August 2025 - openstack-discuss - lists.openstack.org

[oslo][messaging] Container fix of QManager breaks it for containers
by Dmitriy Rabotyagov 22 Oct '25

22 Oct '25

Hey folks, I wanted to raise attention to a relatively old issue, which has had a patch around since January [1]. Basically a regression [2] was introduced and backported to 2024.1 as part of an attempt to fix QManager execution in containers. However, it does not account for the possibility of os.getpgrp() returning 0 in some edge cases, which makes, for instance, impossible to sync database for Nova during upgrades, if QManager is used. Thus I'm asking to kindly review the [1] as it appears to be a blocker for some upgrades involving affected versions of oslo.messaging. I have not spotted this patch right away, so I proposed an alternative [3], but I'm happy to abandon it in favor of [1]. Thanks in advance for upcoming reviews :) [1] https://review.opendev.org/c/openstack/oslo.messaging/+/939540 [2] https://review.opendev.org/c/openstack/oslo.messaging/+/928034 [3] https://review.opendev.org/c/openstack/oslo.messaging/+/958528

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[openstack][nova]qemu system wont release memory
by Nguyễn Hữu Khôi 29 Sep '25

29 Sep '25

Hello. I have an OpenStack instance that was using 14GB out of 16GB of memory. Later, when it was using only 4GB, I checked the QEMU process on the compute node, and it was still consuming 14GB, this means memory isn't released when usage decreases. Do we have solutions for this? I use Ubuntu 24.04 instances. Nguyen Huu Khoi

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[Neutron][operators] LinuxBridge to OVN Outreach
by Daniel Failing 29 Sep '25

29 Sep '25

Hi all, Following on the good session we had last time discussing migrating out of LinuxBridge between operators, it was proposed to meet again in June. To find a good time slot, please respond to the following survey: https://newdle.cern.ch/newdle/TtbH8Dbv For reference, the notes from last meeting: https://etherpad.opendev.org/p/neutron-lb-ovn-migration Best, Daniel Failing CERN Cloud Infrastructure

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[nova] Nova API call duration increases after upgrading to Caracal
by Chang Xue 21 Sep '25

21 Sep '25

Hello, we recently upgraded from Bobcat to Caracal. After upgrading, an interesting increment of duration of nova api call is observed. It's involved to multiple API calls, e.g. os-query-sets, /v2.1/servers/detail, etc. And it seems to be accumulated, meaning whenever nova-api is restarted, the duration seems to be fairly fast, giving response within like 80, 90 ms. As it keeps running for like up to 10 days, the duration increases to over 500 ms. I noticed that Caracal is using UnifiedLimitsDriver instead of DbQuotaDriver. I tried to change nova.conf to use DbQuotaDriver but it seems not working well with reducing the duration. I understand that calling to Keystone and Placement (and likely other external APIs) could result to longer duration, but pretty confused why it shows up as accumulated. Wondering if anyone else in Openstack community noticed the similar issue, thanks!

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[cinder] IBM SVf driver callhome
by Vivek Pandey 10 Sep '25

10 Sep '25

Hi Joe/ Brian, Since we didn’t get a chance to discuss the patch [IBM SVf driver] Adding support for callhome plugin, we can continue the conversation here. Patch : https://review.opendev.org/c/openstack/cinder/+/951829. We need callhome enabled as default for which we have introduced a parameter “callhome” in cinder.conf. This feature is to fecth the os_version, cinder-manage version and ispbhaenabled. Note: We are not fetching any customer’s sensitive data. Please let me know if you’ve had a chance to review NetApp’s ActiveIQ implementation. Netapp’s ActiveIQ code ref : https://github.com/openstack/cinder/blob/master/cinder/volume/drivers/netap… As we have discussed during the 9th July cinder call, Anoop from NetApp confirmed that they are enabling it by default and EMS details are being captured from the logs. Based on that, do you think we can align or extend our current IBM callhome implementation (from the patch above) to follow a similar approach? Thanks, Vivek

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[oslo] status of eventlet removal for oslo.service?
by Chris Friesen 04 Sep '25

04 Sep '25

Hi everyone, Looking at the "epoxy" spec for removing Eventlet from oslo.service (https://specs.openstack.org/openstack/oslo-specs/specs/epoxy/remove-eventle…) the very top line is a link to search blueprints.launchpad.net. Following that link it seems like there is no blueprint for removing eventlet from oslo.service, so does the spec itself (with the proposed milestones) represent the current plan? Separately, is there somewhere that shows the progress on the threading backend for oslo.service? I see it exists, are there any limitations on the current implementation? Thanks, Chris

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[keystone][ops] Upgrade to 2025.1 and "corner cases"
by Dmitriy Rabotyagov 02 Sep '25

02 Sep '25

Hey folks, I wanted to raise awareness of operators regarding Keystone upgrade to Epoxy (2025.1), as found that existing release notes are slightly more vague about corner case definition. During analysis, it appeared that a lot of users (and under "a lot" I mean 4 figures number) in my really old deployments (which were deployed during Newton), still in use passwords hashed with sha512_crypt which has been dropped in 2025.1 [1]. As this was referenced as a "corner case" in upgrade docs, it may not bring enough attention to this matter reading notes, while sha512_crypt removal is mentioned in "Other" section which I personally missed when analyzing upgrade requirements. So I would highly recommend to ensure that all your users are using supported hashing algorithms before the upgrade to Epoxy, and inform them to reset their passwords if they don't. You can list users who are using unsupported hashing algorithm using following MySQL query: SELECT distinct l_u.user_id FROM keystone.local_user AS l_u JOIN keystone.password AS hash ON l_u.id = hash.local_user_id WHERE (hash.password_hash LIKE '$6$%' OR hash.password_hash LIKE '$5$%') AND hash.expires_at i s null; Hope this helps somebody to save some time in the future. [1] https://opendev.org/openstack/keystone/commit/4a4137d5f77ced3f4f011846fb9c2…

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[Nova&Neutron] pagination returns an http, not https href link
by Chang Xue 02 Sep '25

02 Sep '25

Hello, we just migrated using new openstack CLI tools, and when using pagination for both Nova and Neutron, we noticed that they are returning http href link although they are expecting https, causing failure: ``` openstack port list Failure: Unable to establish connection to http://openstack....example.com:9696/v2.0/ports: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response')). Retrying in 0.5s.1 retries left Unable to establish connection to http://openstack.....example.com:9696/v2.0/ports: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response')) ``` Is this a bug in Nova/Neutron? I tried other services like Heat, Keystone, etc, and they either returning https href links or just take relative path without schema/host. Thanks, Chang

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[neutron][ovn] Logical Port Statistics
by James Denton 02 Sep '25

02 Sep '25

Hello all, Is anyone aware of a method to gather statistics (bytes in/out, packets, etc.) for logical router ports or similar when using ML2/OVN? I understand neutron-metering-agent parity is currently a feature gap, but I’m curious if there’s some OVN-native functionality that can provide those details. The ask is to provide a bytes-in/out counter for tenant routers, specifically on the external interface(s). Thanks, James Get Outlook for Mac <https://aka.ms/GetOutlookForMac>

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[magnum] Proposing Scott Davidson as magnum-capi-helm core reviewer
by Michał Nasiadka 02 Sep '25

02 Sep '25

Hello, I’d like to propose Scott Davidson as a core reviewer for magnum-capi-helm repository. His insightful and timely reviews have been helping to drive fixes and new features - and it would be great to have him as part of the core reviewers team. Best regards, Michal Nasiadka

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