Bug 1369591 – When stack is deleted, nodes are not freed up

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Bug 1369591 - When stack is deleted, nodes are not freed up

Summary:	When stack is deleted, nodes are not freed up

Status:	CLOSED CURRENTRELEASE

Aliases:	None

Product:	Red Hat OpenStack
Classification:	Red Hat
Component:	documentation (Show other bugs)
Sub Component:
Version:	9.0 (Mitaka)
Hardware:	Unspecified Unspecified

Priority	medium Severity medium
Target Milestone:	---
Target Release:	11.0 (Ocata)
Assigned To:	RHOS Documentation Team
QA Contact:	RHOS Documentation Team
Docs Contact:

URL:
Whiteboard:
Keywords:	Triaged

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2016-08-23 17:18 EDT by bigswitch
Modified:	2018-04-23 20:34 EDT (History)
CC List:	14 users (show)

See Also:
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.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2018-04-23 20:34:32 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Launchpad	1477490	None	None	None	2016-09-19 11:43 EDT

Groups: None (edit)

Description bigswitch 2016-08-23 17:18:07 EDT

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 11:48:07 EDT

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 12:44:48 EDT

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 11:43:33 EDT

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 15:29:46 EDT

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 12:27:59 EDT

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 16:41:45 EST

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 2018-04-19 21:34:08 EDT

(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 07:38:16 EDT

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 2018-04-23 20:34:32 EDT

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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