February 2024 - openstack-discuss

Live migration fails
by Szabo, Istvan (Agoda) 06 Aug '24

06 Aug '24

Hi, I have couple of compute nodes where the live migration fails with existing vms. When I quickly spawn a vm and try live migration it works so I assume shouldn't be a big problem with the compute node. However I have many existing vms where it fails with a servername not found. /var/log/nova/nova-conductor.log:2021-04-21 14:47:12.605 227612 ERROR nova.conductor.tasks.migrate [req-f4067a26-a233-4673-8c07-9a8a290980b0 dce35e6eceea4312bb0baa0510cef363 ca7e35079f4440c78bd9870724b9638b - default default] [instance: 1517a2ac-3b51-4d8d-80b3-89a5614d1ae0] Unable to find record for source node servername on servername: ComputeHostNotFound: Compute host servername could not be found. /var/log/nova/nova-conductor.log:2021-04-21 14:47:12.605 227612 WARNING nova.scheduler.utils [req-f4067a26-a233-4673-8c07-9a8a290980b0 dce35e6eceea4312bb0baa0510cef363 ca7e35079f4440c78bd9870724b9638b - default default] Failed to compute_task_migrate_server: Compute host servername could not be found.: ComputeHostNotFound: Compute host servername could not be found. /var/log/nova/nova-conductor.log:2021-04-21 14:47:12.605 227612 WARNING nova.scheduler.utils [req-f4067a26-a233-4673-8c07-9a8a290980b0 dce35e6eceea4312bb0baa0510cef363 ca7e35079f4440c78bd9870724b9638b - default default] [instance: 1517a2ac-3b51-4d8d-80b3-89a5614d1ae0] Setting instance to ACTIVE state.: ComputeHostNotFound: Compute host servername could not be found. /var/log/nova/nova-conductor.log:2021-04-21 14:47:12.672 227612 ERROR oslo_messaging.rpc.server [req-f4067a26-a233-4673-8c07-9a8a290980b0 dce35e6eceea4312bb0baa0510cef363 ca7e35079f4440c78bd9870724b9638b - default default] Exception during message handling: ComputeHostNotFound: Compute host am-osfecn-4025 Tried with this command: nova live-migration --block-migrate id. Any idea? Thank you. ________________________________ This message is confidential and is for the sole use of the intended recipient(s). It may also be privileged or otherwise protected by copyright or other legal rules. If you have received it by mistake please let us know by reply email and delete it from your system. It is prohibited to copy this message or disclose its content to anyone. Any confidentiality or privilege is not waived or lost by any mistaken delivery or unauthorized disclosure of the message. All messages sent to and from Agoda may be monitored to ensure compliance with company policies, to protect the company's interests and to remove potential malware. Electronic messages may be intercepted, amended, lost or deleted, or contain viruses.

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[ptl][tc] OpenStack packages PyPi additional external maintainers audit & cleanup
by Ghanshyam Mann 16 May '24

16 May '24

Hi PTLs, As you might know or have seen for your project package on PyPi, OpenStack deliverables on PyPi have additional maintainers, For example, https://pypi.org/project/murano/, https://pypi.org/project/glance/ We should keep only 'openstackci' as a maintainer in PyPi so that releases of OpenStack deliverables can be managed in a single place. Otherwise, we might face the two sets of maintainers' places and packages might get released in PyPi by additional maintainers without the OpenStack project team knowing about it. One such case is in Horizon repo 'xstatic-font-awesome' where a new maintainer is added by an existing additional maintainer and this package was released without the Horizon team knowing about the changes and release. - https://github.com/openstack/xstatic-font-awesome/pull/2 To avoid the 'xstatic-font-awesome' case for other packages, TC discussed it in their weekly meetings[1] and agreed to audit all the OpenStack packages and then clean up the additional maintainers in PyPi (keep only 'openstackci' as maintainers). To help in this task, TC requests project PTL to perform the audit for their project's repo and add comments in the below etherpad. - https://etherpad.opendev.org/p/openstack-pypi-maintainers-cleanup Thanks to knikolla to automate the listing of the OpenStack packages with additional maintainers in PyPi which you can find the result in output.txt at the bottom of this link. I have added the project list of who needs to check their repo in etherpad. - https://gist.github.com/knikolla/7303a65a5ddaa2be553fc6e54619a7a1 Please complete the audit for your project before March 15 so that TC can discuss the next step in vPTG. [1] https://meetings.opendev.org/meetings/tc/2023/tc.2023-01-11-16.00.log.html#… -gmann

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[kolla-ansible] support for FWaaS/LBaaS?
by garcetto 15 May '24

15 May '24

good morning, does kolla support fwaas or lbaas? thank you

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[all][packaging][release][qa] pep-517 and pip 23
by smooney＠redhat.com 06 May '24

06 May '24

hi folks, TL;DR ----- this is a long email so the tl;dr is we should add pyproject.toml ``` [build-system] requires = ["pbr>=5.7.0", "setuptools>=36.6.0", "wheel"] build-backend = "pbr.build" ``` to all openstack projects to supprot pip 23.1+ Long version ------------ As some of you may know the ptg happend last week an done of hte topic raised there was a know limitation in devstack where GLOBAL_VENV=True does not work on centos/fedora derived distros. while i generally dont use centos/fedora derived distros for my daily work i have been using devstack for over 10 years at this point so when im told it broken i ocationlly will go fix it. In this case the issue is not with devstack (it often isnt) and is actully in our collective reliance on a deprecated functionality and how we package openstack today. Back story, for better or worse when openstack was created the landscape of python packaging was significantly different then it is today. To help corodinate our dependcies the openstack comunity went all in on requirements.txt and developed upper-constraits to manage our requirements and developed PBR (python build Reasonableness). both of those approches have served us well and likely will continue to do so for some time. Since then pyproject.toml has started to gain popularity and pep-517 (A build-system independent format for source trees) has been adotpted but so far openstack as a comunity has not embraced those changes. (although pbr already supprot pep-517 :) ). Until now this has not been a problem however with recent release of pip things are now breaking. Problem Context: - openstack does not provide pyporject.toml files - openstack project configure setuptools to use pbr via setup.py - setuptools support generating scripts form entry points(console_scripts) which we use for project binaries( nova- compute, neutron-server, ...) - openstack api services use a pbr extension know as wsgi_scripts which adds a similar functionality for generating wsgi application mains file - devstack due to coming changes in distro to block "sudo pip install" now installs openstack in a single by default on debian distros. on centos/fedora distros it currently almost functional (but not). - devstack installs in editable mode because that is how most developers use devstack for developemnt What changed: - pip 20.2 deprecated support for falling back to calling setup.py when pyproject.toml is not present - https://pip.pypa.io/en/stable/news/#v20-2 - https://github.com/pypa/pip/issues/8368 - at this point when pyproject.yaml is not called pip calls setup.py install [-e] <path to repo or package name> - setup.py invokes pbr to generate wsgi_scripts and other files - in pip 23.1 the fallback was removed https://pip.pypa.io/en/stable/news/#v23-1 - pip now builds a temp local wheel instead of calling setup.py install when pyproject.toml is not found - in editable mode (-e) the default way the wheel is built does not invoke pbr properly to generate the wsgi files - as a result the wsgi files are not installed to the venv bin dir and this causes devstack to fail to start keystone (or any other wsgi api) The fix, there are a few ways to approch this: - clamp pip (https://review.opendev.org/c/openstack/devstack/+/898845) this is a terible idea and it breaks debian - clamping pip below 23.1 works on centos for now however OVS on debian already requires pep 517 for installing - as such when that version of ovs (or other projects start enforcing that) hits centos it will break - add a minimal pyproject.toml to all openstack project - example for keystone https://review.opendev.org/c/openstack/keystone/+/899519 - this example jsut adds the minium pyproject.toml to enable pbr to be used as the build system - it does not remove supprot for setup.py but it will not be used by default going forward whit new version of pip - all config is still in setup.cfg - add pyproject.toml support but remove setup.py support https://review.opendev.org/c/opendev/bindep/+/816741 - this goes one step futrue and actuly nulls out setup.py - we could take this approach if we want to but its not required. The reason for this email is to get agreement on how to support pip 23.1+ My proposal would be to add pyproject.toml with the minimal config required to enable pip 23.2 but not drop the setup.py support in this cycle. i would suggest that we can deprecate installing via setup.py in caracal if that is desirable but not make that change until the next slurp to give time to projects and packages to catch up. if there are no objections to that i would like to ask what is the preferd way to create and submit the patches for the minimal pyproject.toml ``` [build-system] requires = ["pbr>=5.7.0", "setuptools>=36.6.0", "wheel"] build-backend = "pbr.build" ``` i can propose patches to the main project deployed by devstack by default. i.e. nova/neutron ectra but it might be better if someone form the core teams of each project could take on that task and chasing the reviews. if someone has a script to generate a patch for a set of repos that just add the above pyporject.toml then we can use that to keep a consistent topic/commit message across all patches. my proposal for testing this is two fold. in ci we can test the patches are functional by using a DNM patch to devstack to force enable the gloal venv on centos and depend on the set of patches, i will modify https://review.opendev.org/c/openstack/devstack/+/898845 to do that locally we can test that the patch is functional by doing the following substituting keystone for the relevant project. ``` git clone https://opendev.org/openstack/keystone cd keystone python3 -m venv .venv . .venv/bin/activate python3 -m pip install -U pip python3 -m pip install -e . ls .venv/bin/keystone* ``` the ls will not contain the wsgi script with the addition of the pyproject.toml it should. on debian sid i can reproduce the same issue the problem we are seeing on centos 9 now will start impacting other distos eventually so its good to fix this now. if i start proposing this to glance/nova/neutron/cinder/swift/horizon/placement (to get a default devstack working) can i get cores to review? can cores form each project nominate peopel to review or volenteer to do this work. i have created https://etherpad.opendev.org/p/pep-517-and-pip-23 to track this work i have some other work that i think we can do in parallel like addign pyporject.toml support to the pti requirements if we go this way but that i think we can discuss on a governacne patch to updated it. anyway this is a lot to digest so feedback is welcome. if someone else would like to drive this that is also welcome (i.e. tc/release team) regards sean.

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[all][tc] Modernize Python Stack
by Niklas Schwarz 10 Apr '24

10 Apr '24

Hello, I have just ran over the mailing listing post OpenStack 2024.2 testing runtime by Ganshyam Mann [1] on dropping support for python3.8 for the upcoming Openstack 2024.2 release. This post and some small contributions to some openstack components have lead me to write this post. What I would like to suggest to modernize the Python-Stack used for OpenStack. Such a modernization includes: - A current python version - A modern and up to date static code analysis - Introduce type annotations Let me explain what I mean: A current python version: The current supported Python versions are Python 3.8 to Python 3.11 [2]. As of writing, OpenStack Yoga was just moved to unmaintained. To install this release, e.g. on an Ubuntu Jammy operating system the packages are included in the Ubuntu-Packages. The default Python version on an Ubuntu 22.04 operating system is Python3.10. And looking at the support of the Python versions [3] Python 3.8 to 3.10 only receive security updates but the end is near for Python 3.8 to be out of support. The policy defined which Python version should be used for testing [4] will result that Python 3.8 is still used for the OpenStack 2024.1 release [5]. And this will also result in required support for Python3.8 in the upcoming releases of OpenStack. I my opinion the policy should be reworked and the OpenStack releases should be more aggressive on dropping support for older Python versions. Modern features of the language cannot be otherwise be used, therefor improvements in speed, security and general toolchain/ecosystem cannot be fully leveraged. By defining the lower bound of the Python Version we are limiting ourself to this version but we might also reduce the features we can use because of deprecations of the newer versions . A modern and up to date static code analysis: Currently flake8 and pylint are used both of which are modern analysis tools. But their configuration is in my opinion not up to date. Lets have a look at the configuration of the neutron-lib [6]. As seen a lot of rules are disabled by the configuration and are needed at the current moment at the state of the project. In addition some rules need to be adjusted such as the line length (80 characters is a very aggressive limit and on most modern displays a line length of 100 to 120 can fit without any problems, personal opinion). The adjustment of the static code analysis besides opinionated rules will lead me to my third point to modernize the Python stack used Introduce type annotations Python type annotations are well supported in the current Python versions and through the typing package additional types are added. The introduction of type annotations will improve the developer experience. This is also motivated by the Python foundation in pep-484 [7]. Because of the type annotation all modern IDEs can provide (more precise) type hints. The type hints can and in in my experience will reduce the introduction of bugs (accessing members or calling methods, no logical bugs) and will shorten the time to develop a new feature or fix a logical bug and do not run in runtime exceptions. The datatypes passed to a method are clear and we do not need to dig down a rabbithole to find out what is passed to a method. The name of a variable does not always tell the truth. As an example I want to look at a patch [8] for the neutron-vpnaas component. Christian Rohmann and I worked on this patch for the component together (this has also lead me to write this email) to improve the reconciling for VPNaaS. It took as along time to find out that a RouterInformation object is passed in to a method instead of a router but the variable was named router. We both agreed on that in the first place the naming of the variable was wrong but type annotations would have saved us a good amount of time. This does not mean that the naming is not important and that type annotations will save the world, the context which includes the name of variables is important and type annotations will add additional information to the context. And I have just touched the surface on what is possible with the introduction of type annotations, thinking of automatic document generation, test generation, even code generation,... As a reference to my point modernizing the static analysis this can then also include the introduction of mypy to check the types used. Of course such a change cannot be done in one big commit and needs time but I suggest to start adding type annotations and improve the overall code quality of the OpenStack services, starting with the oslo packages as they are used by mostly all OpenStack components. Of course such changes cannot be done for such a huge project in one day. It took a long time to remove support for Python 2. So I do not expect such changes to happen immediately. But it would be nice to have a discussion about it and maybe create a road map and adjust some policy on supported Python versions and create new policies how to write Python code and what additional tools should be used. I can also understand if not everything is possible but the last two points need to be addressed in my opinion. These changes will lead overall to better code quality but most important the introduction to the big code base will be easier for new developers and reviewers will also have a better time. Best regards Niklas [1] https://lists.openstack.org/archives/list/openstack-discuss@lists.openstack… [2] https://docs.openstack.org/tempest/latest/supported_version.html [3] https://devguide.python.org/versions/ [4] https://governance.openstack.org/tc/resolutions/20181024-python-update-proc… [5] https://governance.openstack.org/tc/reference/runtimes/2024.1.html [6] https://github.com/openstack/neutron-lib/blob/master/.pylintrc [7] https://peps.python.org/pep-0484/#rationale-and-goals [8] https://review.opendev.org/c/openstack/neutron-vpnaas/+/875745

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Accessing virsh in openstack wallaby | tripleo
by Swogat Pradhan 24 Mar '24

24 Mar '24

Hi, Can someone please tell me how can i access the virsh utility on the compute node on openstack wallaby? Previously we used nova_libvirt but in wallaby there are multiple containers and i am unable to use virsh utility to edit my domain.xml file. List of containers: [root@dcn01-hci-2 ~]# podman ps | grep nova 10d981158842 172.25.201.68:8787/tripleomaster/openstack-nova-libvirt:current-tripleo kolla_start 2 months ago Up 2 months ago nova_virtlogd_wrapper e91667516afc 172.25.201.68:8787/tripleomaster/openstack-nova-libvirt:current-tripleo kolla_start 2 months ago Up 2 months ago nova_virtsecretd a4b07fe0e833 172.25.201.68:8787/tripleomaster/openstack-nova-libvirt:current-tripleo kolla_start 2 months ago Up 2 months ago nova_virtnodedevd d7e1db393e9c 172.25.201.68:8787/tripleomaster/openstack-nova-libvirt:current-tripleo kolla_start 2 months ago Up 2 months ago nova_virtstoraged 5308a171793e 172.25.201.68:8787/tripleomaster/openstack-nova-libvirt:current-tripleo kolla_start 2 months ago Up 2 months ago nova_virtqemud f490a6249ba1 172.25.201.68:8787/tripleomaster/openstack-nova-libvirt:current-tripleo kolla_start 2 months ago Up 6 weeks ago nova_virtproxyd ab0441e56957 172.25.201.68:8787/tripleomaster/openstack-nova-compute:current-tripleo kolla_start 2 months ago Up 2 months ago (healthy) nova_migration_target f35fbba5b690 172.25.201.68:8787/tripleomaster/openstack-nova-compute:current-tripleo kolla_start 2 months ago Up 6 weeks ago (unhealthy) nova_compute 82bc01993106 172.25.201.68:8787/tripleomaster/openstack-nova-libvirt:current-tripleo /usr/sbin/virtlog... 2 months ago Up 2 months ago Can someone please suggest how I can i edit an instance xml file in this setup? With regards, Swogat Pradhan

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[swift] Can I use oslo.log / oslo.config in swift? Can we make Swift behave like the rest of OpenStack?
by Thomas Goirand 20 Mar '24

20 Mar '24

Hi, Because we had some issues with a bad rebalance in production (we didn't loose any data, but some drives went full...), I attempted to implement the Swift mitigation to prevent disk full scenarios. I found that what upstream recommends [1] is a script that's written in Python 2, and that wouldn't work at all: it's not only very old, it's also a very partial implementation. So I wrote this: https://review.opendev.org/c/openstack/swift/+/907523 But then, I was told (thanks for the review!) that I shouldn't be using oslo.config and/or oslo.log, as other parts of Swift don't do that. I do understand that the rest of Swift is like this, and therefore, the review comment is probably right. However... Back in the days, I would have understood why things would have been written that way: the Oslo libs were young, and not available everywhere, and it was kind of a good idea not to use them. But now, fast forward in 2024, I found that Swift behaving differently from the rest of OpenStack is more a problem than a feature. It's also very frustrating to use the old way with the config_parser, which can't auto-generate the config file and so on. So I am wondering: - is it still the case, that I shouldn't use oslo.config / oslo.log when adding a patch in Swift? - can we revisit this, and convert swift to oslo.config generated config files, and PBR shell-script entry points instead of binary simply dropped into the toplevel bin folder? Can we make swift smarter and behave like the rest of OpenStack? :) Cheers, Thomas Goirand (zigo) [1] https://docs.openstack.org/swift/latest/admin_guide.html#preventing-disk-fu…

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Use Openstack SDK for Swift
by Albert Braden 19 Mar '24

19 Mar '24

I'm writing a script that will use admin credentials to check user projects for containers. I'm already doing something similar for non-swift accounts, doing things like: cloud.network.networks(project_id=projectid): I read here about the Object SDK: https://docs.openstack.org/openstacksdk/latest/user/guides/object_store.html And I tried this: cloud.object_store.containers(project_id=projectid): But I get an error: Invalid query params: project_id I read the Object SDK document here and it doesn't seem to say anything about how to specify a project: https://docs.openstack.org/openstacksdk/latest/user/proxies/object_store.ht… But when I read the Swift API document, I see that I can use "/v1/{account}/{container}", so I'm guessing that there must be a way to do it via the SDK. https://docs.openstack.org/api-ref/object-store/#show-container-details-and… Is it possible to specify the project in an Object SDK call, or do I need to use the old python API for this?

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[Freezer] Is Freezer dead?
by pi3.14＠tuta.io 18 Mar '24

18 Mar '24

Hi folks, is Freezer still supported? I don't see any real development going on with it. Is it recommended to use in a production Cloud environment? Are there other free and open source alternatives to Freezer? Thanks Roby

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[swift] Increase part power on account/container ring
by Thiago De Moraes Teixeira 13 Mar '24

13 Mar '24

Morning, Here we have a cluster with Accounts/Containers ring with part power 8 and our Objects ring with part power 20 (builted later). Now we want to migrate the 'old' Accounts/Containers ring to a new one, with higher part power, like 20. Is there a better way to do this? I'm doing some crazy tests with SAIO and multiples storage nodes, based in build a new ring with part power 20 and just swap the old files (account/container.ring.gz) with the new ones and let the replicators do their jobs, moving *.db files to their new home partition. Until today these tests worked fine, but I don't know how to do it on a large scale, with some terabytes of data. Just wondering about some ways to do that :) And before/after this change, is there any command in swift that i can audit this entire process, ensuring that cluster data remains the same? Thanks! -- _‘Esta mensagem é direcionada apenas para os endereços constantes no cabeçalho inicial. Se você não está listado nos endereços constantes no cabeçalho, pedimos-lhe que desconsidere completamente o conteúdo dessa mensagem e cuja cópia, encaminhamento e/ou execução das ações citadas estão imediatamente anuladas e proibidas’._ * **‘Apesar do Magazine Luiza tomar todas as precauções razoáveis para assegurar que nenhum vírus esteja presente nesse e-mail, a empresa não poderá aceitar a responsabilidade por quaisquer perdas ou danos causados por esse e-mail ou por seus anexos’.*

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