Red Hat Bugzilla – Bug 1563412
FFU: nova compute reserved_host_memory_mb gets increased from 2048 to 4096 after the upgrade process
Last modified: 2018-08-05 23:57:03 EDT
Description of problem: FFU: nova compute reserved_host_memory_mb gets increased from 2048 to 4096 after the upgrade process: Before upgrade: [root@compute-0 heat-admin]# grep reserved_host_memory_mb /etc/nova/nova.conf reserved_host_memory_mb=2048 After upgrade: [root@compute-0 heat-admin]# docker exec nova_compute grep reserved_host_memory_mb /etc/nova/nova.conf #reserved_host_memory_mb=512 reserved_host_memory_mb=4096 Version-Release number of selected component (if applicable): openstack-tripleo-heat-templates-8.0.2-0.20180327213843.f25e2d8.el7ost.noarch How reproducible: 100% Steps to Reproduce: 1. Deploy OSP10 2. Check reserved_host_memory_mb in /etc/nova/nova.conf 3. Run through the FFU process 4. Check reserved_host_memory_mb in /etc/nova/nova.conf Actual results: The before/after values do not match. Expected results: This change of value may affect the initial resource capacity estimations that were taken into consideration during the OSP10 deplyoment. Additional info: I'm not sure what caused this increase in requirements but in any case we should document this change so the operators are aware and can take preventive action by overriding the value pre upgrade.
Hi, can we make this into OSP13 documentation?
Setting release note flag for this item.
Changing requires_doc_text flag back to ? until meaningful text is added. There is currently nothing in the doc text field to pull into the Release Notes, and this results in a blank entry.
just discussed on ffu call can you please check this... is it docs only and should we re-assign
We need to notify users that there was change to defaults.
Hi, do you need additional information for adding this notification into the doc ? thanks,
Hi Sofer, Beyond a release note letting people know about this change, is there anything else required? - Dan
Hey Marius, I tend to agree with Dan that a release note could be enough here. Would that fit the bill ?
(In reply to Sofer Athlan-Guyot from comment #10) > Hey Marius, > > I tend to agree with Dan that a release note could be enough here. Would > that fit the bill ? Hey Sofer, Yes, release note works. Just to add for the info here, the nova host reserved memory can be configured via NovaReservedHostMemory parameter.
This should now appear in the GA release notes. @Marius, how does that look to you?
(In reply to Dan Macpherson from comment #14) > This should now appear in the GA release notes. @Marius, how does that look > to you? Looks good to me. Thanks Dan!