[Wiki.js](https://wiki.js.org/) is a free and open source, modern wiki application built on Node.js, MongoDB, Git and Markdown. Wiki.js source code is publicly hosted on [Github](https://github.com/Requarks/wiki). This guide will show you how to install Wiki.js on a fresh CentOS 7 Vultr instance using Node.js, MongoDB, PM2, Nginx, Git and Acme.sh. Requirements to run Wiki.js are the following: - Node.js version 6.9.0 or later - MongoDB version 3.2 or later - Nginx - Git version 2.7.4 or......