[horizon][python-openstackclient] Hypervisor listed in dashboard but not in CLI

Hello, I am having a strange "error" with an hypervisor. It works and it is shown in Horizon under /Admin/System/System Information/Compute Services/, but it is not listed through the CLI with /openstack hypervisor list/ Any suggestion on how to prevent this? Thanks in advance -- Francesco Di Nucci System Administrator Compute & Networking Service, INFN Naples Email:francesco.dinucci@na.infn.it