What do I need to look at to get this running? Is it possible to do this on $5 plan?
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Node, NGINX and MySQL can all be installed on Ubuntu via apt-get from the official repositories so they can certainly all run on one droplet.
While it will likely be possible to install this on a 512MB droplet, MySQL using it’s default configuration will likely exhaust the available memory and cause the service to crash at some point after you launch it. I would recommend a larger droplet or at least a swap file before you try and set this up.
This guide will walk you through installing Node.js
NGINX and MySQL can be installed by running
apt-get update
apt-get install nginx mysql-server
So for less that 10k users a month would I need to go bigger than $5 plan, would $10 do?