Hello team, I have noticed this for the kolla operation documentation: https://docs.openstack.org/kolla-ansible/zed/user/operating-kolla.html This procedure is for upgrading from series to series, not for doing updates within a series. Inside a series, it is usually sufficient to just update the kolla-ansible package, rebuild (if needed) and pull the images, and run kolla-ansible deploy again. Please follow release notes to check if there are any issues to be aware of. We have two different kolla images and the OpenStack version are all Zed, while one container base image si Rocky 9.2 and another is CentOS 9. Based on kolla documentation, we should use kolla-ansible deploy if we want to switch different kolla images. We also tried to run kolla-ansible upgrade and all VMs have been stopped, just wondering what's the difference when running these two commands and why the upgrade shutdown all the VMs? Thanks