Bug 1383073

Summary: Nova scheduler sees wrong values of RAM/disk
Product: Red Hat OpenStack Reporter: Alexandre Maumené <amaumene>
Component: rhosp-directorAssignee: Angus Thomas <athomas>
Status: CLOSED INSUFFICIENT_DATA QA Contact: Omri Hochman <ohochman>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 10.0 (Newton)CC: bfournie, dbecker, lmartins, mburns, morazi, rhel-osp-director-maint
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Last Closed: 2017-08-25 00:20:14 UTC Type: Bug
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Description Alexandre Maumené 2016-10-09 15:43:33 UTC 
Description of problem:
When deploying:
2968:2016-10-09 17:41:29.769 1532 DEBUG nova.scheduler.filters.ram_filter [req-9582bca7-ba7a-4099-98a0-25e8303f8f45 d5d5a01d3a9a4779b8
7cd3da53830d08 72510ce285f7480693ef1bd9fd46ae80 - - -] (undercloud1.hackfest.apac, 5c9d4adc-0356-4815-ac2d-07dd5254c337) ram: 0MB disk
: 0MB io_ops: 0 instances: 0 does not have 4096 MB usable ram before overcommit, it only has 0 MB. host_passes /usr/lib/python2.7/site
-packages/nova/scheduler/filters/ram_filter.py:45

During introspection the correct value or RAM/disk is reported to ironic but after deployment the node goes to no valid host found cause nova-scheduler thinks it 0 disk and 0 ram.

Version-Release number of selected component (if applicable):
Latest puddle (2016-10-07.4).

How reproducible:
Every time

2016-10-06.1 puddle is not affected.
Comment 1 Lucas Alvares Gomes 2016-12-12 15:26:28 UTC 
Hi Alexandre,

It may take a while to the values to be propagated from Ironic to Nova or if the node in Ironic is in maintenance Nova will set it all to 0 so that it won't be able to schedule an instance to that node.

Can you please provide the output of the following commands:

$ (for each node) ironic node-show <node name/UUID>

$ nova hypervisor-stats

Also the logs from nova-compute, nova-scheduler and ironic-conductor services ?

Thanks
Comment 2 Bob Fournier 2017-08-25 00:20:14 UTC 
Closing this as requested info not received for 9 months.