puppet-ovn/releasenotes/notes/ovn_ofctrl_wait_before_clea...

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YAML

---
features:
- |
The new ``ovn::controller::ovn_ofctrl_wait_before_clear`` parameter
has been added to resolve an issue with dataplane downtime during
upgrades that involve OVN schema changes. It will delay delting and
re-adding openflow rules by the configured time in ms to give
ovn-controller time to handle db connection / reconnection that can
happen in this case. The default of 8000ms is based on upstream OVN
testing with 200k openflow rules. Since it involved a change in
behavior, the upstream OVN value defaults to unset.