Bug 1237150 – Need support for NFS for glance

Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.

Bug 1237150 - Need support for NFS for glance

Summary:	Need support for NFS for glance

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat OpenStack
Classification:	Red Hat
Component:	rhosp-director (Show other bugs)
Sub Component:
Version:	Director
Hardware:	Unspecified Unspecified

Priority	high Severity urgent
Target Milestone:	async
Target Release:	Director
Assigned To:	Jiri Stransky
QA Contact:	nlevinki
Docs Contact:

URL:
Whiteboard:
Keywords:	Triaged, ZStream

Depends On:	1247585
Blocks:
	Show dependency tree / graph

Reported:	2015-06-30 09:32 EDT by Mike Burns
Modified:	2015-08-05 09:57 EDT (History)
CC List:	9 users (show)

See Also:
Fixed In Version:	openstack-tripleo-heat-templates-0.8.6-31.el7ost
Doc Type:	Enhancement
Doc Text:	The glance backend was hard coded to use swift. This meant you could not use other file system types, such as NFS, for glance. This release adds a new enhancement that provides a NFS backend for glance. You can now configure the Overcloud's glance service an NFS backend using the following parameters: * GlanceBackend * GlanceFilePcmkManage * GlanceFilePcmkDevice * GlanceFilePcmkOptions
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-08-05 09:57:51 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
OpenStack gerrit	199152	None	None	None	Never
Red Hat Product Errata	RHEA-2015:1549	normal	SHIPPED_LIVE	Red Hat Enterprise Linux OpenStack Platform director Release	2015-08-05 13:49:10 EDT

Groups: None (edit)

Description Mike Burns 2015-06-30 09:32:16 EDT

Description of problem:
Currently director only deploys glance with local file, Ceph, or swift backends.  

We need to have NFS support as well for glance

Additional info:

* We essentially lock out the larger storage vendors who support NFS but are not already integrated.
* We hurt POC cases where setting up a random NFS server is easy, but Ceph deployment is more complicated/resource intensive/time consuming
* We essentially require swift or ceph for HA use case.

Comment 3 Jiri Stransky 2015-07-08 04:14:14 EDT

On review upstream: https://review.openstack.org/#/c/199152/

How i tested:

Create a NFS export reachable from the overcloud. I'm using virtual
setup, so i'm exporting from the bare metal host.

yum -y install nfs-utils
systemctl start rpcbind
systemctl start nfs-server
setsebool -P nfs_export_all_rw 1

mkdir -p /export/glance
chown -R nfsnobody:nfsnobody /export
echo "/export/glance *(rw,sync,no_root_squash)" > /etc/exports
exportfs -rav

showmount -e


Set these parameters on the overcloud heat stack (i used an extra
environment file, but the workflow with Tuskar might be different):

parameters:
  GlanceBackend: file
  GlanceFilePcmkDevice: 192.168.122.1:/export/glance
  GlanceFilePcmkManage: true
  GlanceFilePcmkOptions: retry=1


You can verify that everything works as expected by uploading a glance
image and launching an instance in the overcloud.

And verify that on the bare metal the volume appeared in the exported
directory:

You can see the mount on the controllers:

mount | grep glance


And any image files present on the NFS host:

ls /export/glance

Comment 4 Jiri Stransky 2015-07-09 07:42:31 EDT

Typo in the testing steps above -- use all_squash instead of no_root_squash when exporting the directory on NFS host:

echo "/export/glance *(rw,sync,all_squash)" > /etc/exports

Comment 6 Alexander Chuzhoy 2015-07-31 12:33:36 EDT

Verified: FailedQA

Environment:
instack-undercloud-2.1.2-22.el7ost.noarch
openstack-tripleo-heat-templates-0.8.6-45.el7ost.noarch


Wasn't able to create an image with glance command.

In order to overcome, had to:
1. Apply this patch:  https://gist.github.com/jistr/08d3d6ae82f1e99773d1 prior to the overcloud deployment.
2. Re-mount the NFS share with these args: "mount -t nfs -o context=system_u:object_r:glance_var_lib_t:s0"

* This can be achieved with placing the following lines in the parameters section of the yaml file:
  GlanceBackend: file
  GlanceFilePcmkDevice: [IP:/share]
  GlanceFilePcmkManage: true
  GlanceFilePcmkOptions: context=system_u:object_r:glance_var_lib_t:s0

Comment 7 Mike Burns 2015-07-31 12:37:18 EDT

This is resolved with the fix for bug 1247585

Comment 10 errata-xmlrpc 2015-08-05 09:57:51 EDT

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-2015:1549

Note You need to log in before you can comment on or make changes to this bug.