No valid host was found. There are not enough hosts available---openstack建虚拟机报错

admin

、进数据查看数据库表
mysql> use nova_api;
mysql[nova_api] >  select * from resource_providers;
+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
) L/ e% q0 v! M/ |8 [# b9 w| created_at          | updated_at          | id | uuid                                 | name     | generation | can_host | root_provider_id | parent_provider_id |
2 J% [% _: B1 x9 I3 E; e+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
9 T0 P- v* p- h# F| 2019-11-21 06:17:39 | 2019-11-21 06:17:41 |  3 | 16d1bd53-7919-4fef-9a11-a0e98c149823 | compute1 |          1 |     NULL |                3 |               NULL |
3 A4 a- o7 k& ^7 o9 s+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
1 row in set (0.00 sec)
0 R2 I5 k8 E$ d2 _3 M3 k! d7 c, ]+ t
发现有数据。重新创建虚拟机，依然会发生报错，
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、尝试将compute节点从nova service-list中删除，并重新加入到集群中
# 停掉compute节点的nova-compute 服务
6 P2 m3 l& h  Y: Znova service-delete <计算节点的uuid>
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  g2 z; |* G7 `2 Y# 开启计算节点的nova-compute服务，让计算节点重新注册
% S& K; `& a' P0 j: k' N5 p尝试创建虚拟机，发现还是报错。返回去，查看nova-compute的日志发现 There was a conflict when trying to complete your request.\n\n Conflicting resource provider name: compute1 already exists. 。提示矛盾。
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、再次进入数据库，执行 select * from resource_providers;
7 |8 _% V; \' E2 q( q3 ^7 M$ jmysql> use nova_api;
' W9 @" v: L* Zmysql[nova_api] >  select * from resource_providers;
+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
7 X8 x* l/ X  L8 G% Z9 H' D| created_at          | updated_at          | id | uuid                                 | name     | generation | can_host | root_provider_id | parent_provider_id |
+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
| 2019-11-21 06:17:39 | 2019-11-21 06:17:41 |  3 | 16d1bd53-7919-4fef-9a11-a0e98c149823 | compute1 |          1 |     NULL |                3 |               NULL |
+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
1 row in set (0.00 sec)
- w+ P* P7 \+ j3 d% c发现新注册的计算节点，但是resource_providers的uuid 没有发生变化，怀疑是注册compute节点的时候，并没有更新resource_providers，尝试删除resource_providers;


最主要时因为注册出了问题。解决注册的问题即可。

8 ~7 l3 l' Y# \' `