Bug 1552214

Summary:	TripleO should configure cinder's backend_host (not host) setting for HA
Product:	Red Hat OpenStack	Reporter:	Alan Bishop <abishop>
Component:	openstack-tripleo-heat-templates	Assignee:	Alan Bishop <abishop>
Status:	CLOSED ERRATA	QA Contact:	Avi Avraham <aavraham>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	12.0 (Pike)	CC:	eharney, geguileo, jjoyce, knylande, mburns, rhel-osp-director-maint, tshefi
Target Milestone:	beta	Keywords:	Triaged
Target Release:	13.0 (Queens)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	openstack-tripleo-heat-templates-8.0.2-0.20180414062830.5f869f2.el7ost puppet-tripleo-8.3.2-0.20180411174307.el7ost puppet-cinder-12.4.1-0.20180329071637.4011a82.el7ost	Doc Type:	Bug Fix
Doc Text:	When configuring the cinder-volume service for HA, cinder's DEFAULT/host configuration was set to "hostgroup". Other cinder services (cinder-api, cinder-scheduler, cinder-backup) would use "hostgroup" for their configuration, regardless of which overcloud node was running the service. Log messages from these services looked like they all originated from the same "hostgroup" host, which made it difficult to know which node generated the message. When deploying for HA, cinder-volume's backend_host is set to "hostgroup" instead of setting DEFAULT/host to that value. This ensures each node's DEFAULT/host value is unique. Consequently, log messages from cinder-api, cinder-scheduler, and cinder-backup are correctly associated with the node that generated the message.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-06-27 13:35:05 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:

Description Alan Bishop 2018-03-06 17:17:22 UTC

Description of problem:

The cinder-volume service requires backend drivers uses a common value (typically "hostgroup") for the host configuration. However, this should be done using the special 'backend_host' config option, and not the 'host' option specified in the DEFAULT section of cinder.conf.

Version-Release number of selected component (if applicable):


How reproducible: Always

Steps to Reproduce:
1. Deploy cinder-volume service under pacemaker
2.
3.

Actual results:

The 'host' option in the DEFAULT section of cinder.conf is set to "hostgroup"

Expected results:

For every cinder-volume backend driver enabled, the 'backend_host' option in the backend sections of cinder.conf should be set to "hostgroup"

Additional info:

Comment 3 Alan Bishop 2018-04-23 19:21:18 UTC

Upstream patches have been merged to stable/queens.

Comment 4 Alan Bishop 2018-04-23 19:53:46 UTC

I verified the changes are already in the latest OSP-13 puddle.

Comment 9 Tzach Shefi 2018-05-17 05:50:11 UTC

Verified on:
openstack-tripleo-heat-templates-8.0.2-14.el7ost.noarch

Example of deployment with ceph backend. 

[root@controller-0 ~]# tail  /var/lib/config-data/puppet-generated/cinder/etc/cinder/cinder.conf 

[tripleo_ceph]
backend_host=hostgroup     -> looking good to verify! 
volume_backend_name=tripleo_ceph
volume_driver=cinder.volume.drivers.rbd.RBDDriver
rbd_ceph_conf=/etc/ceph/ceph.conf
rbd_user=openstack
rbd_pool=volumes

Comment 11 errata-xmlrpc 2018-06-27 13:35:05 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2018:2086