Bug 1694213

Summary: Compute Nodes Need br-ex for OVN
Product: Red Hat OpenStack Reporter: Dan Sneddon <dsneddon>
Component: openstack-tripleo-heat-templatesAssignee: Kamil Sambor <ksambor>
Status: CLOSED ERRATA QA Contact: Sasha Smolyak <ssmolyak>
Severity: high Docs Contact:
Priority: high    
Version: 15.0 (Stein)CC: atonner, bfournie, dsneddon, ksambor, mburns, sasha, yobshans, ysubrama
Target Milestone: rcKeywords: Triaged
Target Release: 15.0 (Stein)Flags: ksambor: needinfo+
ksambor: needinfo+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: openstack-tripleo-heat-templates-10.5.1-0.20190701110422.889d4d4.el8ost Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-09-21 11:21:05 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:
Bug Depends On:    
Bug Blocks: 1713699    
Attachments:
Description Flags
computeovsdpdk sos report none

Description Dan Sneddon 2019-03-29 19:31:38 UTC 
Description of problem:
OVN uses distributed routing by default, similar to how ML2/OVS did DVR. This means that the compute nodes need a br-ex bridge by default, just like the controllers, but with no IP.

Version-Release number of selected component (if applicable):
OSP 15

How reproducible:
100%

Steps to Reproduce:
1. Deploy with existing configs
2.
3.

Actual results:
Unless the "compute-dvr.yaml" template is used with the multiple-nics templates, the Compute nodes will have no br-ex and external routing does not work.

Expected results:
Compute nodes should have a br-ex bridge (or a different name if the NeutronBridgeMappings are not "datacentre:br-ex").

Additional info:
We will have multiple releases that need to support both OVS and OVN. We may want to create a mechanism where the bridge is enabled via flag, so that either option can be easily deployed.
Comment 3 Bob Fournier 2019-04-11 14:19:03 UTC 
*** Bug 1698653 has been marked as a duplicate of this bug. ***
Comment 7 Bob Fournier 2019-05-23 23:30:26 UTC 
*** Bug 1713464 has been marked as a duplicate of this bug. ***
Comment 8 yogananth subramanian 2019-05-27 07:23:59 UTC 
ovs_neutron_agent in compute node terminates if Bridge br-ex is not present.

2019-05-23 13:22:00.165 24758 ERROR neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-08f03002-4bee-4acd-ace2-73097f699c12 - - - - -] Bridge br-ex for physical network datacentre does not exist. Agent terminated!
Comment 9 yogananth subramanian 2019-05-27 07:25:32 UTC 
Created attachment 1573782 [details]
computeovsdpdk sos report
Comment 10 Bob Fournier 2019-06-05 23:55:43 UTC 
Moving to ON_DEV until patch merges and is backported to stable/stein.
Comment 12 Alistair Tonner 2019-07-11 17:39:39 UTC 
Compute nodes now create correctly with bridge when using OSP15 geneve/DVR
Code verified.
Comment 16 errata-xmlrpc 2019-09-21 11:21:05 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-2019:2811