Hello everyone, I have a production OpenStack cluster for ESM students running Epoxy, deployed with Kolla-Ansible, and everything is working perfectly. I’m very satisfied with this setup. To prepare for upgrades, I set up a new test cluster in parallel using Kolla-Ansible, but this time with Flamingo. Everything seemed fine until I tried to create a network and its subnet in Horizon. The network is created, but no availability zone is associated with it. As a result, I cannot launch instances on this network. Could this be a change in the new OpenStack installation process that I missed? Or is this a bug? This is the first time I’ve encountered this issue. Is there a parameter that needs to be added in the Horizon override file (_9999-custom-settings.py) to handle this? Thanks in advance for any guidance. Franck VEDEL