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---
tags:
- work
- ovn
- upgrade
---
https://docs.ovn.org/en/latest/intro/install/ovn-upgrades.html
**Fail-safe upgrade procedure**
Pins ovn-controller version. Then upgrades databases followed by ovn controllers.
Used to upgrade between non LTS version or from LTS to non LTS etc.
**Rolling-upgrade**
From LTS to the next LTS.
Upgrades ovn controllers first, then upgrade databases.
[[Custom OVN debian packaging]]
[[Checklist for network node issues after rebooting]]
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