Bug 1383073 - Nova scheduler sees wrong values of RAM/disk
Summary: Nova scheduler sees wrong values of RAM/disk
Keywords:
Status: CLOSED INSUFFICIENT_DATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: rhosp-director
Version: 10.0 (Newton)
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
: ---
Assignee: Angus Thomas
QA Contact: Omri Hochman
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-10-09 15:43 UTC by Alexandre Maumené
Modified: 2020-07-24 06:09 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-08-25 00:20:14 UTC
Target Upstream Version:

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

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.
Note You need to log in before you can comment on or make changes to this bug.