- openstack-discuss - lists.openstack.org

[Nova] Unable to fetch CPU/RAM allocation ratios via /os-hypervisors API (Nova API v2.91 vs v2.1 support)
by Thamanna Farhath 19 Jul '25

19 Jul '25

Hello OpenStack community, I'm working with OpenStack (2023.1 kolla ansible) Nova and using the /os-hypervisors API to gather hypervisor information. I noticed that the CPU and RAM allocation ratios (which are shown in the Horizon dashboard) are not included in the response from: GET /os-hypervisors GET /os-hypervisors/{id} We're currently using Nova API version 2.91, but I see that the /os-hypervisors API appears to support only up to version 2.1, I’d like to clarify the following points: Is it expected behavior that the /os-hypervisors API does not return CPU and RAM allocation ratios? Is there any API endpoint that exposes these ratios programmatically? As we are using Nova API version 2.91, but /os-hypervisors seems limited to v2.1, is this a known limitation or design choice? If the only source of truth is the nova.conf configuration file (e.g., cpu_allocation_ratio, ram_allocation_ratio), is there any plan to expose this via API in future releases? It would be helpful to know if this is something we should work around by manually collecting config values, or if there's a more appropriate method in modern Nova setups. Thamanna Farhath Associate Engineer R&D mailto:manoj.kumar@zybisys.com thamanna.f(a)zybisys.com https://www.zybisys.com https://in.linkedin.com/company/zybisys https://www.facebook.com/Zybisys/ https://www.instagram.com/ZyBiSys/ https://www.youtube.com/@zybisys https://www.facebook.com/Zybisys/ Disclaimer : The content of this email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to which they are addressed. If you have received this email in error, please notify the sender and remove the messages from your system. If you are not the named addressee, it is strictly forbidden for you to share, circulate, distribute or copy any part of this e-mail to any third party without the written consent of the sender. E-mail transmission cannot be guaranteed to be secured or error free as information could be intercepted, corrupted, lost, destroyed, arrive late, incomplete, or may contain viruses. Therefore, we do not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. The recipient should check this e-mail and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email."

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[mariadb][keystone][blazar] Deadlock error on Galera cluster
by Winicius Allan 19 Jul '25

19 Jul '25

Hi community o/ Suddenly, I noticed that the login on the dashboard wasn't working, so I checked the keystone logs. I saw some entries like that: 2025-07-10 00:53:45.120 23 ERROR sqlalchemy.pool.impl.QueuePool oslo_db.exception.DBDeadlock: (pymysql.err.OperationalError) (1205, 'Lock wait timeout exceeded; try restarting transaction') Nova-conductor was also showing messages like these. At the same time, blazer-manager was logging after every _process_event calling: ERROR sqlalchemy.exc.TimeoutError: QueuePool limit of size 1 overflow 50 reached, connection timed out, timeout 30.00 I do not know if it's related to the _process_event method that batches events concurrently[1], and the DB was locked. Well... I increased the max_pool_size from 1 to 2 on blazar-manager, and that message stops showing. Does anyone know what can cause this deadlock generally? I'd like to ask another question: I have three controllers in my environment. Why do controllers with no active VIP address bind connections on the MySQL port, for example: tcp ESTAB 0 0 10.0.0.105:3306 10.0.0.107:50642 users:(("mariadbd",pid=977010,fd=1089)) [1] https://github.com/openstack/blazar/blob/stable/2024.1/blazar/manager/servi… Best regards.

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[ops] Very basic newby questions
by Leroy Tennison 18 Jul '25

18 Jul '25

I am looking for a solution to automatically move (upon request) running VMs from one hypervisor to another. The current hypervisors are KVM/QEMU. Just looking at the documentation I am becoming overwhelmed. Questions (A URL which directly addresses the question is quite acceptable): Does OpenStack work with existing hypervisors or would existing hypervisors have to be "converted" (somehow) to OpenStack? If it can be used with existing hypervisors, is there a how-to for this specific task (I understand that OpenStack can do many things). If OpenStack can't be used with existing hypervisors, are you aware of solutions for this need? I have looked at ProxMox but it appears to want centralized storage and very fast networks which doesn't match the environment. Thank you for your help.

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[neutron] Drivers meeting canceled Friday, July 18th and 25th
by Brian Haley 18 Jul '25

18 Jul '25

Hello Neutrinos: As discussed in our weekly meeting, I am going to cancel the next two Drivers meetings as there is no agenda and I am on PTO. Just a reminder there are still open specs that need review, list is at [0]. Have a nice weekend/week! -Brian [0] https://review.opendev.org/q/status:open+project:openstack/neutron-specs

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[ops][api][all] What are we going to do about pastedeploy usage?
by Stephen Finucane 17 Jul '25

17 Jul '25

oslo.service is going through a lot of churn right now as part of the eventlet migration. We recently noticed that some unrelated WSGI routing code had been inadvertently deprecated, and moved to undeprecate this [1]. In the long-term, however, this code doesn't really belong in oslo.service and should be moved elsewhere. I took a stab at bootstrapping an oslo.wsgi package, and after some hacking I arrived at a dependencies list containing the following: * Paste [2] * PasteDeploy [3] * Routes [4] * WebOb [5] As some of you might know, all of these packages are minimally maintained bordering on unmaintained. I'm not entirely sure we want to want to bootstrap a new project using these libraries as opposed to migrating off of them. My question is this: how important is the pastedeploy framework and the paste.ini files nowadays, particularly for deployers? While their use is relatively consistent across projects (see below), not every service uses them and for those that don't, I personally haven't heard complaints about their absence. Rather than migrating the pastedeploy stuff elsewhere, would it make more sense for affected projects to simply define a static set of middleware (with some config knobs for those we want to be able to enable/disable) and call it a day? Cheers, Stephen PS: This topic came up about 18 months ago [6], but we don't appear to have reached a conclusion. Thus my bringing it up again. [1] https://review.opendev.org/c/openstack/oslo.service/+/954055 [2] https://pypi.org/project/Paste/#history [3] https://pypi.org/project/PasteDeploy/#history [4] https://pypi.org/project/Routes/#history [5] https://pypi.org/project/WebOb/#history [6] https://lists.openstack.org/archives/list/openstack-discuss@lists.openstack… --- fwict, the following services all rely on this combo to build their own frameworks, with Nova most likely the progenitor in each case (I'm guessing) * Nova * Barbican * Cinder * Designate * Freezer * Glance * Heat * Manila * Monasca * Neutron * Swift * Trove * Vitrage * Watcher The following services do *not* use these libraries: * Cyborg (pecan) * Ironic (pecan) * Keystone (Flask + Flask-RESTful, with some webob) * Magnum (pecan) * Masakari (homegrown framework using webob) * Zaqar (falcon) * Zun (Flask)

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[Kolla] Looking for a Support Provider
by Buddhika S. Godakuru - University of Kelaniya 17 Jul '25

17 Jul '25

Hi All, We are a University in Sri Lanka, and we have a small Openstack (2023.1) deployment using Kayobe. The on-prem cloud is currently operational, but currently there is only one member who has the idea about the design, and implementation of hardware/OS/configuration/network setup. So the management is trying to find an additional entity who can support in an emergency, as well as to avoid being dependant on a single person. Are there any person/institute/person who can support our setup (not day to day activities) in case of service/hardware failure, preferably within Sri Lanka. Thank you -- බුද්ධික සංජීව ගොඩාකුරු Buddhika Sanjeewa Godakuru Systems Analyst/Programmer Information and Communication Technology Centre (ICTC) University of Kelaniya, Sri Lanka, Kelaniya, Sri Lanka. -- **** *University of Kelaniya, Sri Lanka, accepts no liability for the content of this email or for the consequences of any actions taken on the basis of the information provided unless that information is subsequently confirmed in writing. * *If you are not the intended recipient, this email and/or any information it contains should not be copied, disclosed, retained or used by you or any other party, and the email and all its contents should be promptly deleted fully, and the sender informed. * ** ** *E-mail transmissions cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete. * ****

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Re: [cinder] How to retype while maintaining volume usage
by Yuta Kambe (Fujitsu) 17 Jul '25

17 Jul '25

Hi Eugen, Thank you for your reply. I've confirmed that 'rbd sparsify' can increase available space. However, I believe there's room for improvement in the retype implementation. Currently, retyping between Ceph backends causes zero-filling, which unnecessarily consumes time and storage space. This is likely to happen frequently, for example, with retypes between Ceph's HDD and SSD backends, and the Ceph administrator would need to run 'rbd sparsify' frequently. Are there any improvements to the retype implementation being considered in the community? I would also appreciate hearing your opinion on the need for improvement. Best regards,

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[horizon] Cancel weekly meetings on 2025-07-23 and 2025-07-30
by Tatiana Ovchinnikova 16 Jul '25

16 Jul '25

Hello team, I am cancelling the two upcoming weekly meetings since about a half of the members are on PTO. See you all in three weeks, August 6th! With kind regards, Tatiana

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[publiccloud-sig] Chairing Public Cloud SIG
by Kees Meijs | Nefos 16 Jul '25

16 Jul '25

Hi all, Recently Felix Kronlage-Dammers asked for someone to take over chairing the bi-weekly Public Cloud SIG. After giving it some thought, I proposed to continue his legacy from the next round and on. Unless someone would object, I'll be sending out meeting invitations from here on. Cheers, Kees __ Kees Meijs BICT Nefos Cloud & IT <https://nefos.com/contact> Nefos IT bv Burgemeester Mollaan 34a 5582 CK Waalre - NL kvk 66494931 +31 (0)88 2088 188 <tel:+31882088188> nefos.com <https://nefos.com/contact> The information contained in this message is intended for the addressee only and may contain classified information. If you are not the addressee, please delete this message and notify the sender; you should not copy or distribute this message or disclose its contents to anyone. Any views or opinions expressed in this message are those of the individual(s) and not necessarily of the organization. No reliance may be placed on this message without written confirmation from an authorised representative of its contents. No guarantee is implied that this message or any attachment is virus free or has not been intercepted and amended. General terms and conditions ("The NLdigital Terms") apply to all our products and services.

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Short Bitergia dashboard outage due to maintenance
by Ildiko Vancsa 16 Jul '25

16 Jul '25

Hi OpenStack community, I’m reaching out to let you know that the OpenStack Bitergia metrics dashboard[1] will be unavailable for a short period of time due to scheduled maintenance, where the underlying OpenSearch cluster will be updated. Details of the downtime: * Start Date: Thursday, July 17th at 10:00 AM CEST (01:00 AM PDT) * End Date: Thursday, July 17th at 12:00 PM CEST (03:00 AM PDT) __During this maintenance window, the dashboard will be inaccessible.__ Thank you for your understanding. Best Regards, Ildikó [1] https://openstack.biterg.io/app/dashboards#/view/Overview

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