Hello all,

I wanted to post a short summary to this list of the vPTG[1] the Magnum team held on April 8th and 9th 2025.

These are the topics and a summary of my notes from the discussions. If I missed key details please add these to the etherpad and/or reply here. Thank you all for attending. Please get in touch if the timing of the vPTG did not work for you, as we could propose multiple timezone slots in future.

• Heat driver deprecation.
• This driver is marked deprecated in Dalmation 2025.1, being replaced by either of the Cluster API drivers, and we discussed when and how we will remove it from Magnum codebase.
• We are now looking at removing the Heat driver in this (Flamingo 2025.2) cycle, as waiting longer may imply waiting until 2026.2 due to SLURP release expectations. We would like to hear any feedback on this plan from users of Magnum - either in the mailing list or join one of our IRC meetings[2].
  
• One option is to move the driver out of tree into its own codebase (perhaps in `x/`), to allow deployers to keep their existing clusters functional and addressable by Magnum while transitioning to a Cluster API driver. This initiative needs effort and a champion to drive it.
• Helm charts (magnum-capi-helm driver)
  
• While the driver code is now in opendev the Helm charts live in azimuth-cloud's github. These are a major component of the driver and we discussed the reasoning behind keeping them in github and stability of the Magnum-capi-helm driver.
• The current proposal is to snapshot the upstream repo at regular intervals into the opendev repo. This avoids maintenance of a complete fork, but keeps the Magnum-capi-helm driver with a stable internal reference of the helm charts.
• CI for the Magnum project was discussed
• One big implication of the Heat driver being removed is what we test against.
• Including the CAPI drivers (initially non-voting) would give stability, provided external changes wouldn't break the CI.
• Normalised labels proposal
• Dale has a proposal for Normalised labels[3], aiming for Mutable labels. The video format discussion of the vPTG was very helpful to give context and move the idea forward to cover API backwards compatibility requirements and a better way to implement support labels for different drivers.
• The proposal as it stands should be re-worked to look at covering a similar extension pattern that Nova has with drivers, and possibly look to replace labels.
• TC initiatives
• We discussed the upcoming Eventlet removal and as we are a small team we will wait for guidance and examples to follow before implementing, but we remain aware of this initiative.

Finally, I wanted to announce to the list that at last weeks Magnum IRC meeting we proposed and agreed on a new time slot. This is on alternate (every second) Tuesday at 8am UTC starting on the 27th May[2]. See the meeting notes for a full transcript and discussion[4].

Links and references:

[1] Magnum vPTG topics and notes can be found on https://etherpad.opendev.org/p/apr2025-ptg-magnum

[2] Magnum weekly meeting times and agenda, https://etherpad.openstack.org/p/magnum-weekly-meeting

[3] Normalisation of labels proposal, https://review.opendev.org/c/openstack/magnum-specs/+/943358

[4] Magnum meeting 2025-05-14, https://meetings.opendev.org/meetings/magnum/2025/magnum.2025-05-14-09.00.log.html

Thank you for reading! (or skim reading!)

Dale Smith

Magnum PTL for Epoxy cycle.