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
: ?5 b6 L% Z& B. i6 xmysql> use nova_api;
8 o. ~) S! |7 G% K) Bmysql[nova_api] >  select * from resource_providers;
+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
| created_at          | updated_at          | id | uuid                                 | name     | generation | can_host | root_provider_id | parent_provider_id |
+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
5 I: X; n% n8 f" C; Y# r+ b' I| 2019-11-21 06:17:39 | 2019-11-21 06:17:41 |  3 | 16d1bd53-7919-4fef-9a11-a0e98c149823 | compute1 |          1 |     NULL |                3 |               NULL |
9 P. X& Q  C4 k1 {# ?# r+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
, I% O5 ?4 z* `' ^& J5 k1 row in set (0.00 sec)
2 n5 f  J6 p6 ]8 N; G! b
发现有数据。重新创建虚拟机，依然会发生报错，
5 R; {. m" J1 j: |% H
# \8 C' h& y7 P! K2 O" B; ?、尝试将compute节点从nova service-list中删除，并重新加入到集群中
: e4 [# ?/ q) n8 `# 停掉compute节点的nova-compute 服务
1 I5 ?, D) x6 j1 y/ _6 d) |& Anova service-delete <计算节点的uuid>

9 `+ _/ T- L/ r  Y# 开启计算节点的nova-compute服务，让计算节点重新注册
  j9 x+ Q6 K1 g0 E. Q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。
( ?2 L( Y% V8 {4 H
, v" Q8 }2 o8 |、再次进入数据库，执行 select * from resource_providers;
0 D+ p% J: O& _# vmysql> use nova_api;
mysql[nova_api] >  select * from resource_providers;
+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
| created_at          | updated_at          | id | uuid                                 | name     | generation | can_host | root_provider_id | parent_provider_id |
$ x( Z- N* e: l9 m  F+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
9 R- Q; ?1 ^3 Q/ u8 a| 2019-11-21 06:17:39 | 2019-11-21 06:17:41 |  3 | 16d1bd53-7919-4fef-9a11-a0e98c149823 | compute1 |          1 |     NULL |                3 |               NULL |
+---------------------+---------------------+----+--------------------------------------+----------+------------+----------+------------------+--------------------+
. V6 K, B4 G9 |* F9 b1 row in set (0.00 sec)
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;
* C3 Q* w& g9 A3 G1 h, q$ z

8 W1 _' ?; ?, x: z最主要时因为注册出了问题。解决注册的问题即可。