openstack-nova-compute.service 计算节点服务无法启动

部署OpenStack Mitaka版时，计算节点openstack-nova-compute.service 服务一直夯着无法启动，libvirtd 服务启动正常：

[root@compute1 ~]$ systemctl status openstack-nova-compute.service 
● openstack-nova-compute.service - OpenStack Nova Compute Server
   Loaded: loaded (/usr/lib/systemd/system/openstack-nova-compute.service; enabled; vendor preset: disabled)
   Active: activating (start) since Fri 2019-06-21 21:43:51 CST; 22min ago
 Main PID: 3688 (nova-compute)
    Tasks: 1
   CGroup: /system.slice/openstack-nova-compute.service
           └─3688 /usr/bin/python2 /usr/bin/nova-compute

nova-compute日志如下：

原因是计算节点不知道谁是控制节点，所以需要把控制节点的IP写入到hosts文件中

[root@compute1 ~]$ vim /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
10.0.0.11   controller
10.0.0.31   compute1

启动成功！