Bug 1516280

Summary:	[Doc]: Upgrade of cluster from 2.4 to 3.0 in ubuntu require changes in upgrade path
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Ramakrishnan Periyasamy <rperiyas>
Component:	Documentation	Assignee:	Erin Donnelly <edonnell>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Ramakrishnan Periyasamy <rperiyas>
Severity:	urgent	Docs Contact:
Priority:	high
Version:	3.0	CC:	asriram, hnallurv, kdreyer
Target Milestone:	rc
Target Release:	3.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-12-26 03:41:28 UTC	Type:	Bug
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:
Bug Blocks:	1496210

Description Ramakrishnan Periyasamy 2017-11-22 12:01:56 UTC

Description of problem:

While upgrading ubuntu cluster from 2.4 to 3.0 please update below changes in upgrade doc.

Note: in 2.4 ubuntu cluster is installed from RHEL machine ceph-ansible but in 3.0 Ubuntu machine ceph-ansible is supported and it requires following changes. Please add this information in pre-requisite section.

1. Update all.yml according to the new ceph-ansible supported params (basically we need to add all info as in installation.)
2. Update /etc/ansible/hosts file with custom osd_scenarios if any
3. Change "generate_fsid" to false, this param is default true and if not changed to false then cluster fsid will be changed during rolling upgrade.
"generate_fsid: false"
4. Update "fsid" param to existing cluster fsid.
fsid: 'eb2091ec-4a92-47aa-b953-17094f8bcc2f'

Comment 3 Ramakrishnan Periyasamy 2017-11-22 12:16:53 UTC

The above changes required only for ubuntu upgrade. RHEL upgrade will work without above changes.

Comment 9 Ramakrishnan Periyasamy 2017-11-30 07:06:22 UTC

Thanks Erin, The doc text looks good. Moving this bug to verified state.

Comment 10 Ramakrishnan Periyasamy 2017-12-01 09:38:22 UTC

Hi Erin,

Re-opening this bug for adding the "note" which is in bug description. It is important since from 3.0 ubuntu cluster can be configured using ceph-ansible on Ubuntu.


Please add below text in the Note section before pre-requisite of ubuntu upgrade doc.

"RHCS 3.0 supports ceph-ansible on Ubuntu. We recommend you to install the 3.0 based ceph-anisble (a link to install ceph-ansible can be provided here) on a Ubuntu node and use the below mentioned details to continue with upgrade."

Thanks.

Comment 11 Ramakrishnan Periyasamy 2017-12-01 09:44:44 UTC

(In reply to Ramakrishnan Periyasamy from comment #10)
 
> "RHCS 3.0 supports ceph-ansible on Ubuntu. We recommend you to install the
> 3.0 based ceph-anisble (a link to install ceph-ansible can be provided here)
> on a Ubuntu node and use the below mentioned details to continue with
> upgrade."

Missed this during verification of bug, Please add the comment and move the bug to ON_QA

Comment 13 Ramakrishnan Periyasamy 2017-12-04 08:23:23 UTC

Erin, Thank you for the update.

Doc looks good now moving this bug to verified state.