Sorry this has probably been asked before but i could not find an answer.
Just noticed that the OMV 4 EOL is coming soon so i need to upgrade.
Im currently using the omv plugins nginx, mariadb, letsencrypt, cups (printing) and docker that wont be available anymore after the upgrade. So i have a few Questions:
1. Docker:
Docker is of course still available but the current OMV-UI won't be available and i would have to switch to portainer for UI Access.
I have my docker base directory not on the system drive, an OMV5 upgrade will keep this intact and working or are there additional Steps to keep this running and working with portainer?
2. Nginx:
My nginx sites/proxies will have to be moved to docker, this should not be that hard since i can just use my current configs.
OMV is only internally available with port 8080 so i can just let my nginx docker keep using the normal http ports.
OMV-GUI will probably still use nginx on the base system?
3. MariaDB:
I could install mariadb in docker but is it a bad idea to install this just on the base debian system using apt or is there allready a mysql server running for OMV that could conflict with this? I will of course have to export my current db as an sql backup.
3. letsencrypt:
the current plugin is allready a bit broken but it still works. My dyndns provider (desec) allows upgrades using DNS challenge mechanism and i wont need any http access for verification. i probably end up just running certbot on the base debian system. As i only need those certificates in nginx i wont bother with importing them for omv-gui. OMV GUI will only be available on the local network or wireguard vpn so i wont bother with encrypting there.
4. CUPS / Printing
I only have this installed to share my USB Only Laserprinter that is over 10 years old but the replacement cartridges are dirt cheap and it still works great.
Guess i have to move cups to docker and grant the container access to the correct /dev entry.
CUPS is a bit of an overkill for this little setup, is there a more lightweight alternative?
Besides that my current shares (SMB, NFS) should upgrade fine to omv5?
I will of course backup my System partition before upgrading but is there anything else i should do before upgrading my system to omv5? (Remove my custom nginx servers, remove plugins etc)