Openstack computing node host maintenance method and device and cloud management platform

The invention discloses an openstack computing node host maintenance method and device and a cloud management platform, and the method comprises the steps: determining a to-be-maintained host in an openstack cluster; and migrating the virtual machine to other hosts according to the state of the virtual machine on the host to be maintained. In the embodiment of the invention, migration is carried out according to different states of the virtual machine on the host, so that the host in the openstack cluster is managed more flexibly, and the normal service of the virtual machine on the host is not influenced at the same time. 一种openstack计算节点主机维护的方法、装置和云管理平台，其中，所述方法包括：确定openstack集群中待维护的主机；根据所述待维护的主机上虚拟机的状态将所述虚拟机迁移至其它主机。本申请实施例中，根据主机上的虚拟机的不同状态进行迁移，使得管理openstack集群中的主机变的更加灵活，同时又不影响该主机上虚拟机的正常业务。