Just a quick guide to combine some of the steps from different articles people posted on discord. This method avoids having to create a whole new machine on Vultr and configure it again, you can use your existing host, upgrade it and then upgrade the software. I personally find this method faster but YMMV.
Please read these references first:
https://www.vultr.com/docs/how-to-upgrade-your-plan-without-reinstalling/
https://support.gala.games/en_US/Gala-Node-Software-Linux/how-do-i-run-a-founder%E2%80%99s-node-on-ubuntu-linux
This guide assumes you are using Vultr VPS hosting and that you have read the links above and upgraded your plan for your Gala Node host to 2vCPU, 4096MB RAM, 80GB SSD, 3.00TB Transfer
. However the steps should work on any VPS provider using Ubuntu.