Finally getting around to upgrading my DigitalOcean Ubutu LAMP droplet from Ubuntu 14 -> 16.
- BACKUP db (I forgot this step!!). Ideally copy db dump to local
- Make a snapshot of droplet
- sudo apt-get update
- sudo apt-get upgrade
- sudo apt-get install update-manager-core
- sudo do-release-upgrade
For DigitalOcean it says not to worry about the SSH issue so just type ‘y’ through the rest of the prompts.
I ran into a bunch of strange ‘error’ messages and just ignored them and seemed like everything came out OK. Hope it does for you too