创建快照
：virsh snapshot-create-as 【主机名】 【快照名】
virsh snapshot-create-as gongdear-kubernetes-master k8smaster-k8scertdone
查看主机的快照
：virsh snapshot-list 【主机名】
virsh snapshot-list gongdear-kubernetes-master
删除主机的快照
：virsh snapshot-delete 【主机名】 【快照名】
virsh snapshot-delete gongdear-kubernetes-master k8smaster-k8scertdone
恢复快照
virsh snapshot-revert 【主机名】 【快照名】
virsh snapshot-delete gongdear-kubernetes-master k8smaster-k8scertdone
宝剑锋从磨砺出,梅花香自苦寒来.