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[Bug 1744455] [NEW] New instance on compute fails

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1744455@xxxxxxxxxxxxxxxxxx>
Date: Fri, 17 May 2019 16:55:38 -0000
Reply-to: Bug 1744455 <1744455@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

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I am installing openstack Pike release. While trying to create the
instance on compute node, I see the below errors in nova-schedular logs:

2018-01-20 16:17:31.864 1011 INFO nova.scheduler.host_manager [req-f0b60f13-637f-4856-a321-76914742652c - - - - -] Successfully synced instances from host 'compute'.
2018-01-20 16:18:28.287 1011 WARNING nova.scheduler.client.report [req-07c5ee94-dd71-4328-8f63-f24550f16e37 c8e5bcf05f67431ba5c89518238ef4d7 6a17e79098ab478fa728b4ace304d591 - default default] Unable to submit allocation for instance c9120f12-02b7-4515-ba9f-37faca050cc3 (409 <html>
 <head>
  <title>409 Conflict</title>
 </head>
 <body>
  <h1>409 Conflict</h1>
  There was a conflict when trying to complete your request.<br /><br />
Unable to allocate inventory: Unable to create allocation for 'VCPU' on resource provider '5841aceb-452b-44b2-b96d-653c394a543c'. The requested amount would violate inventory constraints.


 </body>
</html>)
2018-01-20 16:18:28.919 1011 WARNING nova.scheduler.client.report [req-07c5ee94-dd71-4328-8f63-f24550f16e37 c8e5bcf05f67431ba5c89518238ef4d7 6a17e79098ab478fa728b4ace304d591 - default default] Unable to submit allocation for instance c9120f12-02b7-4515-ba9f-37faca050cc3 (409 <html>
 <head>
  <title>409 Conflict</title>
 </head>
 <body>
  <h1>409 Conflict</h1>
  There was a conflict when trying to complete your request.<br /><br />
Unable to allocate inventory: Unable to create allocation for 'VCPU' on resource provider '5841aceb-452b-44b2-b96d-653c394a543c'. The requested amount would violate inventory constraints.


 </body>
</html>)


While Checking the resource available in nova registered compute. I don't see the problem.

MariaDB [nova]> select id,vcpus,vcpus_used,hypervisor_type,host,uuid,memory_mb,memory_mb_used from compute_nodes;
+----+-------+------------+-----------------+---------+--------------------------------------+-----------+----------------+
| id | vcpus | vcpus_used | hypervisor_type | host    | uuid                                 | memory_mb | memory_mb_used |
+----+-------+------------+-----------------+---------+--------------------------------------+-----------+----------------+
|  1 |     1 |          0 | QEMU            | compute | 5841aceb-452b-44b2-b96d-653c394a543c |      3723 |            696 |
+----+-------+------------+-----------------+---------+--------------------------------------+-----------+----------------+
1 row in set (0.00 sec)

MariaDB [nova]>

** Affects: nova
     Importance: Undecided
         Status: New

-- 
New instance on compute fails
https://bugs.launchpad.net/bugs/1744455
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