Bug 1295033

Summary: RFE: unable to configure backends of cinder(overcloud nodes) from undercloud
Product: Red Hat OpenStack Reporter: Pratik Pravin Bandarkar <pbandark>
Component: openstack-tripleo-heat-templatesAssignee: Giulio Fidente <gfidente>
Status: CLOSED DUPLICATE QA Contact: yeylon <yeylon>
Severity: high Docs Contact:
Priority: high    
Version: 7.0 (Kilo)CC: gfidente, jcoufal, mburns, mcornea, rhel-osp-director-maint, rtweed, srevivo, yeylon
Target Milestone: y1Keywords: Documentation, FutureFeature, ZStream
Target Release: 8.0 (Liberty)   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of:
: 1302085 (view as bug list) Environment:
Last Closed: 2016-02-18 14:49:16 UTC Type: Bug
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Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1302085, 1339413    

Description Pratik Pravin Bandarkar 2016-01-01 07:28:27 UTC 
Description of problem:
OSP Director is the Red Hat strategic tool to deploy OpenStack in Production environments from version OSP7 onward. Customers prefer to use Enterprise Storage array backend for cinder. Currently there are no steps to deploy OpenStack using OSP Director and integrating with EMC storage array backend with cinder.

Document all the steps to configure EMC storage backend for cinder/glance/nova via OSP Director. 

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Comment 3 Pratik Pravin Bandarkar 2016-01-20 12:08:00 UTC 
Updated bz description: 

I tried adding cinder backend of overcloud node from undercloud by updating manifest and hieradata on undercloud node. and i was able to configure backend. But, it do not configure value of "enabled_backend" in the configuration file. 

Also, what I observed is, after initial deployment, if we update hieradata file with new values and rerun the deployment `openstack overcloud deploy`, the new values from hieradata do not reflect on overcloud nodes. From overcloud node, I can see older values in hieradata.

as per my discussion with engineering team, currently its not to update "enabled_backend" from undercloud node. So, its bug from director component rather than doc bz.
Comment 4 Giulio Fidente 2016-01-27 10:05:37 UTC 
hi Pratik, with the change at [1] you should be able to add an arbitrary backend to the list of the backends enabled in Cinder by passing its config stanza name in a list, like the following:

  cinder_user_enabled_backends: ["my_additional_backend_stanza_name"]

can you see if that works for you?

1. https://review.openstack.org/269534