16 July 2023 / Julian-Samuel Gebühr

Hosting static sites with Traefik

Hosting Static Sites with Traefik and Static Web Server

Traefik is amazing to host complex services like with containers. On the other hand it’s harder than you’d think to host a simple static html site. I wanted to share my current approach that is based on Static Web Server Project.

Static Web Server (SWS)

Static Web Server (or SWS abbreviated) is a simple and really fast web server with the goal to serve static web files or assets. The tiny docker image is only 4 MB with a small memory footprint. We can therefore afford to run a container for each static site.

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07 July 2023 / Julian-Samuel Gebühr

Moitoring IoT devices with MASH - Part 1

This article is about monitoring some IoT devices (e.g. a CO2 sensor) with a combination of Mosquitto (a MQTT broker), Telegraf (a metric collector), InfluxDB (a time-series database) and Grafana (for displaying everything nicely). All mentioned services should run on a server that can be reached from the monitoring device(s) and your PC where you want to check the data. We will use MASH (see below) to deploy the services.

In the end this will enable you to get to something like this:

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23 October 2022 / Julian-Samuel Gebühr

Raspberry Pi as Offsite Backup

Use Case

You have one (or more) servers at a hosting provider and a raspberry pi at home. You want to have an offsite backup of the websites, apps and databases at home.

Prerequesits

You configure your raspberry pi to be reachable from the internet using DynDNS. In the following we assume that it is reachable at offsite.example.com.

Preparing your backup raspberry pi

We want to make sure that backups on the raspberry pi can come from multiple sources and one source can not delete another.

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01 January 2021 / Julian-Samuel Gebühr / English

Set up and secure an MQTT broker on Ubuntu

I had some IoT devices that I wanted to integrate in my monitoring. For this I set up a MQTT broker as the MQTT protocol is a simple solution to send data from IoT devices to a server. This tutorial is focusing on setting up the server, but I also introduce a Python based MQTT client to test our installation.

On your server, first install mosquitto, our MQTT server/broker.

sudo apt-get install mosquitto

Allow standard mqtt port in firewall (if you have ufw installed)

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23 July 2020 / Julian-Samuel Gebühr / english

Translation for video conferences

Although physical meetings are not possible, many groups and organizations are dependent on multilingual meetings. In videoconferencing, concepts such as a whispered translation are not intuitive. Therefore a friend and I have developed a concept for translation in videoconferencing. The concept was planned for a conference with 80 participants who will discuss and make decisions over two days either in large groups or in sub-groups. The videoconferencing software that was used was BigBlueButton (BBB).

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