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How to Install NodeBB Forum on Ubuntu 18.04 LTS

NodeBB is a Node.js based forum software built for the modern web. It’s built on either a MongoDB or Redis database. In this guide, we will walk you through the NodeBB installation process on the Ubuntu 18.04 LTS operating system by using Nginx as a reverse proxy, MongoDB as the database and acme.sh and Let’s Encrypt for HTTPS.