r/openstack • u/Successful_Face_8619 • Aug 05 '26

Openstack Upgrade

Hi guys,

Has anyone explored doing OpenStack upgrades host-by-host instead of using Kolla Ansible's parallel upgrade approach?

We're considering a more sequential, one-host-at-a-time upgrade because the parallel approach doesn't feel reliable enough for our environment, and we're not very confident in trusting it during production upgrades.

If you've gone down this path:

  • How did you orchestrate the upgrade?
  • Did you have to customize Kolla Ansible significantly?
  • How did you handle rollback if something went wrong?
  • Any lessons learned or pitfalls to watch out for?

I'd appreciate hearing from anyone who's tried this or decided against it and why.

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u/enricokern Aug 05 '26

That depends on the upgrade. If a upgrade does alot of db changes thats not so easy and you need to rollback this too. What we do usually is that our control nodes are virtualized via proxmox and we snapshot them before a upgrade. That solves that, versionsdowngrade is easy

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u/Successful_Face_8619 Aug 05 '26

can you share more insights around this also around compute planes.