Connectivity lost while performing a minor/major update with external-update run --stack overcloud --tags ovn

Solution Verified - Updated

Environment

  • Red Hat Openstack Plataform 16.2.2, 16.2.3

Issue

Instance connectivity is lost for a variable amount of time (from 20 seconds to 3 minutes) when the following command is typed to update ovn controllers:

$ openstack overcloud external-update run --stack overcloud --tags ovn

Resolution

Do a minor upgrade to RHOSP 16.2.6.

Root Cause

  • The issue was solved in the following bugzilla:

This content is not included.https://bugzilla.redhat.com/show_bug.cgi?id=2111871

Diagnostic Steps

You might be affected by this bug when ovn versions are bumped to 21.12 because of an ovn database schema change

To check if you might be affected by this issue, perform the following steps::

  • Check the ovn version on your current containers:
sudo podman exec -ti ovn_controller rpm -qa | grep ovn
  • Go to the following url and in the tag field, select the version you want to upgrade to:

This content is not included.https://catalog.redhat.com/software/containers/rhosp-rhel8/openstack-ovn-controller/5de6c6b9bed8bd164a0c1e79

Then in the packages tab search for ovn

If the destination version is 21.12 and your current version is lower than it, you might be affected by this issue

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