Upgrading a Docker-based Discourse Forum instance

Discourse is the world-leading online web-based forum. It's a superb, extremely mature-and-yet-cutting edge platform. It also happens to be Free and Open Source Software, which is why we, at the OER Foundation, use it.

Like all good software, it's undergoing continuous improvement by its developer community who release fairly frequent - perhaps every couple weeks - updates. Luckily, keeping your Discourse forum up-to-date isn't particularly onerous.

Creating Linux shell users with sudo and SSH access

With Linux servers, both local and in "the Cloud" (aka a Virtual Private Server or VPS), access is generally remote via a command line interface. This tutorial covers the process of creating normal shell (command line) users who have the ability to perform administrative tasks (via the 'sudo' - Super User DO - mechanism), as well as configuring that user to be able to log in from their workstation via SecureShell (SSH) without needing to enter a password (i.e. using public-private key pairs).

BBB Tutorial Schedule

The schedule for the Samoa Knowledge Society Initiative (SKSI) BigBlueButton Tutorial is as follows:

Before the tutorial

Please create an account on the forum we have set up for the MESC Lifelong Learning Lab. (This free and open source software forum application is powered by Discourse).

It would be great if you could introduce yourself in the Introductions forum before the tutorial commences.

Installing MariaDB on Ubuntu 20.04

At the OER Foundation, we have the convention of using Docker to deploy most components of the web services we offer. One notable exception to that is the way we deploy our most widely used database. Rather than deploying a separate MySQL/MariaDB container for every service on a given host, we instead deploy a single instance running on the host. We do this for a couple reasons:

Creating strong random passwords

Throughout our Free and Open Source Software tutorials, we need to specify passwords for things. Creating random passwords is surprisingly hard, but we've found a method that's very serviceable and makes it easy to do as we all should: ensure every separate identity or service has a strong password that is unique to that identity and application (i.e. never use the same password in more than one place). We also strongly encourage you all to track your passwords using a password manager!

Setting up OERu-style virtual Ubuntu 20.04 or 22.04 server for Docker Compose

Here at the OER Foundation, where we build and maintain the computer services used by the OERu, its learners, and its educators around the globe, we've come up with a tech process that seems to work very nicely, with minimal cost and maintenance overhead. It involves setting up hosting infrastructure to adhere to some conventions that have emerged over time (and are subject to change if we identify better ones).