A few topics touched on this a little but not exactly what I was looking for. Basically, I want to perform a sysupgrade remotely. I am deployed and cannot do it locally. I have OpenVPN configured and can upgrade via ssh but my question is:
Do the OpenVPN configs get preserved and are they automatically reinstalled once the update is complete? I can reconfigure the rest of my settings and stuff as long as I can reconnect after the upgrade.
Thanks in advance!
Edit: Changed misleading title.
Configs, yes (unless you explicitly reject it, sysupgrade -n) - additionally installed packages, no (so if you need those to get online, you'll have a problem; e.g. openvpn).
Very personally I'd be wary to try an upgrade remotely via luci - and I'd be more confident in the current sysupgrade code (which was changed to be more self-contained/ atomic) than before (I think that's a post-17.01.x improvement) than the old for such a use case.
Ah okay, so you are saying that my openvpn configs would be saved but not the actual openvpn package itself, correct?
Correct (unless you build a custom firmware image including openvpn in the squashfs part of the firmware, rather than the overlay).
Well poop. Thank you so much! This could have really ruined my day!
In your current running router you should put something like this, also put the same in /files on your build image box to build newer images with this file embedded :
cat<<'EOF' >> /etc/sysupgrade.conf
Neither of those are necessary (all of those files are retained by default anyways!), nor will it help in the absence of the openvpn daemon (the binaries) - which you can't keep over an upgrade (without risking 'explosions' due to incompatible library ABIs).