No valid host was found.

提示500错误
root@ubuntu:/var/log/nova# grep -i error nova-*.log
nova-conductor.log:2017-06-05 11:12:27.235 3880 ERROR nova.scheduler.driver [req-688f85e4-9812-4c7e-aa36-31076f6e1478 None] Exception during scheduler.run_instance
nova-conductor.log:2017-06-05 11:12:27.349 3880 WARNING nova.scheduler.driver [req-688f85e4-9812-4c7e-aa36-31076f6e1478 None] [instance: b93c92d6-504d-401c-a9d1-2a306d291d0a] Setting instance to ERROR state.
nova-conductor.log:2017-06-05 11:18:02.503 3879 ERROR nova.scheduler.driver [req-94dba04a-365d-492e-b4e3-23f7c52bbb99 None] Exception during scheduler.run_instance
nova-conductor.log:2017-06-05 11:18:02.528 3879 WARNING nova.scheduler.driver [req-94dba04a-365d-492e-b4e3-23f7c52bbb99 None] [instance: 20f10285-1807-4175-84ab-1cdc035c4eed] Setting instance to ERROR state.
nova-conductor.log:2017-06-05 13:27:10.438 3960 WARNING nova.scheduler.driver [req-81442300-a1da-4faf-93b4-a6830fefecf4 None] [instance: 5a396ba3-1054-4f3f-99a6-6573356b7fe8] Setting instance to ERROR state.

哪位大神给解惑一下

648423231 发表于 2017-6-5 17:39
哪位大神给解惑一下

常见的问题，但是原因很多，任何一个组件出现问题，都可能出现这种情况。
下面内容供楼主参考
【已解决】启动云主机时，No valid host was found.
http://www.aboutyun.com/forum.php?mod=viewthread&tid=11203

求助 ！急！你们肯定遇到过的，创建云主机失败，500错误，No valid host was found...

http://www.aboutyun.com/forum.php?mod=viewthread&tid=21255

新手求助！无法启动实例

http://www.aboutyun.com/forum.php?mod=viewthread&tid=14924

openstack M版创建云主机No valid host was found. There are not

http://www.aboutyun.com/forum.php?mod=viewthread&tid=20099



openstack创建云主机报错：No valid host was found. There are not en...
http://www.aboutyun.com/forum.php?mod=viewthread&tid=19757

求助帖：实例状态为ERROR

http://www.aboutyun.com/forum.php?mod=viewthread&tid=18550

openstack test用户创建虚拟机分配floating ip 时提示：无端口可用

http://www.aboutyun.com/forum.php?mod=viewthread&tid=8858