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---
tags:
- groupvps
---
- Makes a backup of OVN db's on networking nodes
- Creates files on the local system under /tmp
- Creates files on the remote system under /var/.ovn-backups
- Pins the controller version on both compute and networking nodes
- `ovs-vsctl set open_vswitch . external_ids:ovn-match-northd-version=true`
- Upgrades ovn-central, ovn-common and ovn-host on network nodes
- Installs packages
- restarts ovn-controller, ovn-northd, ovn-ovsdb-server-sb/nb
- Checks ovsdb-server is running
- Checks the socket file for existence
- Upgrades ovn controller on compute nodes
- Installs package
- restart ovn-controller
**Invocation**
```
ansible-playbook playbooks/failsafe_install_ovn.yml --limit vps_testpod --extra-vars "ovn_search_version=22.03.8+20250403.1251.35813e0b.systems.jammy1"
```
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