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Bug 1667013

Summary:	[Docs] Provide instructions on how to use overcloud-minimal image
Product:	Red Hat OpenStack	Reporter:	Giulio Fidente <gfidente>
Component:	documentation	Assignee:	ndeevy <ndeevy>
Status:	CLOSED CURRENTRELEASE	QA Contact:	RHOS Documentation Team <rhos-docs>
Severity:	unspecified	Docs Contact:
Priority:	high
Version:	14.0 (Rocky)	CC:	dcadzow, jschluet, lmarsh, ndeevy, pgrist, rhos-docs, yrabl
Target Milestone:	---	Keywords:	ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1667011	Environment:
Last Closed:	2019-04-23 07:19:01 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1651250
Bug Blocks:

Description Giulio Fidente 2019-01-17 08:52:50 UTC

+++ This bug was initially created as a clone of Bug #1667011 +++

We should document how to use the special overcloud-minimal image for those Director roles which do not need to host any OpenStack service, for example the CephStorage role.

Nodes which don't need to host OpenStack services can use the overcloud-minimal image so that they do not consume up an OpenStack entitlement.

All roles use by default the overcloud-full image but, for those roles which should use the overcloud-minimal image instead, operators can customize the image name to use via Heat environment file.

The Heat parameter to use is built appending the "Image" suffix to the role name; for example, for the CephStorage role, the environment file would look like this:

parameter_defaults:
  CephStorageImage: overcloud-minimal

Comment 6 ndeevy 2019-04-23 07:19:01 UTC

Updated and merged for OSP14-rocky in the following guides:

https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/14/html-single/deploying_an_overcloud_with_containerized_red_hat_ceph/index#defining-the-root-disk

https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/14/html-single/director_installation_and_usage/index#defining-the-root-disk

Comment 7 ndeevy 2019-09-17 13:32:46 UTC

Minor additional updates from the technical editor's review:

https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/14/html-single/deploying_an_overcloud_with_containerized_red_hat_ceph/index#defining-the-root-disk

https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/14/html-single/director_installation_and_usage/index#defining-the-root-disk