Upgrade orchestrations are essential! We're both delighted and frustrated by OpenStack's pace of innovation because by the time we get the current release working then new hotness arrives. Last year, it was enough to just install OpenStack, but now we think it's required to have an upgrade plan. As the founders of Crowbar, we are leaders in the cookbook design for OpenStack and have a lot of experience with orchestration for OpenStack deployments. This community discussion about our proposed upgrade pattern reviews our recommendations and orchestration design. If you're interested in cookbooks that are testable and minimize complexity then this session is for you! We want orchestrations between versions that can focus on the specific use-cases around the migration scenarios like incremental, fastest-possible, change of operating system, or VM migration. If you agree that migrations between versions are also very important then look no farther!