错误描述：
上图的错误信息为
Error: 创建实例 “cirros” 失败: 请稍后再试 [错误: Build of instance 751267aa-e9e2-41c0-945b-9bbb94096849 aborted: Failed to allocate the network(s), not rescheduling.].
计算节点中nova-compute.log的信息
ERROR nova.compute.manager [-] [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc] Instance failed to spawnTRACE nova.compute.manager [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc] File “/usr/lib/python2.7/dist-packages/nova/compute/manager.py”, line 2252, in _build_resourcesTRACE nova.compute.manager [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc] File “/usr/lib/python2.7/dist-packages/nova/compute/manager.py”, line 2122, in _build_and_run_instanceTRACE nova.compute.manager [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc] VirtualInterfaceCreateException: Virtual Interface creation failedTRACE nova.compute.manager [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc]AUDIT nova.compute.manager [req-92856669-8c22-4f71-91ab-f38c0474fc2b None] [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc] Terminating instanceWARNING nova.virt.libvirt.driver [-] [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc] During wait destroy, instance disappeared.INFO nova.virt.libvirt.driver [-] [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc] Deletion of /var/lib/nova/instances/7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc_del completeINFO nova.scheduler.client.report [-] Compute_service record updated for (‘server-01’, ‘server-01’)ERROR nova.compute.manager [-] [instance: 7d025f29-0c6b-4b8c-81c5-8f9c71bd35dc] Failed to allocate network(s)解决方式
在计算节点的/etc/nova/nova.conf中添加下面两句
#Fail instance boot if vif plugging fails vif_plugging_is_fatal = False vif_plugging_timeout = 0
参考：
，你挤进地铁时，西藏的山鹰一直盘旋云端，
