I have many small Ubuntu devices at remote locations running on 18.04 LTS, used as VPN-Gateway only. All of them have an activated PRO subscription, thus receive all updates.
Configured are:
- 2 interfaces with /etc/network/interfaces.d/{eth0,eth1} (not netplan!)
- openvpn with one connection (certificate based)
- simple openvpn watchdog script running from cron.hourly
- dnsmasq (DNS and DHCP for eth1)
- netbird agent as second ways to connect
- zabbix agent
Is it possible/feasible to do an in-place upgrade? If yes, how would I proceed best?
In-place upgrade is preferred. Otherwise I have to prepare exchange devices for each remote site.
(limited Ubuntu knowledge here...)
