This article is about my experience with the YubiKey 4 for full disk encryption (FDE) with Linux. I will introduce the YubiKey and its capabilities of the entire disk encryption with Multi-Factor Authentication.

Since Elasticsearch 5, the default similarity algorithm for Elasticsearch is Okapi BM25. A similarity (scoring/ranking model) defines how matching documents are scored. Performing a search against a set of documents gives you results sorted by relevance. In one of our previous blog posts by Rocco Schulz, BM25 was already mentioned. In this blog article, we are going to look into the inner workings of the Okapi BM25 algorithm.

This blog post covers advanced DevOps practices. To get started with DevOps you may want to read the preceding blog post on Getting to DevOps: A Checklist.

This article is the beginning of our Elastic Stack article series, that explains the Elastic Stack for Beginners and curious people. I use football data as the basis for our demonstrations and examples for three reasons. The first reason is that the football (soccer) season starts again this weekend. I live in the city of the current Swiss Football champion (Bsc Young Boys). I want them to succeed again this season. The final reason is my little nephew. On my summer vacation visit, my nephew asked me what I do for a living in Switzerland: Software Engineering and Architecture for Distributed…

This article describes how to deploy pods (applications) on the desired node or nodes. OpenShift uses K8S (Kubernetes) to do that, so we will also cover the K8S basics about that.