0 comments on “Kubernetes (9): Installing ElasticSearch using Helm Charts”

Kubernetes (9): Installing ElasticSearch using Helm Charts

There may be simpler possibilities for installing ElasticSearch on Docker. However, here, we will choose a way that can be easily expanded for production use: the installation of ElasticSearch on Kubernetes via Helm charts. While installing ElasticSearch using Helm implements…

0 comments on “Kubernetes (8) – Automatic TLS Certificates signed by Let’s Encrypt”

Kubernetes (8) – Automatic TLS Certificates signed by Let’s Encrypt

In this tutorial, we will expose a kubernetes application via HTTPS with a valid Let's Encrypt certificate. A certificate manager will help us to automatically receive and provision a trusted TLS certificate. It is trusted since Let's Encrypt has signed the…

0 comments on “Kubernetes (7) – Ingress Controller on a multi-node Cluster (HTTP + HTTPS)”

Kubernetes (7) – Ingress Controller on a multi-node Cluster (HTTP + HTTPS)

You will find here step by step instructions on how to install an ingress controller on a Kubernetes multi-node cluster with an example application on both, HTTP and HTTPS. In our last blog post, we have installed a Kubernetes Ingress…

1 comment on “Kubernetes (6) – HTTPS Applications via Ingress Controller on Minikube”

Kubernetes (6) – HTTPS Applications via Ingress Controller on Minikube

In this blog post, we will show how to create Kubernetes HTTPS applications with a redirection from HTTP to HTTPS. For that, we will create a and mount a self-signed wildcard certificate to an NginX-based Kubernetes ingress controller. We will…

1 comment on “Kubernetes (5) Local Persistent Volumes – A Step-by-Step Tutorial”

Kubernetes (5) Local Persistent Volumes – A Step-by-Step Tutorial

Kubernetes local volumes go beta. However, what is it, a Kubernetes local volume? Last time, we have discovered, how to use Kubernetes hostPath volumes. However, we also have seen, that hostPath volumes work well only on single node clusters. Here,…

2 comments on “Kubernetes (3) – Installing a Kubernetes Cluster with kubeadm”

Kubernetes (3) – Installing a Kubernetes Cluster with kubeadm

In the blog post, we will learn how to create a kubernetes cluster with the help of kubeadm. We will deploy a Kubernetes master on a CentOS system before we will join a second CentOS system as Kubernetes Node. After describing…

0 comments on “Hello World Kubernetes Service on Minikube – Kubernetes Series (2)”

Hello World Kubernetes Service on Minikube – Kubernetes Series (2)

This is part 2 of a series on Kubernetes a la minikube. Minikube is (probably) the easiest way of installing a small Kubernetes system including a graphical user interface. In part 1 we have shown how to install such a system on…

0 comments on “WordPress Password Reset through Database Update or WP CLI”

WordPress Password Reset through Database Update or WP CLI

In this post, I have summarized how I have performed a password recovery of a WordPress installation. I have followed the instructions here. I have performed a WordPress password reset via database (Step 1 through 6) as well as a WordPress password…

0 comments on “How to Install OpenShift on Fedora – a Quick Installation Guide”

How to Install OpenShift on Fedora – a Quick Installation Guide

Are you reviewing Docker orchestration systems like Kubernetes, DC/OS or OpenShift? In this blog post, let us learn how to install a standalone OpenShift Origin system on Fedora. OpenShift Installation on Fedora is a tough nut. As an example, read this…

0 comments on “How to get rid of nested Subscriptions using RxJS flatMap and switchMap”

How to get rid of nested Subscriptions using RxJS flatMap and switchMap

"Nested subscriptions are bad programming style". That is, what many programmers tell us. But: how can we get rid of nested subscriptions? In this little step-by-step tutorial, we will demonstrate how to use flatMap to improve an Angular 6 based REST…

0 comments on “Decision-Making in Self-Management Organizations Using Systemic Consensus”

Decision-Making in Self-Management Organizations Using Systemic Consensus

Frederic Laloux writes in his amazing, world-changing, and ground-breaking book “Reinventing Organizations” that self-management works without consensus. “It is worth repeating that these decision-making processes work without consensus.” He continues that “for some reason, many people naturally assume that in…