Bug 1365678

Summary:	obsolete network_device_mtu configuration persists in configuration files
Product:	Red Hat OpenStack	Reporter:	Brent Eagles <beagles>
Component:	openstack-puppet-modules	Assignee:	Brent Eagles <beagles>
Status:	CLOSED ERRATA	QA Contact:	Ofer Blaut <oblaut>
Severity:	high	Docs Contact:
Priority:	high
Version:	9.0 (Mitaka)	CC:	ihrachys, jguiditt, mburns, nyechiel, srevivo
Target Milestone:	ga	Keywords:	ZStream
Target Release:	9.0 (Mitaka)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	openstack-puppet-modules-8.1.8-2.el7ost	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1365892 1365949 (view as bug list)		Environment:
Last Closed:	2016-08-24 13:10:30 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:	1365153, 1365892, 1365949

Description Brent Eagles 2016-08-09 20:17:28 UTC

Description of problem:

Affects Upgrades!

MTU configuration was changed in mitaka. While the TripleO templates and puppet modules removed support, puppet controlled neutron configuration files are not being "purged" after an upgrade, leaving values that are no longer managed by puppet behind - including old network_device_mtu settings. While it is not the preferred mechanism for controlling MTU settings, neutron still contains code that will read and use this value.


How reproducible:

Currently 100% on existing nodes after an upgrade.

Comment 2 Brent Eagles 2016-08-09 20:20:08 UTC

Adding tracker for upstream patch pending CI/merging that can be employed to purge the neutron configs.

Comment 4 Ihar Hrachyshka 2016-08-10 07:40:18 UTC

Do we have a similar patch for Nova? I think network_device_mtu should be removed from nova.conf too, otherwise Nova will still attempt to use it for its side of data path (tap and qbr).

Comment 5 Ihar Hrachyshka 2016-08-10 07:50:02 UTC

I suspect the needed Nova backport is: https://review.openstack.org/#/c/353292/

Comment 7 Jason Guiditta 2016-08-10 14:37:40 UTC

Upstream is merged for both patches

Comment 10 Jason Guiditta 2016-08-11 16:40:20 UTC

Pulling back to on_dev due to new patch needed.  Brent, do we think this is the last one before I rebuild (once it merges)?

Comment 11 Jason Guiditta 2016-08-15 12:22:15 UTC

Adding mitaka patch (not yet merged) ref for puppet-openstacklib

Comment 13 Ofer Blaut 2016-08-23 13:53:33 UTC

openstack-puppet-modules-8.1.8-2.el7ost.noarch

test upgrade and tempest network scenario tests

Code it there as well

Comment 15 errata-xmlrpc 2016-08-24 13:10:30 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://rhn.redhat.com/errata/RHBA-2016-1764.html