Skip to content

Sebastien Wains

A markdown based wiki about Linux, Open Source, VoIP and other geeky stuff.

Since this is a static website, there is no comment function. Instead, you can open an issue or submit a merge request on Github if you have a comment or if something is incorrect or requires clarification.

This website doesn't use cookies.

Opinions expressed here represent my own and not those of my employer.

What I'm up to today

I'm a cloud and infrastructure senior consultant at Red Hat, the Open Source company.

I'm a Red Hat Certified Architect (RHCA). My certification ID is 110-643-822.

To learn more about our consulting services, check

What I have been up to in the past

For those who have been following me from the start, you've heard that I was really into Linux, Postfix, OpenVPN and Asterisk for some time, back when I was managing 5 Linux servers or so.

Then I changed jobs a couple of times and, and eventually managed more than 330 servers. In my last position before starting at Red Hat, I spent a lot of time automating, centralizing and orchestrating system administration and management with those tools:

Saltstack, Salt Cloud, Python, Git, Gitlab CE and tig, Mkdocs, Rundeck, Jenkins, Artifactory, Nexus, Postman, Red Hat Satellite, iTop, Graylog.

I talked about SaltStack at Jeudis du Libre conference. Check my Github for the decks.

At the personal level

I automate things at the personal level too! I'm a huge fan of Automagic on Android, Alfred on Mac, Ulauncher on Linux, and hackable connected devices.

My work environment

I work in a libvirt virtual machine running the latest Fedora with i3 tiling window manager. The host system is usually a Fedora latest.

I'm a die-hard shortcut keyboard user. I use a Ducky One 2 Mini mechanical keyboard.

Why a wiki?

Story time. I started this website in June 2005 (but bought the domain in March of the same year). The idea was to save notes about my findings so I could look them up later. I figured that I would share them online so it would probably help someone else down the line.

It all started as a self-hosted Wordpress blog as (changed to around September 2011). I had a lot of times on my hands and I was able to interact with my readers. On the busiest months I was getting 20000 visits a month. After a while, spam, bots and security issues became problematic, and the maintenance became a burden (files and database backup, PHP and security upgrades, dist-upgrades, etc.). I became kind of bored of maintaining or even publishing anything.

I needed something different. Something more automated and less cumbersome.

I wanted to publish things quickly, from anywhere in the world. I wanted to be able to write offline, and see my content pushed online almost automagically as I was getting a connection.

So here we are, July 2015, almost exactly 10 years later, the blog platform became a wiki platform. The (somewhat aging) content is still there and I hope you find useful stuff.

This site has gone through five major design revisions: 2005, 2008, 2011, 2015 and 2017

In 2015, it was running Wikitten.

In 2017 revision, I moved to Mkdocs as Wikitten didn't have a search engine and was not actively developed.

Why Markdown?

I write articles on my personal computer.

Markdown has some great advantages :

  • stored as plain text on disk
  • content is indexed making it easy to find content with Alfred/Spotlight/grep
  • you can grep, sed, awk the hell out of them and bring corrections very quickly
  • can be stored in a Git repository

This is my current publication workflow:

  • I edit articles locally with Visual Studio Code (yes, it is an open source Microsoft product, and it is very good)
  • I commit changes to my GitHub
  • With an Alfred workflow, I connect to my VPS and do:
    • a "git pull" to retrieve updates
    • rebuild the doc (which is served as static files by the HTTP server)
  • Article is online

About me

I like building simple, powerful, resilient, secure and automated infrastructures. Preferably based on open tools and protocols. Privacy and security are a concern.

When I'm not busy at the computer, I travel, hike, ski, camp out and take photos.

I'm an INTJ: INTJs are known as the "Systems Builders" of the types, perhaps in part because they possess the unusual trait of combining imagination and reliability. ~ Marina Margaret Heiss


If you want to contact me, just look me up.

Found an error on this site?

Open an issue on Github