Kubernetes – create a configuration backup with kubectl
This article intends to explain how to create a configuration backup of an helm installed application via kubectl. The best way to install an application in Kubernetes is helm. So …
Kubernetes Quickie: Extract the Ca-Bundle
Today I came across a new little problem: Configuring a MutatingWebhookConfiguration for Nginx ingress controller. The example looks like this: See that caBundle thing? The value needed here has to …
Migrating my cloud to Kubernetes – storage – the final decision SSHFS
Anyone following my quest to migrate to Kubernetes has been reading about the thoughts and problems encountered about dealing with a cost-effective and valid storage back-end. I ended up simply …
Migrating my cloud to Kubernetes – Part III about storage facilities
Since a while I am on a quest to move my legacy cloud to Kubernetes and posted about this already here, here and here. So far I can say that …
Kubeternetes CNI Flannel on dual-homed nodes
During my quest to move to Kubernetes I seem to run into one issue after the next. Since I was unable to get Calico to work at all due to …
How to share fuse file systems with NFS
As part of my mini-blog about migrating to Kubernetes I am currently setting up an NFS share to allow kubernetes hosts hosting pods on shared storage, so the pods can …
converting openSSL x509 into Kubernetes secrets
Serving an application in Kubernetes via https requires an openssl key and secret, so you can prove that the application can be trusted and the trafiic through the internet can …
Migrating my cloud to Kubernetes – Part II about storage facilities
A few days ago I had posted part 1 of my quest to move my cloud to Kubernetes. Now the next parts need to be done, namely choosing the right …
Migrating my cloud to Kubernetes – Part 1: storage facility
Earlier today I wrote an introduction to my new blog series about migrating to Kubernetes. This is the next installment, we’ll be talking about setting up a Kubernetes storage facility …
Migrating my private cloud to Kubernetes – Introduction
Are you interested in migrating to Kubernetes? Well, I am let me tell ya’ll about it. I have been around in IT since more than 25 years, in different areas, …
How to add an existing Paypal button to WordPress
So you run a WordPress website and want to add a simple button for donations without hassle. Like myself, I simply wanted to add a Button to allow readers to …
Puppet 8 Top level facts FQDN
In my last post I described how the top level facts have changed in format. Today I came across a similar problem, namely how to determine the Fully Qualified Domain …
Puppet 8 Top Level Facts Format has changed
I started working with Puppet 3, now version 8 is out and about . Well, Open Source Puppet that is. Over the time the way you use facts have significantly …
Rocky 9 install R10K service
How to install Puppet R10k service on Rocky 9 If you happen to manage your server infrastructure with Puppet, you will sooner or later stumble into R10k, which is rather …
Kubernetes: How to resolve external DNS within a pod
Sometimes we need to be able to resolve external ip addresses from within a pod. Let’s say you run something like WordPress, Nextcloud etc. within Kubernetes, and you want to …
Becoming a Puppet Certified Professional
Why getting certified Did you ever wonder about how to become a Puppet Certified Professional? Most IT professionals will have to get certified on one area or another. Mostly we …
Renewing Kubernetes cluster certificates via kubeadm can break your kubelet.conf.
Are you running a Kubernetes cluster to optimize your workload? Excellent idea. Running apps in containers rather than VMs or bare metal very often is quite helpful for your budget …
Managing PXE installations with Cobbler
Introduction Modern IT environments do require a high level of automation depending on complexity and business requirements. Manual installations and configurations take a long time, are prone to human failure …
Puppet Infrastructure Options
Running your Puppet infrastructure via Hiera or Foreman as ENC. Also learn about Configuration management.
Infrastructure as Code
What are main differences between traditional IT management and IaC?
Docker Swarm Review
Docker Swarm Overview
Docker Review
Like announced at the beginning of the new year, I am writing a series about managing Kubernetes with DevOPs methods. Having started with a little warm-up about Kubernetes and a …
Kubernetes – VM vs Bare Metal
Kubernetes in a Virtial Machine or on Bare Metal?
Kubernetes – What’s all the fuzz about it?
About Kubernetes in general
Hello again!
So I did not post anything in recent months for a number of reasons, as I was working mainly on setting up my own cloud infrastructure using my own custom …
VMware Workstation 12 CentOS 7 pxe kickstart fails with default settings
A solution for fixing CentOS 7 PXE/Kickstart installations when running in VMware workstation.
Importing Puppet modules to Foreman
Quick description about the steps required to import parameters from our Puppet modules into Foreman.
Hiera vs Foreman
Quick comparison about use cases for Hiera and Foreman
Deploying our Puppet modules
A general description about how to deploy Puppet modules written by the ConfDroid.
Foreman Installation — CentOS7
A quick run-through for a manual foreman installation. Takes roughly 15 minutes.