Search results for "#eventlet-removal" - openstack-discuss

Re: #eventlet-removal - Progress & Updates - Flamingo milestone 1

by Dmitry Tantsur

Hi! Thank you for the update, here is the etherpad I created for Ironic: https://etherpad.opendev.org/p/ironic-eventlet-removal Dmitry On 5/20/25 6:44 PM, Herve Beraud wrote: > TL;DR: We just passed the milestone 1 of Flamingo and at this point big > fishes like Neutron, Nova, Glance, and Mistral demonstrated awesome > progress in their migration. Oslo.service's new backend is now usable in > real life use cases. Eventlet still suffers from a new version of > Python. If you have not yet started your migration yet, then, please > consider starting ASAP before the aircraft crash. > > ## OpenStack Updates > > Neutron's L3 agent is well on its way to running its WSGI features > without using Eventlet and activating the new oslo.service threading > backend at runtime. Allowing to decouple a bit more the needs of > Eventlet at runtime. > > Nova scheduler is now able to start in threading mode without requiring > any usage of Eventlet at runtime. This was possible by also shifting > nova-scheduler to the threading backend of oslo.service. More details > are available here https://gibizer.github.io/categories/eventlet/ > <https://gibizer.github.io/categories/eventlet/> > > Activating the new threading backend of oslo.service required devstack > adaptation to allow having jobs running this execution mode. https:// > review.opendev.org/c/openstack/devstack/+/948436 <https:// > review.opendev.org/c/openstack/devstack/+/948436>. Everybody will be > able to benefit from these adaptations. > > Glance continues its adaptation journey by migrating its functional jobs > to reduce its needs of Eventlet and to allow it to run jobs in threading > mode. > > oslo.service's new backend is on the way to be landed soon, and is > waiting for additional reviews. https://review.opendev.org/c/openstack/ > oslo.service/+/945720 <https://review.opendev.org/c/openstack/ > oslo.service/+/945720> > > ## Eventlet Updates > > Our CI was failing for almost 2 months, we were able to unlock this > failing CI and hence we were able to merge several blocked reviews. > > Last week Eventlet 0.40.0 was released. This new version provides fixes > around OpenSSL 3.5+. > The support of Python 3.8 and of PyPy were removed. > > The Python 3.13 issues are still not solved and require further work. > > ## Call to Action > > Flamingo is a crucial series in the realization of global migration of > OpenStack. We need your involvement to accelerate the progress of this > initiative! > > If your project is affected by Eventlet, now is the time to start your > migration. Teams are invited to read the migration guide available at > https://removal.eventlet.org/ <https://removal.eventlet.org/> and are > encouraged to join the #openstack-eventlet-removal IRC channel to get help. > > You'll benefit quickly from the advantages of running your deliverables > without using Eventlet. > > ## Final Thoughts > > Postponing the beginning of the migration will put additional pressure > related to growing runtime failures of Eventlet. We want to prevent this > from happening to you. > > We are now going straight to milestone 2 meaning that we will soon be in > the middle of Flamingo. > > The migration path is now well cleared by all the previous actions and > changes applied into OpenStack. Do not be afraid by the migration and > take advantage of the collected experience. > > Your journey start here https://removal.eventlet.org/ <https:// > removal.eventlet.org/> > > Thanks for reading. > > -- > Hervé Beraud > Principal Software Engineer at Red Hat > irc: hberaud > https://github.com/4383/ <https://github.com/4383/> >

2 months, 3 weeks

Re: #eventlet-removal - Progress & Update

by Dmitry Tantsur

Hi, On 10/9/24 9:36 AM, Herve Beraud wrote: > Hey there, > > @Arnaud: Mistral is already in our list of identified deliverables: > https://wiki.openstack.org/wiki/Eventlet- > removal#Map_of_the_Impacted_Deliverables <https://wiki.openstack.org/ > wiki/Eventlet-removal#Map_of_the_Impacted_Deliverables>. But thanks for > the heads up. By the way, was this list compiled based on a text search? It lists a few *-specs repositories which are unlikely to be impacted. The mentions of puppet are also suspicious. From the ironic side, I suspect we won't be migrating ironic-inspector and its client as they are deprecated. I haven't discussed it with the team though. Dmitry > > @engineer2024: I'll let the Nova team answer your question. > > Le mar. 8 oct. 2024 à 22:56, Arnaud Morin <arnaud.morin(a)gmail.com > <mailto:arnaud.morin@gmail.com>> a écrit : > > Hey Herve, > > Please add mistral to your list. > I havn't dig into code for this yet, but it's in requirements and it > seems to be used by some of the services. > > Regards, > Arnaud. > > On 04.10.24 - 17:08, Herve Beraud wrote: > > We’re excited to share the latest updates on our ongoing efforts > to phase > > out Eventlet across our various OpenStack projects. Below you’ll > find a > > summary of our progress, key milestones, and important dates to > keep in > > mind as we move forward with this critical initiative. > > > > ## Current Status > > > > We’ve completed the initial analysis phase across more than 120 > OpenStack > > projects. This includes identifying the various patterns where > Eventlet is > > currently in use and evaluating where it can be safely removed or > disabled. > > Here are some highlights: > > > > - Completed Analysis: Projects where Eventlet is used include > (but are not > > limited to): Aodh, Barbican, Nova, Neutron, Tacker, Taskflow, > Trove, Venus, > > Watcher, and Zun. > > > > - Eventlet Optional: Several projects have been identified where > Eventlet > > seems to be optional and can be disabled with minimal impact. For > these > > projects, we will move forward the discussion with teams to try > > deactivating Eventlet in upcoming updates. Once done, projects of > this kind > > would be able to start their migration with more serenity. > > > > - Eventlet Required: Some projects still rely heavily on Eventlet > for core > > functionality. For these, we are going to develop specific > migration plans. > > > > ## Migration Plans in Progress > > > > - oslo.db: Preparing its Asyncio based engine facade; > > - oslo.service: Refactoring plans being discussed to minimize > disruption > > during the migration; > > - glance: Refactoring code to use native thread model rather than > Eventlet > > > > More details can be found here: > > https://review.opendev.org/q/topic:%22eventlet-removal%22 > <https://review.opendev.org/q/topic:%22eventlet-removal%22> > > > > ## Latest Updates > > > > - Community Goal Transition: The ongoing community goal for removing > > Eventlet is now in the process of becoming an official "selected" > goal, > > https://review.opendev.org/c/openstack/governance/+/931254 > <https://review.opendev.org/c/openstack/governance/+/931254>. > > > > - Pattern Identification Completed: We’ve identified key patterns > related > > to Eventlet usage, including its common integration with > monkey_patch(), > > eventlet.Timeout, eventlet.GreenPool, and eventlet.wsgi.server(). > Visit the > > official wiki to get more details > > https://wiki.openstack.org/wiki/Eventlet- > removal#Identifying_Common_Pattern <https://wiki.openstack.org/wiki/ > Eventlet-removal#Identifying_Common_Pattern> > > > > ## Important Dates > > > > - October 21st: cross PTG session. > > - October 23rd: cross PTG session (Q&A session and Open > Discussion session) > > > > ## Call to Action > > > > We need your involvement to accelerate the progress of this > initiative! If > > your project is affected by Eventlet, now is the time to start > planning > > your migration. Teams are encouraged to take immediate steps in > assessing > > how to deactivate Eventlet or to transition to alternative solutions. > > > > We defined key roles and responsibilities. Those will help us to > lower the > > cost of the migration for our community. Teams are invited to > assign them > > now. Being ready as soon as possible will allow you to better take > > advantage of the coming PTG sessions. > > > > Please find more details about these roles and their short terms > tasks: > > https://wiki.openstack.org/wiki/Eventlet- > removal#Roles_and_Responsibilities <https://wiki.openstack.org/wiki/ > Eventlet-removal#Roles_and_Responsibilities> > > > > ## Final Thoughts > > > > This is a significant step forward for improving the stability, > > scalability, and maintainability of our projects. With your continued > > support, we’re confident that this migration will bring substantial > > benefits to the OpenStack community. > > > > If there are any questions or if you need assistance with your > project’s > > transition away from Eventlet, please join the discussion on the > > #eventlet-removal channels (OpenStack irc, RedHat slack, mailing > list). > > > > Thank you for your dedication and hard work! > > > > -- > > Hervé Beraud > > Senior Software Engineer at Red Hat > > irc: hberaud > > https://github.com/4383/ <https://github.com/4383/> > > > > -- > Hervé Beraud > Senior Software Engineer at Red Hat > irc: hberaud > https://github.com/4383/ <https://github.com/4383/> >

9 months, 4 weeks

#eventlet-removal - Progress & Updates - Flamingo milestone 1

by Herve Beraud

TL;DR: We just passed the milestone 1 of Flamingo and at this point big fishes like Neutron, Nova, Glance, and Mistral demonstrated awesome progress in their migration. Oslo.service's new backend is now usable in real life use cases. Eventlet still suffers from a new version of Python. If you have not yet started your migration yet, then, please consider starting ASAP before the aircraft crash. ## OpenStack Updates Neutron's L3 agent is well on its way to running its WSGI features without using Eventlet and activating the new oslo.service threading backend at runtime. Allowing to decouple a bit more the needs of Eventlet at runtime. Nova scheduler is now able to start in threading mode without requiring any usage of Eventlet at runtime. This was possible by also shifting nova-scheduler to the threading backend of oslo.service. More details are available here https://gibizer.github.io/categories/eventlet/ Activating the new threading backend of oslo.service required devstack adaptation to allow having jobs running this execution mode. https://review.opendev.org/c/openstack/devstack/+/948436. Everybody will be able to benefit from these adaptations. Glance continues its adaptation journey by migrating its functional jobs to reduce its needs of Eventlet and to allow it to run jobs in threading mode. oslo.service's new backend is on the way to be landed soon, and is waiting for additional reviews. https://review.opendev.org/c/openstack/oslo.service/+/945720 ## Eventlet Updates Our CI was failing for almost 2 months, we were able to unlock this failing CI and hence we were able to merge several blocked reviews. Last week Eventlet 0.40.0 was released. This new version provides fixes around OpenSSL 3.5+. The support of Python 3.8 and of PyPy were removed. The Python 3.13 issues are still not solved and require further work. ## Call to Action Flamingo is a crucial series in the realization of global migration of OpenStack. We need your involvement to accelerate the progress of this initiative! If your project is affected by Eventlet, now is the time to start your migration. Teams are invited to read the migration guide available at https://removal.eventlet.org/ and are encouraged to join the #openstack-eventlet-removal IRC channel to get help. You'll benefit quickly from the advantages of running your deliverables without using Eventlet. ## Final Thoughts Postponing the beginning of the migration will put additional pressure related to growing runtime failures of Eventlet. We want to prevent this from happening to you. We are now going straight to milestone 2 meaning that we will soon be in the middle of Flamingo. The migration path is now well cleared by all the previous actions and changes applied into OpenStack. Do not be afraid by the migration and take advantage of the collected experience. Your journey start here https://removal.eventlet.org/ Thanks for reading. -- Hervé Beraud Principal Software Engineer at Red Hat irc: hberaud https://github.com/4383/

2 months, 3 weeks

Re: #eventle-removal - Progress & Updates Epoxy Milestones 2-3

by Walter Boring

Hello there, I have added a WIP patch for oslo.vmware in gerrit to remove oslo.vmware's reliance on eventlet. Both cinder and nova use oslo.vmware to support vmware as a valid backend. I would not consider oslo.vmware to be experimental as it's been around for ages. The only thing I might need help with is the replacement of eventlet.Timeout usage. Looks like nova still relies on eventlet.timeout as well. Not sure if my WIP is the right way to go, but since oslo.service has an abstraction already in place to replace eventlet, my WIP relies on that abstraction to replace the copied loopingcall classes. Those loopingcall classes that were declared in oslo.vmware have been switched to use the oslo.service abstraction. Walt On Tue, Feb 11, 2025 at 4:59 AM Herve Beraud <hberaud(a)redhat.com> wrote: > Today we wanted to share with you the latest updates on our ongoing > efforts to phase out Eventlet across our various OpenStack projects. Below > you’ll find a summary of our progress, key milestones, and important dates > to keep in mind as we continue to move forward with this critical > initiative. > > ## Current Status > > The lib freeze is next week and we are close from milestone 3. At the time > I wrote these lines 105 eventlet removal patches have been submitted on our > gerrit and 61 patches are now merged. That shows really good progress. > > https://review.opendev.org/q/prefixtopic:%22eventlet-removal%22 > > Eventlet is now in version 0.39.0 and is compatible and ready to be used > with Python 3.13, meaning that we are ready for an upgrade of our runtimes > within the coming series. > > ## Achievements > > Among all the contributions, we can highlight these achievements: > > - 2 deliverables are now completely migrated: python-manilaclient and > mistral-lib; > - Neutron implemented their new socket server in replacement of the > eventlet WSGI features and they started to migrate their OVN agent other > that new server; > - Mistral has made excellent progress and significantly reduced their > usages of Eventelt. From moving from coroutines to threading, or migrating > their messaging executor. We will been soon able to consider mistral as > fully migrated; > - Glance started a wide clean up of Eventlet into their functional tests; > - oslo.service's backend mechanism is now implemented and the Eventlet > isolation as been merged, opening the door of its refactoring based on > threading; > - Almost all Oslo deliverables (apart oslo.vmware) deprecated Eventlet > from their usages; > - Eventlet's support of Python 3.13 has been implemented and released; > - Eventlet stabilization works have been done during the past months and > we now observe less negative feedback and less new bugs. No news, good news; > - The community goal is now selected, officializing the starting of this > initiative. > > ## Latest Updates > > There are side conversations concerning the deprecation/removal of > oslo.rootwrap and oslo.vmware. Those both deliverables rely on Eventlet and > are in some way considered as deprecated or experimental. > > In parallel to that, we think we should also have a discussion about heat > and heat-templates. The activity of these projects seems quite slow and (do > not hesitate to correct me if I'm wrong) they are more or less in a way to > be replaced with more modern ways to orchestrate OpenStack. Should we not > prioritize their deprecation or at least start a wider discussion about > their fate? > > ## Call to Action > > Epoxy is a SLURP series, and as we are close from lib freeze and from > milestone 3, that's the right time to prioritize your deprecations in your > deliverables in view of removing these pieces with non-SLURP series. The > sooner they are deprecated the better. > > ## Important Dates > > Please do not hesitate to join us during our bi-weekly meeting on > #openstack-eventlet-removal. > Bring your own topics and do not hesitate to ask questions. > > All the details are available in the links below: > - https://wiki.openstack.org/wiki/Eventlet-removal#Recurring_Events > - https://etherpad.opendev.org/p/epoxy-eventlet-tracking > > ## Final Thoughts > > This series strongly demonstrated the feasibility to remove our dependency > to Eventlet. There is still a long way to go but the path is now well > cleared. Do not hesitate to take example on the ongoing efforts, and If > there are any questions or if you need assistance with your project’s > transition away from Eventlet, please join the discussion on the > #openstack-eventlet-removal OFTC channels . We will be happy to help you! > > Thank you for your dedication and hard work! > > -- > Hervé Beraud > Senior Software Engineer at Red Hat > irc: hberaud > https://github.com/4383/ > >

5 months, 3 weeks

Re: #eventlet-removal - Progress & Update

by Arnaud Morin

Hey Herve, Please add mistral to your list. I havn't dig into code for this yet, but it's in requirements and it seems to be used by some of the services. Regards, Arnaud. On 04.10.24 - 17:08, Herve Beraud wrote: > We’re excited to share the latest updates on our ongoing efforts to phase > out Eventlet across our various OpenStack projects. Below you’ll find a > summary of our progress, key milestones, and important dates to keep in > mind as we move forward with this critical initiative. > > ## Current Status > > We’ve completed the initial analysis phase across more than 120 OpenStack > projects. This includes identifying the various patterns where Eventlet is > currently in use and evaluating where it can be safely removed or disabled. > Here are some highlights: > > - Completed Analysis: Projects where Eventlet is used include (but are not > limited to): Aodh, Barbican, Nova, Neutron, Tacker, Taskflow, Trove, Venus, > Watcher, and Zun. > > - Eventlet Optional: Several projects have been identified where Eventlet > seems to be optional and can be disabled with minimal impact. For these > projects, we will move forward the discussion with teams to try > deactivating Eventlet in upcoming updates. Once done, projects of this kind > would be able to start their migration with more serenity. > > - Eventlet Required: Some projects still rely heavily on Eventlet for core > functionality. For these, we are going to develop specific migration plans. > > ## Migration Plans in Progress > > - oslo.db: Preparing its Asyncio based engine facade; > - oslo.service: Refactoring plans being discussed to minimize disruption > during the migration; > - glance: Refactoring code to use native thread model rather than Eventlet > > More details can be found here: > https://review.opendev.org/q/topic:%22eventlet-removal%22 > > ## Latest Updates > > - Community Goal Transition: The ongoing community goal for removing > Eventlet is now in the process of becoming an official "selected" goal, > https://review.opendev.org/c/openstack/governance/+/931254. > > - Pattern Identification Completed: We’ve identified key patterns related > to Eventlet usage, including its common integration with monkey_patch(), > eventlet.Timeout, eventlet.GreenPool, and eventlet.wsgi.server(). Visit the > official wiki to get more details > https://wiki.openstack.org/wiki/Eventlet-removal#Identifying_Common_Pattern > > ## Important Dates > > - October 21st: cross PTG session. > - October 23rd: cross PTG session (Q&A session and Open Discussion session) > > ## Call to Action > > We need your involvement to accelerate the progress of this initiative! If > your project is affected by Eventlet, now is the time to start planning > your migration. Teams are encouraged to take immediate steps in assessing > how to deactivate Eventlet or to transition to alternative solutions. > > We defined key roles and responsibilities. Those will help us to lower the > cost of the migration for our community. Teams are invited to assign them > now. Being ready as soon as possible will allow you to better take > advantage of the coming PTG sessions. > > Please find more details about these roles and their short terms tasks: > https://wiki.openstack.org/wiki/Eventlet-removal#Roles_and_Responsibilities > > ## Final Thoughts > > This is a significant step forward for improving the stability, > scalability, and maintainability of our projects. With your continued > support, we’re confident that this migration will bring substantial > benefits to the OpenStack community. > > If there are any questions or if you need assistance with your project’s > transition away from Eventlet, please join the discussion on the > #eventlet-removal channels (OpenStack irc, RedHat slack, mailing list). > > Thank you for your dedication and hard work! > > -- > Hervé Beraud > Senior Software Engineer at Red Hat > irc: hberaud > https://github.com/4383/

10 months

#eventlet-removal Meeting canceled - Feb 18

by Herve Beraud

Hey folks, The coming meeting (Feb 18) is canceled. The next meeting will be on March 04. For more details about meetings: - https://etherpad.opendev.org/p/epoxy-eventlet-tracking - https://wiki.openstack.org/wiki/Eventlet-removal#Recurring_Events Thanks for your attention. -- Hervé Beraud Senior Software Engineer at Red Hat irc: hberaud https://github.com/4383/

6 months

Re: #eventlet-removal - Progress & Update

by engineer2024

That's encouraging news. I hope the new alternative would support a python debugger like pdb. This will help the new users to understand the flow better. So when can we expect initial release atleast beta of eventlet free nova components ? On Fri, 4 Oct 2024, 20:38 Herve Beraud, <hberaud(a)redhat.com> wrote: > We’re excited to share the latest updates on our ongoing efforts to phase > out Eventlet across our various OpenStack projects. Below you’ll find a > summary of our progress, key milestones, and important dates to keep in > mind as we move forward with this critical initiative. > > ## Current Status > > We’ve completed the initial analysis phase across more than 120 OpenStack > projects. This includes identifying the various patterns where Eventlet is > currently in use and evaluating where it can be safely removed or disabled. > Here are some highlights: > > - Completed Analysis: Projects where Eventlet is used include (but are not > limited to): Aodh, Barbican, Nova, Neutron, Tacker, Taskflow, Trove, Venus, > Watcher, and Zun. > > - Eventlet Optional: Several projects have been identified where Eventlet > seems to be optional and can be disabled with minimal impact. For these > projects, we will move forward the discussion with teams to try > deactivating Eventlet in upcoming updates. Once done, projects of this kind > would be able to start their migration with more serenity. > > - Eventlet Required: Some projects still rely heavily on Eventlet for core > functionality. For these, we are going to develop specific migration plans. > > ## Migration Plans in Progress > > - oslo.db: Preparing its Asyncio based engine facade; > - oslo.service: Refactoring plans being discussed to minimize disruption > during the migration; > - glance: Refactoring code to use native thread model rather than Eventlet > > More details can be found here: > https://review.opendev.org/q/topic:%22eventlet-removal%22 > > ## Latest Updates > > - Community Goal Transition: The ongoing community goal for removing > Eventlet is now in the process of becoming an official "selected" goal, > https://review.opendev.org/c/openstack/governance/+/931254. > > - Pattern Identification Completed: We’ve identified key patterns related > to Eventlet usage, including its common integration with monkey_patch(), > eventlet.Timeout, eventlet.GreenPool, and eventlet.wsgi.server(). Visit the > official wiki to get more details > https://wiki.openstack.org/wiki/Eventlet-removal#Identifying_Common_Pattern > > ## Important Dates > > - October 21st: cross PTG session. > - October 23rd: cross PTG session (Q&A session and Open Discussion session) > > ## Call to Action > > We need your involvement to accelerate the progress of this initiative! If > your project is affected by Eventlet, now is the time to start planning > your migration. Teams are encouraged to take immediate steps in assessing > how to deactivate Eventlet or to transition to alternative solutions. > > We defined key roles and responsibilities. Those will help us to lower the > cost of the migration for our community. Teams are invited to assign them > now. Being ready as soon as possible will allow you to better take > advantage of the coming PTG sessions. > > Please find more details about these roles and their short terms tasks: > https://wiki.openstack.org/wiki/Eventlet-removal#Roles_and_Responsibilities > > ## Final Thoughts > > This is a significant step forward for improving the stability, > scalability, and maintainability of our projects. With your continued > support, we’re confident that this migration will bring substantial > benefits to the OpenStack community. > > If there are any questions or if you need assistance with your project’s > transition away from Eventlet, please join the discussion on the > #eventlet-removal channels (OpenStack irc, RedHat slack, mailing list). > > Thank you for your dedication and hard work! > > -- > Hervé Beraud > Senior Software Engineer at Red Hat > irc: hberaud > https://github.com/4383/ > >

10 months, 1 week

Re: #eventlet-removal - Progress & Updates - Flamingo milestone 1

by Herve Beraud

Le mar. 20 mai 2025 à 18:47, Dmitry Tantsur <dtantsur(a)protonmail.com> a écrit : > Hi! > > Thank you for the update, here is the etherpad I created for Ironic: > https://etherpad.opendev.org/p/ironic-eventlet-removal > > Thank you Dimitry, that looks pretty amazing, kudos! Let me add it to our collection of efforts. > Dmitry > > On 5/20/25 6:44 PM, Herve Beraud wrote: > > TL;DR: We just passed the milestone 1 of Flamingo and at this point big > > fishes like Neutron, Nova, Glance, and Mistral demonstrated awesome > > progress in their migration. Oslo.service's new backend is now usable in > > real life use cases. Eventlet still suffers from a new version of > > Python. If you have not yet started your migration yet, then, please > > consider starting ASAP before the aircraft crash. > > > > ## OpenStack Updates > > > > Neutron's L3 agent is well on its way to running its WSGI features > > without using Eventlet and activating the new oslo.service threading > > backend at runtime. Allowing to decouple a bit more the needs of > > Eventlet at runtime. > > > > Nova scheduler is now able to start in threading mode without requiring > > any usage of Eventlet at runtime. This was possible by also shifting > > nova-scheduler to the threading backend of oslo.service. More details > > are available here https://gibizer.github.io/categories/eventlet/ > > <https://gibizer.github.io/categories/eventlet/> > > > > Activating the new threading backend of oslo.service required devstack > > adaptation to allow having jobs running this execution mode. https:// > > review.opendev.org/c/openstack/devstack/+/948436 <https:// > > review.opendev.org/c/openstack/devstack/+/948436>. Everybody will be > > able to benefit from these adaptations. > > > > Glance continues its adaptation journey by migrating its functional jobs > > to reduce its needs of Eventlet and to allow it to run jobs in threading > > mode. > > > > oslo.service's new backend is on the way to be landed soon, and is > > waiting for additional reviews. https://review.opendev.org/c/openstack/ > > oslo.service/+/945720 <https://review.opendev.org/c/openstack/ > > oslo.service/+/945720> > > > > ## Eventlet Updates > > > > Our CI was failing for almost 2 months, we were able to unlock this > > failing CI and hence we were able to merge several blocked reviews. > > > > Last week Eventlet 0.40.0 was released. This new version provides fixes > > around OpenSSL 3.5+. > > The support of Python 3.8 and of PyPy were removed. > > > > The Python 3.13 issues are still not solved and require further work. > > > > ## Call to Action > > > > Flamingo is a crucial series in the realization of global migration of > > OpenStack. We need your involvement to accelerate the progress of this > > initiative! > > > > If your project is affected by Eventlet, now is the time to start your > > migration. Teams are invited to read the migration guide available at > > https://removal.eventlet.org/ <https://removal.eventlet.org/> and are > > encouraged to join the #openstack-eventlet-removal IRC channel to get > help. > > > > You'll benefit quickly from the advantages of running your deliverables > > without using Eventlet. > > > > ## Final Thoughts > > > > Postponing the beginning of the migration will put additional pressure > > related to growing runtime failures of Eventlet. We want to prevent this > > from happening to you. > > > > We are now going straight to milestone 2 meaning that we will soon be in > > the middle of Flamingo. > > > > The migration path is now well cleared by all the previous actions and > > changes applied into OpenStack. Do not be afraid by the migration and > > take advantage of the collected experience. > > > > Your journey start here https://removal.eventlet.org/ <https:// > > removal.eventlet.org/> > > > > Thanks for reading. > > > > -- > > Hervé Beraud > > Principal Software Engineer at Red Hat > > irc: hberaud > > https://github.com/4383/ <https://github.com/4383/> > > > > > -- Hervé Beraud Principal Software Engineer at Red Hat irc: hberaud https://github.com/4383/

2 months, 3 weeks

Re: [eventlet-removal]When to drop eventlet support

by Sean Mooney

On 13/06/2025 16:55, Ghanshyam Maan wrote: > ---- On Fri, 13 Jun 2025 08:33:25 -0700 Jay Faulkner <jay(a)gr-oss.io> wrote --- > > > > On 6/13/25 5:08 AM, Balazs Gibizer wrote: > > > Hi Stackers! > > > > > > I would like to sync about the planned timeline of dropping eventlet > > > support from OpenStack / Oslo. > > > > > > Nova definitely needs at least the full 2026.1 cycle to have a chance > > > to transform the nova-compute service. But this plan already feels > > > stretched based on the progress in the current cycle. So being > > > conservative means we need the 2026.2 cycle as a buffer. > > > > > > Nova would like to keep a release where we support both eventlet and > > > threading in parallel. So that operators can do the switching from > > > eventlet to threading outside of the upgrade procedure. (This was an > > > explicit request from them during the PTG). So 2026.2 could be that > > > version where nova fully supports both concurrency mode, while > > > eventlet can be marked deprecated. Then the 2027.1 release could be > > > the first release dropping eventlet. > > > > > > However we need to align with the SLURP upgrade as well. 2026.1 is a > > > SLURP. But in that release Nova might not be ready to have all > > > services running in threading mode. So the 2026.1 - 2027.1 SLURP > > > upgrade would force the operators to change the concurrency mode > > > during the upgrade itself. yes i think that how it should work if an only if a givne service is capable of working without eventlet in the prior slurp. if we dont get to the point of being able to run in threaded mode for a given service in 2026.1 then the deprecate of eventlet for tha service will have to be released in the next slurp (2027.1) before the removal of support can be done in the next non slupr 2027.2 > > > > > > I see two ways forward: > > > * A) We say that operators who want to do the concurrency mode change > > > outside of an upgrade could not skip the 2026.2 release, i.e. they > > > cannot do SLURP directly from 2026.1. to 2027.1. > > This has a big impact on upgrades and breaks our SLURP model. > > > > * B) We keep supporting the eventlet mode in the 2027.1 release as > > > well and only dropping support in 2028.1. no we can support it in 2027.1 with all serives defaulting ot not using it if its congurable and deprecate it then remove in 2027.2 we do not need to extned to 2028.1 > > I am in favour of this option. > > I was reading the goal doc about the timeline and found something in > 'Completion Criteria' section[1] which says: > - (2027.1) Get usage of Eventlet in oslo deliverables removed; so in my mind 2027.1 was either gonig to be the first release without eventlet support or the last release to supprot eventlet mode.(if supported in 2027.1 eventlet mode would not be the default mode and would be deprecated for removal in 2027.2. my expectation is the first release of nova to support running in thread mode would be 2026.1 but im not convinced we will be confident enough to switch threaded mode on by default for all nova services in 2026.1. basically i think it may be funcitonal but have some bugs or performace issues that will be refined in 2026.2 wehre we will look to change the default. then in 2027.1 we will either start removing the option to run in eventlet mode or deprecate that and remove it in 2027.2 my logic is this if we can run in threaded mode in 2026.1 in all service we will likely deprecate eventlet mode in 2026.1, but im not sure we will change the default and deprecate in the same release. nova may decied to take a per bindary (api vs schduler) approch to changing the default and doign the eventlet removal too but we have not discussed that in detail. for example if the nova-schduler is able to run in thread mode this cycle. we could deprecate runing it in eventlet mdoe in 2026.1 and make threaded mode the default however we will still need eventlet for nova-compute. so we have a choice to make, only deprecate using eventlet in nova once all nova service are ready or do it per sevice as each part is ready. > - "(2027.2) Get Eventlet retired from OpenStack;" > Again, 2027.2 (non-SLURP) is mentioned as eventlet retirement, I do not know > if any technical reason to do it in non-SLURP or it can be moved to SLURP release. > Maybe hberaud knows. i dont see doing this in a non slurp as a problem under our upgrade policy. once we have supprot for runnign without it in a preor slurp even if its not the defautl we are free to deprecate eventlet supprot in that slurp and remove it in a non slurp. to me this jsut reads as we deprecate in 2027.1 annoching it will be removed in a future release adn then we do the removal in the non slurp i think doing the actual removal in a non slurp is better then doing it in a slurp. i.e. the deprecations happen in the slurps, the changes of defaults and remvoal of code happens in the non slurps. operators who want to move fast or use newer python release can adopt the new defaults earlier in the non sluprts those that want to move slow get longer for the new mode to bake by skiping the release and getting the concuracy model change on upgrade. > > Anyway, thanks gibi for bringing this. There are many projects that have not started the > work yet (Nova might have more work compared to others), but I think we should discuss/re-discuss > the timelines considering all projects/challenges. Accordingly, update the goal doc for the exact timelines > and what the impact will be for projects that do not finish work as per the timelines (for example upgrade > issue, workaround etc). > > [1] https://governance.openstack.org/tc/goals/selected/remove-eventlet.html#com… > > -gmaan > > > > > Keeping eventlet running for that long is not something that is a worthy > > investment of time. The oslo libraries are showing a deprecation of > > 2026.2, I've been using that date as the target for all Ironic work as > > well. > > > > Beyond the oslo team (who I don't speak for), there are folks -- like > > Itamar on behalf of GR-OSS -- who are doing work behind the scenes to > > keep eventlet running - barely. I do not expect the GR-OSS investment in > > this work to extend much past the midpoint of 2026. > > > > > > My $.02, > > > > Jay Faulkner > > Open Source Developer > > G-Research Open Source Software > > > > >

2 months

#eventlet-removal - OFTC IRC meeting time slot poll - Express your choice!

by Herve Beraud

Hey Stackers, We propose to schedule a one hour OFTC IRC meeting (#opentack-eventlet-removal) each first and third week of each month. Let's find together the right UTC time slot for our one hour OFTC IRC meeting. Once the vote is done, meetings will be scheduled each first and third <selected time slot in the poll> of each month. Please, vote here: https://framadate.org/rUghO3j6ZkRhKD7m Votes will be considered as closed by Nov. 8th First meeting will be forced to 4pm UTC on Tuesday Nov 5th and then moved to the selected time slot for all the following meetings. See the proposed time slots in the poll link above. Join us on the #opentack-eventlet-removal OFTC IRC channel. Thanks in advance for your votes -- Hervé Beraud Senior Software Engineer at Red Hat irc: hberaud https://github.com/4383/

9 months, 2 weeks

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