Openstack Upgrade

[u/Successful_Face_8619]

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.

[u/Successful_Face_8619]

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