Dear community, i am new to openstack. I have deployed devstack (on a virtual machine), and I can successfully deploy instances at the host where the controller is installed. I followed the instructions from https://docs.openstack.org/nova/queens/install/compute-install-ubuntu.html to add a new compute host, in order to be able to deploy VMs at the PC. Here is the output: openstack compute service list --service nova-compute +----+--------------+-----------+------+---------+-------+----------------------------+ | ID | Binary | Host | Zone | Status | State | Updated At | +----+--------------+-----------+------+---------+-------+----------------------------+ | 3 | nova-compute | openstack | nova | enabled | up | 2020-11-11T07:10:41.000000 | | 5 | nova-compute | computenode | nova | enabled | up | 2020-11-11T07:10:42.000000 | +----+--------------+-----------+------+---------+-------+----------------------------+ "computenode" is the new device that i added. When i try to deploy an instance from cli: openstack server create --flavor m1.tiny --image cirros034 --nic net-id=internal --security-group c8b06902-6664-4776-a8e9-0735ae251d34 --availability-zone nova:computenode mym--debug the reply i see from horizon is since there is an error in deploying the instance No valid host was found. No such host - host: computenode node: None any directions? all the best, Pavlos