Bug 2070035 - 16.1 -> 16.2 upgrade caused significant network downtime
Summary: 16.1 -> 16.2 upgrade caused significant network downtime
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: python-networking-ovn
Version: 16.2 (Train)
Hardware: All
OS: All
unspecified
high
Target Milestone: ---
: ---
Assignee: Rodolfo Alonso
QA Contact: Eran Kuris
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-03-30 10:49 UTC by Alex Stupnikov
Modified: 2023-07-21 08:23 UTC (History)
6 users (show)

Fixed In Version:
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Last Closed: 2023-07-21 08:23:43 UTC
Target Upstream Version:
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Red Hat Issue Tracker OSP-14388 0 None None None 2022-03-30 10:52:47 UTC

Description Alex Stupnikov 2022-03-30 10:49:08 UTC 
Description of problem:

One of our customers reported a problem with all instances (not 100% sure, but he believes that all instances are affected) connectivity during RHOSP 16.1.6 --> RHOSP 16.2.1 upgrade.

From provided logs it looks like Deployment Framework acted properly to address problem described in https://bugzilla.redhat.com/show_bug.cgi?id=1895220#c6 and OVN controllers were restarted and updated before ovn-northd.

At the same time, instances were not available for significant period of time, which could be related to some problem inside OVN. I can't find related error in compute logs.

I would like to ask for engineering help with OVN troubleshooting and possible bug isolation.
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