Tantsur 2016-09-06 15:48:07 UTC 
Hello!

It looks like Nova hasn't even called into Ironic for node deletion. Could you please provide nova-compute logs?
Comment 3 bigswitch 2016-09-06 16:44:48 UTC 
I'll need to reproduce this as it was seen couple of times, but we managed to deploy the overcloud and I am testing the Openstack setup now.
Comment 4 Lucas Alvares Gomes 2016-09-19 15:43:33 UTC 
Apparently you are hitting this problem here: https://bugs.launchpad.net/ironic/+bug/1477490

(Added to the external links list)
Comment 5 Dan Sneddon 2016-10-14 19:29:46 UTC 
I think this is a race condition. If the nodes are in state DEPLOYING, then they won't be deleted when the stack is deleted. I run into this sometimes when I kill a deployment shortly after running the deployment command, but before the nodes are built.

The workaround for me has always been to not run stack delete until the nodes are further along in the build process, or to manually delete the nodes and rerun the stack delete.

Since this is a sporadic condition, it might be best to document it for the time being, but we can think about a more permanent fix down the road. For now I am adding a Doc Text as a known issue, and kicking this down the road to OSP 11, although it may not be implemented until after that.
Comment 10 Bob Fournier 2017-07-20 16:27:59 UTC 
Dmitry - are we only planning on doc'ing this, so the component can change to documentation, or will we handle node deletion if delete command is run during deployment?
Comment 11 Bob Fournier 2018-02-06 21:41:45 UTC 
I should have done this 6 months ago, but changing this to documentation.  I believe the docs have been updated so feel free to close this out.
Comment 12 Julie 2018-04-20 01:34:08 UTC 
(In reply to Bob Fournier from comment #11)
> I should have done this 6 months ago, but changing this to documentation.  I
> believe the docs have been updated so feel free to close this out.

hi Bob, is this still a known issue for OSP 12 and upcoming OSP 13?

Cheers,
Julie
Comment 13 Bob Fournier 2018-04-20 11:38:16 UTC 
Julie - we have not had any reports of this occurring in OSP-12 or 13 but there has been no explicit fix for this in these releases.  As running the stack delete command while a deployment is in progress isn't a recommended action I think its safe to leave the release note.
Comment 14 Julie 2018-04-24 00:34:32 UTC 
The known issue was published here: 
https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/11/html-single/release_notes/#idm139726258172912

Closing this bug. Please feel free to let me know if anyone has concerns.

Cheers,
Julie
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