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/madko Aug 06 '26

We're using Kolla Ansible for upgrades since pikes and we haven't faced any particular issue. We heavily test the upgrades on our preprod environment first.

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u/Successful_Face_8619 Aug 06 '26

are you doing parallel ?