I use openstack-ansible to deploy the Openstack (version: 17.1.12). after deployment completed, the compute nodes has the nova-compute service running but the nova service-list command dosen't show the nova-compute. and the /var/log/nova/nova-compute.log dosen't have any error.

the deployment environment is below. Ubuntu 16.04.6 * 4 (one for ansible, one for controller+storage node, other two for compute nodes)