1、在控制节点上操作查看计算节点
# openstack compute service list

2、将compute02上的计算服务设置为down，然后disabled

systemctl stop openstack-nova-compute
nova service-disable compute02 nova-compute
nova service-list

3、在数据库里清理（nova库）
mysql -u root -p123

查看节点信息
MariaDB [(none)]> use nova;
MariaDB [nova]> select hypervisor_hostname from compute_nodes;

删除数据库中的compute02节点信息
MariaDB [nova]> delete from nova.services where host="compute02";

查看节点信息
select hypervisor_hostname from compute_nodes;